Answer:
The correct answers are:
- May have evolved from prokaryotes
- Have membrane-bound organelles
- Have a true nucleus
Explanation:
- They aren't always multi-cellular although most are.
- Only on occasion are unicellular
- Many scientists hypothesize that eukaryotic cells evolved from prokaryotes
- Eukaryotes have a true nucleus, membrane-bound organelles, and complex internal structures.
- and are not more primitive than prokaryotes, Pros have been around for 4 billion years while Euks have only been around for 1 billion
Hope this helped you!
Final answer:
Eukaryotes are characterized by having a true nucleus and membrane-bound organelles, and they can be both single-celled and multicellular. They may have evolved from prokaryotes and show a complex cellular organization.
Explanation:
Eukaryotes are a diverse group of organisms that have a true nucleus and membrane-bound organelles. They can be either single-celled or multicellular in their body composition, which includes plants, animals, fungi, and protists. The presence of a membrane surrounding their DNA is one of the key features distinguishing them from prokaryotes. There is a consensus among scientists that eukaryotes may have evolved from prokaryotes, likely through endosymbiotic events; however, they are not considered more primitive than prokaryotes, as each group is adapted to its own ecological niches.
How many atoms of each element does sodium carbonate, Na2CO3, contain? Sodium = 1 atom, Carbon = 2 atoms, Oxygen = 3 atoms Sodium = 1 atom, Carbon = 1 atoms, Oxygen = 3 atoms Sodium = 2 atoms, Carbon = 1 atom, Oxygen = 3 atoms Sodium = 2 atoms, Carbon = 3 atom, Oxygen = 3 atoms
Answer:
2 sodium
1 carbon
3 oxygen
Explanation:
Na2 = 2 Sodium
C = 1 carbon
O3 = 3 oxygens
A mother brings her 2-year-old child to the clinic because of her concerns about the child's nutritional status. for the last week, he has refused to eat anything except animal crackers and peanut butter and jelly sandwiches. which measure would be most appropriate for the nurse to suggest?
Answer:
The nurse should suggest that the child's mother not offer food from the main meals, so that the child is hungry, and the mother should eat small portions of food.
Explanation:
One of the things that worries parents the most is the lack of appetite of their children. After carefully and lovingly preparing food, it is difficult to understand why they refuse to eat and prefer to eat things that are not nutritious enough. Many parents go through this and end up seeking medical help to deal with this problem.
In such cases, what a nurse may suggest is that parents should avoid giving drinks and other types of food during meals, as they reduce appetite and should not overfill the child's plate. Ideally serve smaller portions and wait for the child to want to repeat.
The nurse should recommend engaging the child in meal planning and prep, providing nutrient-dense foods, and creating a pleasant mealtime atmosphere to encourage healthier eating habits.
For a child refusing to eat anything but animal crackers and peanut butter and jelly sandwiches, the nurse should suggest a balanced approach to nutrition that encourages parental involvement in meal planning and includes the child's participation in food preparation. To address a 2-year-old's particular eating habits, it would be most appropriate to:
Involve the child in meal planning and preparation, making the experience educational and enjoyable.Provide nutrient-dense foods at mealtime and snack-time and limit high-calorie, low-nutrition options.Maintain a pleasant mealtime atmosphere, avoiding stress and pressure, to foster a better eating experience.Keeping mealtimes positive and engaging while providing balanced, nutritious options can encourage children to diversify their diets without imposing undue stress or negative associations with food.
1. If the number of pythons increases then the death rate of marsh rabbits will (Choose 1: increase/decrease)_________________ .
2. If the number of pythons increases then the death rate of marsh rabbits will (Choose 1: increase/decrease)_________________ .
3. If the number of marsh rabbits increased, what would happen to the population size of the pythons? Why?
a. The population size of the pythons would decrease because the marsh rabbits would drastically out number them.
b. The population size of the pythons would decrease because the marsh rabbits would take occupy the habitat normally used by pythons.
c. The population size of the pythons would increase because pythons require the same breeding conditions as marsh rabbits.
d. The population size of the pythons would increase because there would be more food (in the form of marsh rabbits) available.
1. If the Number of Pythons increases then the Death Rate of Marsh Rabbits will Increase. Because More Pythons will need More Food to Survive. So, they need to kill many Rabbits in their Habitat. Hence, The Death Rate of Rabbits Increases.
2. You repeated the Same Question
3. If the Number of Marsh Rabbits increased, The Population Size of Pythons would increase because there would be More Food (in the Form of Marsh Rabbits) Available.
I think Option D
Answer: 1. Increase 2. Decrease 3. D) The population size of the pythons would increase because there would be more food (in the form of marsh rabbits) available.
Explanation:
1. (2 points) If the number of pythons increases then the death rate of marsh rabbits will (Choose 1: increase/decrease) ANSWER>>>> Increase
2. (2 points) If the number of pythons increases, then the population size of marsh rabbits will (Choose 1: increase/decrease) ANSWER>>>>>>Decrease
3. (2 points) If the number of marsh rabbits increased, what would happen to the population size of the pythons? Why?
a. The population size of the pythons would decrease because the marsh rabbits would drastically out number them.
b. The population size of the pythons would decrease because the marsh rabbits would take occupy the habitat normally used by pythons.
c. The population size of the pythons would increase because pythons require the same breeding conditions as marsh rabbits.
d. The population size of the pythons would increase because there would be more food (in the form of marsh rabbits) available.<<<<<<< ANSWER
HOPE THIS HELPS, JUST DID THE LESSON AND GOT EVERYTHING CORRECT!!!!!!!! :)
Mark argues that proteins within the body have two functions structure and transport Sarah disagrees which significant function of proteins did mark omit from his list
While Mark identified structural support and transport as protein functions, he omitted roles in enzymatic reactions, immunity, hormonal regulation, and growth and repair. Proteins also act as metabolic fuels and have diverse structures critical to their functions, with alterations potentially leading to disorders like sickle cell anemia.
