Answer:
A
Explanation:
Tallness is dominant over shortness in pea plants. Which square would be homozygous for tallness?
A)
B)
C)
D)
Answer is A because combinding the genes A and A make a homozygous tall gene.
In fruit flies, long wings are dominant over short vestigial wings. Which punnet square would have 50% of the offspring have long wings and 50% of the offspring have short wings
A)
B)
C)
D)
Answer:D D
Explanation:
How is loess beneficial?
Answer: It grows healthy crops. It prevents wind erosion. It protects land from waves.
Explanation:
Answer:
The answer is A
Explanation:
it grows healthy crops
What are all of the genes making of an organism called
The transduction of sound waves into action potentials occurs ________.
A. when hair cells are bent against the tectorial membrane, causing them to depolarize and release neurotransmitter that stimulates sensory neurons.
B. as the basilar membrane vibrates at different frequencies in response to the varying volume of sounds.
C. within the tectorial membrane as it is stimulated by the hair cells.
D. within the middle ear as the vibrations are amplified by the malleus, incus, and stapes.
E. as the basilar membrane becomes more permeable to sodium ions and depolarizes, initiating an action potential in a sensory neuron.
Answer:
A. when hair cells are bent against the tectorial membrane, causing them to depolarize and release neurotransmitter that stimulates sensory neurons.
Explanation:
This is the mechanism of propagation and transmission of sound waves as action potential to from the ear to auditory centres in the brain. This mechanism takes place in the inner ear( organ of corti, supported by basilar membrane.There are group of receptors in the Endolymph, whicha are hair cells supported by the tectorial membrane,.The organ of Corti acts as transducers in the inner ear and converts the circular fluid motion to electrical signals as action potential, when the hair cells bends against the tectorial membrane as a results of vibration of the endolymph The causes depolarization, and therefore action potential.
The potential is transmitted to the auditory centres in the brain for sound perceptions.
Match the stages of the water cycle with the correct places in the model.
precipitation
infiltration
transpiration
groundwater
evaporation
condensation
Answer:
Explanation:
groundwater, evaporation condensation transpirtation infiltration precipitation
Answer:
The correct sequence of events is as follows:
evaporation
condensation
precipitation
runoff
infiltration
groundwater recharge
Explanation:
Correct on edmentum.
- Why would you expect children suffering from PEM to have difficulty maintaining a normal blood pH?
- why carbohydrates are the predominant type of food in the world's diets?
- c. What would be the contribution (percentage of total protein) of this meal towards the total amount of recommended protein for a person who weighs 55 kilograms?
- Galactose is converted to glucose in the liver. Why is there less of a concern about galactose than fructose in the diet?
- What is the Therapeutic Lifestyle Change (TLC) diet, and what recommendations are included?
1. PEM is a nutritional disease which means the people suffering from it consume too little protein or energy. When someone doesn't have the right amount of nutrients their body can't maintain homeostasis as well which would lead to unbalanced pH values.
2. Total calorie consumption should consist of 45-65% carbs to support cells and body function. Higher need for intake raises consumption levels in diets
3. Galactose is needed for your body while fructose raises cholesterol and fat accumulation around the organs. Essentially glucose are good sugars and fructose are bad sugars.
4. It's a heart healthy diet that can lower cholesterol and reduce chances of stroke. Typically it's recommended that you eat less fats and change the types of fat (saturated vs. unsaturated)
1.Children with Protein-Energy Malnutrition (PEM) may have difficulty maintaining normal blood pH due to imbalances in electrolytes and impaired metabolic functions.
2.Carbohydrates are predominant in diets due to their energy content and availability, being a primary energy source worldwide.
3.The contribution of protein in a meal for a 55 kg person depends on the meal's protein content, typically around 10-20% of total caloric intake.
4.Galactose is less concerning than fructose due to the limited presence of galactose in most diets and its efficient conversion in the liver.
5.The Therapeutic Lifestyle Change (TLC) diet aims to reduce cholesterol intake, increase fiber, and promote heart-healthy eating.
Difficulty Maintaining Normal Blood pH in Children with PEM:
Children suffering from Protein-Energy Malnutrition (PEM) may struggle to maintain normal blood pH due to several factors. PEM often results in a reduced intake of essential nutrients, including proteins. The body relies on proteins for various functions, including the regulation of acid-base balance.
Carbohydrates as the Predominant Food Type:
Carbohydrates are the predominant type of food in the world's diets for several reasons. They serve as a primary and efficient source of energy, readily available in various forms, including grains, vegetables, and fruits. Carbohydrates are a dietary staple for many cultures and are often less expensive and more accessible than other macronutrients.
Contribution of Protein in a Meal for a 55 kg Person:
The contribution of protein in a meal toward the total recommended protein intake for a 55 kg person varies depending on dietary needs and goals. A general guideline is to consume around 0.8 grams of protein per kilogram of body weight daily.
Concern about Galactose vs. Fructose:
There is less concern about galactose in the diet compared to fructose because galactose is less commonly found in dietary sources. Galactose primarily comes from the breakdown of lactose in milk and dairy products.
Therapeutic Lifestyle Change (TLC) Diet:
The Therapeutic Lifestyle Change (TLC) diet is a dietary plan designed to lower cholesterol levels and reduce the risk of heart disease. It includes recommendations such as reducing saturated fat and cholesterol intake, increasing soluble fiber consumption, and engaging in regular physical activity.
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What describes the physical expression of genes like having brown hair or having the ability to roll your tongue?
A: allele B: phenotype C: genotype
Consider the scenarios described below. Match the concept described by the scenario with the theory.
Five lizards were moved from Lost Island to Fantasy Island (which was devoid of this species of lizards). Within 35 years the lizards on Fantasy Island have larger heads and stronger bites then those on Lost Island, reflecting a diet higher in plant material then at Lost Island.
Geologists who study rock formations, water movements, and mountain formations use the phrase 'The present is the key to the past".
A group of rats is trained to correctly run a maze. The first rats would get the maze wrong 165 times before running it perfectly. After a few generations, the rats could run the maze only 20 times before learning it correctly.
An investigator considers fossils in the strata in the rocks throughout a continent. It is noted that a very large number of species disappeared from the fossil records about 65 million years ago. It is proposed that a large asteroid impact in the area lead to mass extinction.
The options are: gradualism, uniformitarianism, catastrophism, Scala Naturae, natural selection, inheritance of acquired characteristics
Answer:
1 - natural selection
2 - uniformitarianism
3- inheritance of acquired characteristics
4 - catastrophism
Explanation:
1. Natural selection refers to the evolution of organism or changes in the characterstics of organism depending on the environmental conditions. Hence, the lizard moved on fantasy island evolved with larger head and stronger bites as per the environmental condition.
2. The concept of Uniformitarianism states that the natural geological processes happening in present have already occured in past with same intesity and rate. Hence, geologist uses the phrase "The present is the key to the past" for formation of mountain, rock formation and water movements.
3. Inheritance of acquired characteristics are the characteristic acquird by the ancestors and transmitted that gradually acquired characteristic to their progeny. Hence, the rats acquire the charactieristics and transfered it to the next generations.
4. Catastrophism means the regular occurrence of meteorological and geological disturbances to explain the existence the fossil record. Hence, teh mass exticiton due to asteroid impact is an example of Catastrophism.
So, the correct options in sequential order is natural selection, uniformitarianism, inheritance of acquired characteristics, and catastrophism.
What gender is a hagfish?
Answer:They are sexually dimorphic — a mature female hagfish is typically 63 cm long (25 inches) and males are typically 48 cm (19 inches); females are heavier as well, 260 grams (nine ounces) and males are 180 grams (6 ounces).
Explanation:i got it from google so hope it helps!
Using terms and concepts that you have learned in this course, examine 10 aspects of your own diet, and explain any changes you may or may not make. For full credit, support each of your 10 choices with facts from the readings. (For example, currently, I rarely eat any nuts. So, I will start eating one ounce of nuts a day because it will improve my cholesterol level, which will reduce my risk for heart disease. Note: you may not use this example.) [30 points]
Explain how nutrients affect disease prevention and management. Make your answer specific with examples. Link the nutrient or nutrients you discuss to a condition.
Answer:
Increase awareness of what I eat
Explanation:
Eat more offal because it has CoQ 10. This is a powerful antioxidant and it will increase my energy and boost my immune system.Drink more green tea since it has theanine which is and amino-acid that will cross the blood brain barrier. This will increase my alertness and give me a sense of well-being.Eat more berries it has a wide range of differing antioxidants. It's important for scavenging reactive oxygen species in the body that could damage the cells.Drink more water flush toxins out. This will also keep me hydrated and keep the blood body levels normal. Eat more green leafy vegetables because it has iron, important for making haemoglobin.Eat more nuts it has magnesium and potassium which are important for over 300 enzymatic reactions in the body and also critical for mood, alertness, sleep and pain management.Eat more fish it has iodine which is a trace component but will support thyroid health and improve immunity.Switch to pink salt get trace minerals that are not always available in iodized salts. These are important for the conduction of electrical impulses in the brain and increase reaction response and shorten reaction time.Eat two hours before bed to reduce indigestion, this will also decrease weight gain as the food is moved along the digestive system long before it is time to go to sleep.Cut out refined carbohydrates to reduce empty calories and incorporate whole grain and natural sweeteners, if any. This provides a more nutrient dense diet and also provide plenty of fiber to aid digestion and bowel movements. It also provide food for the good gut bacteria that helps to improve our immune system.This answer examines ten different aspects of diet, including cereal and protein consumption, fruit and vegetable intake, and hydration, among others. The importance of each aspect and potential changes are discussed in light of their impact on overall health.
Explanation:The question relates to understanding how the food you consume directly impacts your health from a preventive and management perspective. Nutrients play a critical role in both disease prevention and management.
Here are ten different aspects of my own diet and potential changes:
Cereal consumption: I frequently consume cereal high in sugar. However, long term consumption of sugar can lead to obesity and type-2 diabetes. I'll decide to replace high-sugar cereal with low-sugar, whole grain options which provides more fibre. Fruit intake: My current fruit intake is low. Regular consumption of fruits lowers the risk of heart disease and stroke. I'll aim to have at least 2 servings of fruits daily. Vegetable intake: Vegetables are essential for good health because they are low in calories and high in vitamins, minerals and fiber. I'll try to incorporate more vegetables in my meals. Fatty food consumption: Excessive intake of fats can lead to obesity and heart disease. I'll replace unhealthy fats with healthier ones found in foods like avocados and fish. Protein intake: Proteins are critical for tissue repair and immune function. I'll ensure I get an adequate amount from lean meats, dairy, and plant sources. Hydration: Drinking plenty of water helps maintain body temperature and aids digestion. I'll aim to drink at least 8 glasses of water daily. Salt intake: Consuming excessive amounts of salt can lead to hypertension. I'll aim to reduce my salt intake by preferentially seasoning my food with herbs and spices. Portion control: Overeating, regardless of the nutritional quality of the food, leads to weight gain. I'll practice portion control to keep my calorie intake in check. Dairy intake: Dairy is rich in calcium, which is essential for bone health. I'll include adequate dairy in my diet to meet my calcium requirements. Alcohol consumption: Alcohol, while not a nutrient, can have significant effects on health. Moderate alcohol use may have heart benefits, but heavy use is harmful. Learn more about Nutrients and Health here:
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g Consider a series of metabolic events during fasting. Within a few days after a fast begins, nitrogen excretion accelerates to a higher‑than‑normal level. After a few weeks, the rate of nitrogen excretion falls to a lower level and continues at this low rate. However, after the fat stores have been depleted, nitrogen excretion rises to a high level. Identify the process that triggers the initial surge of nitrogen excretion. depletion of glycogen stores liver damage nucleic acid breakdown depletion of fatty acid stores Identify the process responsible for the fall in nitrogen excretion after several weeks of fasting. fatty acid breakdown protein synthesis nucleic acid synthesis glycogen breakdown Identify the process responsible for the increase in nitrogen excretion when the lipid stores have been depleted. nucleic acid breakdown protein breakdown glucosamine breakdown glycogen breakdown
Answer:
. Identify the process that triggers the initial surge of nitrogen excretion,
The reason for this is because of the gluconeogenesis ,(in the liver and cortex of the kidney) which make up for the reduction in glucose blood level, from rapid catabolism to glucose at the beginning of fasting, by breaking down protein to glucose in the liver. Therefore excess Nitrogen is produced as the byproducts of amino acids catabolism.
Physiologically the mammalian brain prefers the keto bodies supply from fatty acids catabolism from gluconeogenesis compare to protein. These water solube subtances cross the BBB to reach the brain the CNS substituting for glucose. Thus as more fatty acids is converted to ketobodies at faster rate, the brain gets adapted to this, and therefore catabolism of amino acids drops, hence Nitrogen concentration in the blood drops.
However, with exhaustion of Glycogen and fatty acid, catabolims of amino acids resumes. therefore, more amino acids are broken down, and Nitrogen build up in the Urine for excretion.
Explanation:
Please provide a legitimate answer and provide an explanation for the question below.
Why would imbalanced hormone levels make it difficult for a woman to become pregnant?
Answer:
Prolactin is the hormone that controls the production of breast milk. Prolactin is also responsible for triggering the hormones to begin ovulation and allow the eggs to grow and mature properly. If your Prolactin levels are out of whack, it can be difficult for you to become pregnant.
Explanation:
All cells come from ___ cells through the process cell division
Answer:
Other cells or the mother cell
Explanation:
Answer:
preexisting cells
Explanation:
Select ALL the correct answers. Which statements are true regarding an energy pyramid? The number of producers is greater than the number of primary consumers. The amount of energy at the primary consumer level is greater than the amount of energy at the secondary consumer level. The number of primary consumers is less than the number of secondary consumers. The amount of energy at the producer level is less than the amount of energy at the primary consumer level.
Answer:a b no sentido contrariod e bcon h n sjpor l 4 1a i
Explanation:
Answer:
The number of producers is greater than the number of primary consumers.
The amount of energy at the primary consumer level is greater than the amount of energy at the secondary consumer level.
Explanation:
g Feedback inhibition is important for the regulation of many metabolic pathways. Which of the statements are examples of feedback inhibition? The beginning of glycolysis is inhibited by high levels of ATP in the cell. The lac operon is not transcribed when there is no lactose present. An intermediate of glycolysis activates an enzyme downstream in the pathway. Arsenic binds to pyruvate dehydrogenase and inhibits the enzyme. The production of isoleucine is halted by the presence of excess isoleucine.
Answer:
-The beginning of glycolysis is inhibited by high levels of ATP in the cell.
-The production of tryptophan is halted by the presence of excess tryptophan.
Explanation:
Feedback inhibition is a regulatory mechanism in cells where the end product of a metabolic pathway inhibits an upstream process. Examples include the inhibition of glycolysis by high levels of ATP, lac operon transcription in the absence of lactose, and the production of isoleucine in the presence of excess isoleucine.
Explanation:Feedback inhibition is a regulatory mechanism in cells where the end product of a metabolic pathway inhibits an upstream process. Examples of feedback inhibition include:
The beginning of glycolysis is inhibited by high levels of ATP in the cell.The lac operon is not transcribed when there is no lactose present.The production of isoleucine is halted by the presence of excess isoleucine.These examples demonstrate how the cell regulates metabolic pathways to maintain balance and prevent unnecessary production.
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Question 14 of 20 A mutation in human ATPase 6, which corresponds to E. coli subunit a, from leucine to arginine at position 156 may allow the movement of protons across the membrane, but not the rotation of the ring of c subunits. How might this possible mechanism affect the function of ATP synthase? Choose two answers. There would be no net effect on the overall function of ATP synthase. There would be an uncoupling of proton translocation and ATP synthesis. The c ring would become uncoupled from the γ and ε subunits. ATP hydrolysis coupled to proton transport out of the matrix would increase. Proton binding to subunit c would be impaired. ATP synthase would remain sensitive to F0 proton conduction inhibitors.
The answers are the following:
1- There would be an uncoupling of proton translocation and ATP synthesis.
2- ATP synthase would remain sensitive to F0 proton conduction inhibitors.
Multiple choice questions
1. Which of the following are pentadactyl limbs
I Bee front leg
II Bird wing
III Dolphin flipper
A ll only
B 1 and II only
Cland Ill only
Dll and Ill only
Answer:
D
Explanation:
Answer:
It is D
Explanation:
Cystic fibrosis is an autosomal recessive disease where mucus develops in the lungs, liver and the pancreas. Which Punnet Square would have 25% of the offspring be homozygous dominant?
A)
B)
C)
D)
Answer:
A
Explanation:
B and D are incorrect because 0% of the offspring would be homozygous dominant
C is incorrect because 50% of the offspring would be homozygous dominant
that leaves A as the only correct answer which makes sense because only the first square is AA which is 25% of the whole
Please provide a legitimate answer and provide an explanation for the question below.
Patients with thyroid cancer often have their thyroid removed. After this surgery, they take hormone pills for the rest of their lives. Explain why these pills would be necessary.
Answer:
If they have their thyroid removed, they will have nothing in their body to regulate the thyroid hormones, therefore they will need pills to regulate the levels of hormones in the bloodstream
What is two-point discrimination? Choose the correct option. A. The average distance between two points that can be differentiated by the somatic sensory system B. The distance between two points that cannot be differentiated by the somatic sensory system C. The greatest distance between two points that can be differentiated by the somatic sensory system D. The smallest distance between two points that can be differentiated by the somatic sensory sy
Answer: D. The smallest distance between two points that can be differentiated by the somatic sensory sy
Explanation:
the discrimination of two points is a test that assesses the possibility of distinguishing the contact of two separate points that are applied at the same time on the skin, the purpose is to define the minimum distance of separation with which the person can differentiate the separated stimuli
Answer:
The correct option is D:
"The smallest distance between two points that can be differentiated by the somatic sensory system"
Explanation:
The two-point discrimination is defined as the ability to tell the difference between two closely placed distinct points that are touching the skin. Usually very sharp points are used to test this during a neurological exam. It is done to check how many nerves are concentrated in that particular area of skin. The minimum distance at which you can recognize two points as two and not one differs for different parts of the body. For example, the finger tips are more sensitive in this regard than the palm of the hand.
Hope that answers the question, have a great day!
Genetics Problems (ABO Blood System) The chart below lists the blood phenotypes of 8 individuals. Use the information in the chart to solve the genetics problems that follow. Females Blood Type Males Blood Type Anne Type O Charlie Type A Wendy Type B Scott Type AB Susan Type AB Larry Type O Patricia Type A Keith Type B 1. Larry has a son with type B blood. Which of the females listed above could be this child's biological mother? 2. Anne is pregnant with Scott's child. What is the chance that the baby will have type A blood? 3. Because her daughter has type B blood, Patricia insists that Keith is the father. Keith claims that Scott is the father of Patricia's baby girl. Is it possible that Scott is the baby's father? 4. Keith and Wendy have a 4-year old with type O blood. How is this possible? 5. Susan is the mother of Charlie's first two children. The oldest, Dawn, has type AB blood while her sister, Kate, has type B blood. Charlie is now expecting a baby with Anne. What is the chance that this child will have type O blood? 6. Erin, Patricia and Larry's daughter, is married to Jeff. Jeff was in a serious car accident and needs a transfusion but Erin is told that Jeff cannot be given her blood. Based on this information, provide Erin's blood genotype and blood phenotype. 7. Scott and Susan's son, Paul, is willing to donate blood to a young girl with leukemia. If the recipient has type O blood, will Paul be able to donate to her?
Answer:
Explanation:
Female blood type Male blood type
Anne Type O Charlie Type A
Wendy Type B Scott Type AB
Susan Type AB Larry Type O
Patricia Type A Keith Type B
1. Larry has a son with type B blood. Which of the females listed above could be this child's biological mother?
For Larry that is of type O to produce a son with type B blood, his mother has to be either of type B or AB. Which is either Wendy or Susan
2. Anne is pregnant with Scott's child. What is the chance that the baby will have type A blood?
Since Scott possess the AB codominant type and Anne's type has to be inherited in the recessive form, the chances of producing type A is 50% and B is 50%. Thus, the chance that the baby will be of type A blood is 50%.
3. Because her daughter has type B blood, Patricia insists that Keith is the father. Keith claims that Scott is the father of Patricia's baby girl. Is it possible that Scott is the baby's father?
Since Scott that is of type AB is the father of a type B child, the mother Patricia that is of A type has to have a genotype that is AO for it to be possible that Scott is the father.
4. Keith and Wendy have a 4-year old with type O blood. How is this possible?
Keith is of type B blood and Wendy is also of type B blood. It is possible to have a 4-year old with type O blood if if both parents are of the BO genotype.
5. Susan is the mother of Charlie's first two children. The oldest, Dawn, has type AB blood while her sister, Kate, has type B blood. Charlie is now expecting a baby with Anne. What is the chance that this child will have type O blood?
Charlie and Susan can only produce Kate of type B blood if they are AO and AB respectively. Thus, since Charlie's genotype is AO, there is a 50% chance that he can produce a child of type O blood with Anne who is of type O blood.
6. Erin, Patricia and Larry's daughter, is married to Jeff. Jeff was in a serious car accident and needs a transfusion but Erin is told that Jeff cannot be given her blood. Based on this information, provide Erin's blood genotype and blood phenotype.
For Erin to be unable to give her blood to Jeff, it means Jeff is of O blood type and Erin is not, meaning she can either be A+, B+ or AB. But since her mother is of type A and father is of O, this rules out AB and also B. Her genotype can't be AA since her dad is of type O blood. Thus, it can be claimed that she is of genotype AO of type A blood type.
7. Scott and Susan's son, Paul, is willing to donate blood to a young girl with leukemia. If the recipient has type O blood, will Paul be able to donate to her?
Since the recipient has type O blood, she can only receive from a type O patient. Paul cannot be a donor because both parents are of AB blood type meaning Scott is either of type A, B or AB. Thus, he will not be able to donate as he is not of O type.
b
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Name two different units that might be used to measure volume?
Answer:
easy
Explanation:
millilitres and liters
I guess
hope it helps
The cubic meter and the liter are two different units that might be used to measure volume. The cubic meter is the standard unit in the International System of Units, while the liter is a unit commonly used in daily life.
Explanation:Two different units that might be used to measure volume include the cubic meter (m³) and the liter (L). The cubic meter is the standard unit of volume in the International System of Units (SI).
A cubic meter represents the volume of a cube with sides that are 1 meter in length. On the other hand, the liter is a commonly used unit of volume in daily life. One liter is the same as one cubic decimeter (dm³).
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A biologist exposes mice to mutagenizing X rays to generate an array of different mutants. He hopes to generate a mutant form of acetylcholinesterase that will be functional at normal body temperature but inactive at a higher temperature. Which step below would work as an initial screening step in the biologist's quest to eventually identify a mutant of this type?
Look for mice with normal muscle contraction–relaxation activity at normal body temperature that develop continuous muscle contraction during an induced fever.
Look for mice that develop hyperactivity and rapid muscle movements as their body temperature changes from normal to the higher temperature of an induced fever.
Look for mice with a normal response to loud noise that become more easily startled by the same noise stimulus as their body temperature rises during an induced fever.
Look for mice with normal muscle contraction–relaxation activity at normal body temperature that develop an inability to contract muscles during an induced fever.
Answer:
The correct option is B:
"Look for mice that develop hyperactivity and rapid muscle movements as their body temperature changes from normal to the higher temperature of an induced fever."
Explanation:
The enzyme acetylcholinesterase is responsible for the breakdown of acetylcholine which is a neurotransmitter. Once the enzyme is inactivated at a higher temperature, it will cause acetylcholine to build up in the synapse. This will lead to a continued stimulation of its target receptors that can result in seizures, and hence, this will be the case with the mice who have the mutant form of acetylcholinesterase enzyme.
Hope that answers the question, have a great day!
The step that will be required to identify the mutant will be A. Look for mice with normal muscle contraction–relaxation activity at normal body temperature that develop continuous muscle contraction during an induced fever.
In biology, it should be noted that a mutant simply means an organism that arises as a result of mutation. It's an alteration of the DNA sequence.
Based on the information given, to identify the mutant, it's important to look for mice with normal muscle contraction–relaxation activity at normal body temperature that develop continuous muscle contraction during induced fever.
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pls help biology
it seem hard to me
Answer:
there are more particles at the surface than deeper depths
Explanation:
Ecosystem diversity, species diversity, and genetic diversity all intertwine to create _____________.
Biodiversity
Explanation:
Ecosystem diversity, species diversity, and genetic diversity all intertwine to create Biodiversity.
Hope this helps! :D
Answer:
biodiversity.
Explanation:
Which best explains how the body maintains homeostasis
Answer:
A . All systems work together to stabilize the body.
Explanation:
correct on edg .
A newspaper headline reads "Large Drainage of the Everglades Planned" . What would be the negative impact of this plan on South Florida?
A. new land for agriculture
B. rationing of the water supply
C. elimination of pests such as mosquitoes
D. more room for development of real estate
Answer:
Option A, new land for agriculture
Explanation:
Everglades system was carved by nature to hold water. It lies at the conflux point of two large drainage ridge a) western inland ridge and b) Eastern coastal ridge and hence comprises of a broad shallow valley sloping. The purpose of draining Everglades in Florida was to empty a swampland covering a huge area of 4,000 square miles by digging canals in order to create farmland. The water for this farmland can be drawn by the plantation or it will be extracted and allowed to flow into the ocean.
Hence, option A is correct
Terry is teaching his class about atoll reefs. Which of these points should Terry mention in his explanation?
1) that atoll reefs are the oldest
2) that atoll reefs border the shorelines
3) that atoll reefs generally have a lagoon between the shoreline and the reefs
4) that atoll reefs are the youngest
The correct answer is option (c). Terry mention in his explanation that atoll reefs generally have a lagoon between the shoreline and the reefs.
To explain this, let's go through each option:
1) that atoll reefs are the oldest:
This statement is incorrect. Atoll reefs are actually the youngest type of reef in the sequence of reef development. They form after a fringing reef has developed around a volcanic island, and as the island subsides or erodes away, the reef continues to grow upward towards the surface, forming an atoll. The correct sequence, from oldest to youngest, is fringing reefs, barrier reefs, and then atoll reefs.2) that atoll reefs border the shorelines:
This statement is not entirely accurate. Atoll reefs do not typically border the shorelines of continents or large landmasses. Instead, they form a ring-like structure around a central lagoon, and there may be small islands on the reef. They are often found in the open ocean, far from any large landmass.3) that atoll reefs generally have a lagoon between the shoreline and the reefs:
This statement is correct. Atoll reefs are characterized by their unique structure where a lagoon is enclosed by the reef. The lagoon can be shallow or deep, and it is this lagoon that distinguishes atolls from other types of coral reefs.4) that atoll reefs are the youngest:
As mentioned earlier, this statement is correct. Atoll reefs represent the final stage in the typical life cycle of a coral atoll. They form after millions of years, as a volcanic island subsides and the coral reefs that initially formed around the island continue to grow and thrive, eventually forming a circular or oval-shaped reef system with a central lagoon.
List the structures of a sperm. (Module 26.3C) List the structures of a sperm. (Module 26.3C) acrosome, head, cilia, and flagella acrosome, head, neck, middle piece, and tail nucleus, lysosomes, peroxisomes, and Golgi apparatus acrosome, spermatid, and spermiogenic head head, neck, and tail
Answer:
I think your question is poorly worded, just like all the parts are: a head and its flagellum, but within them we can distinguish several structures, which, in cephalad-caudal order (from head to tail, that is, from top down), son: acrosome, nucleus, membrane, neck, middle piece, tail and end piece.
Explanation:
Sperm are zygote cells that have half the genetic load, which is why when they join the ovum in fertilization, they form the complete genetics of the human.
In turn, the sperm has very efficient mechanisms for obtaining rapid energy, since they consume many ATP molecules when inoculating the ovum during fertilization.
They are formed by with the help of the sertoli cell, which sets the physiological state so that in the human testicle they are formed releasing in the male semen.
Answer:
head,acrosome, neck, middle piece, and tail
Explanation:
The sperm cells are sex cells that are produced in the testicular organ (gonad) of male human beings and animals.
The basic structure of the sperm includes;
1) The Sperm Head
A normal sperm head is smooth and oval shape, and measures 2.5 to 3.5 um in diameter and 4.0 to 5.5 um in length.
The head is the most important part of the cell given that it contains the nucleus which takes about 65% of the head and consist of the 23 chromosomes. Other materials too like the acrosomal region is found in the head which comprises of the acrosome and the acrosomal cap ( the acrosome is involved in the recognition of the oocyte (egg) to be fertilized).
2) The centriole is part of the sperm cell located between the head and the midpiece (the neck). In a centriole-centrosome complex, the centriole is involved in the formation of sperm aster and zygote aster.
3) Middle piece
The midpiece is the central part of the sperm cell between the head and the tail. They contain tightly packed mitochondria that provide the energy requires for swimming of the sperm towards the oocytes.
4)Tail
The sperm tail is a thin, elongated structure that makes up about 80 percent of the entire length of the sperm. It consists of several parts;
a) Connecting piece – it connects the flagellum to the sperm head
b) Midpiece - In some books, the midpiece is described as part of the tail. It contains mitochondria and thus provided the energy required for movement as explained above
c) Principal piece (axial filament) and
d) End piece
principal piece and the end piece of the tail help generate the waveform that allows for movement of the sperm cells.