Explanation:Mark mentioned structure and transport as functions of proteins, but he omitted several other significant functions. Proteins are indeed crucial for structural support and transport, but they also have pivotal roles in enzymatic activities, immune responses as antibodies, hormonal functions, and serving as receptors and channels in cell membranes. Moreover, they are involved in cell signaling, muscle contraction, and other regulatory mechanisms within the body. Proteins such as hemoglobin are vital for oxygen transport, and enzymes catalyze biochemical reactions which are essential for metabolism. Proteins also contribute to growth and repair of tissues and can act as a metabolic fuel source when needed.
Of importance, the structure of proteins, determined by the sequence of amino acids and their three-dimensional folding, is critical for their diverse functions. A change in even a single amino acid can have significant consequences on protein functionality, as seen in the genetic disorder sickle cell anemia, where an altered hemoglobin structure leads to improper oxygen transport and other complications.
What life style events can affect your biology?
Hi,
There is a relatively new branch of genetics that is called epigenetics, which provides information that how can environmental factors or life style changes can affect the expression of genes without causing changes in the nucleotide sequences of the genes.
You can think about epigenetics as *Tags* which can switch genes on and off just like when we turn a lamp on it produces light and when we turn it off light donot shines.
So, how our life events affect our biology are through several ways.Dr. Rudolph Tanzi is a professor at Harvard university who showed that factors like diet, sleep, behavior and other environmental circumstances can affect our biology by triggering specific genes on and off.
For example: the studies showed that only one week of insufficient sleep can alter the activity of almost 700 genes by triggering different processes like stress, anxiety, mood swings etc.
Similarly, if we have a life style where we feel positive about everything, feel gratitude about blessings then it has shown to positively regulate the activity of genes by causing mind freshness and calmness and more stability of moods.
Similarly, diet can also affect our biology in several ways. For example: a diet that is excessively rich in carbohydrates can attack our genes and cause disbalance in blood glucose levels. While a diet rich in sulforaphane, resveratrol and epigallocatechin gallate (green tea) can reverse the damage to DNA and promote a good health.
Hope it help!
what is the effect of sickle cell anemia
Answer:
Sickle Cell Anemia:It is a type of disorder which occurs inside the red blood cells or RBC's of the blood medium. And is mainly caused by the deficiency in the oxygen molecules inside the blood medium leading the nerves and the cells to have lack of oxygen.
As, the target cells become more sickle in shape and they are unable to carry on the transportation of the oxygen,O₂ molecules through the given path way or arteries inside the circulatory system present in the body.
Target Cells in the Body and Cause:It is mainly caused by the deficiency in the level of oxygen,O₂ molecules inside the blood medium, as its not because of the lack of oxygen present in the air but due to receiving an abnormal gene by the person leads to abnormality in the structure or shape of the hemoglobin over all. Making the RBC's unable to carry enough oxygen to all the cells.
Diseases or disorders caused by the sickle anemia:Due, to lack of oxygen in the blood medium causes the cells to die and remain under nourished.Damage to the nerves and the arteries is caused leading to some of the heart diseases and the liver disorders.Some body parts may stop working due to less supply of oxygen to them.Most of the patient's body become pale and less developed both physically and mentally.Answer:
What are some of the results of having sickle-cell anemia
blood clotting
resistance to malaria
Explanation:
Which TWO descriptions are examples of mechanical energy?
1. a bird flying in the air
2.a tiger ready to pounce on its prey
3.a child chewing food
4.a girl sitting on a motionless swing
5.a log of wood on a riverbank
The correct answers are:
a tiger ready to pounce on it's prey
A child chewing food
Please Help!!!!
A man who is color-blind marries a woman who is not color-blind and is not a carrier of the allele for color blindness. Create a Punnett square to predict the possible genotypes of their children.
Answer:
The punnet square
Explanation:
In order to create a punnet square you have to name the or put a representation to the genes, les say it would be C and N, C for colorblind and N for normal:
Father Mother
N N
C CN CN
N NN NN
So that would be the punnet square, remember that sex comes into consideration because women can´t be colorblind nor carriers of the gene.
Which of the following statements concerning differences in cultural coping strategies in response to stress is true? Please select the best answer from the choices provided
A Individuals in collectivistic cultures will sometimes refrain from expressing stress if there is a possibility of disrupting group harmony.
B Individuals in collectivistic cultures tend to focus on taking action to solve the problem causing the stressor.
C Individuals in individualistic cultures are often more inclined to avoid stressful situations than individuals in collectivistic cultures.
D Individuals in individualistic cultures are more prone to using social support as a way of coping with stress than those in collectivistic cultures.
The given question is : Which of the following statements concerning differences in cultural coping strategies in response to stress is true?
Answer: Option A is true.
A: Individuals in collectivist cultures will sometimes refrain from expressing stress if there is a possibility of disrupting group harmony.
Answer:
A. Individuals in collectivistic cultures will sometimes refrain from expressing stress if there is a possibility of disrupting group harmony.
Explanation:
Stress can become a major problem in anyone's life. In stressful moments, it is normal for the individual to establish coping strategies so that he can have peace of mind and be able to resist his problems.
Coping strategies are different in individualist and collectivist cultures. This is because, often, coping strategies involve more people than the individual who is facing stress.
In individualistic cultures, as the individual is taught to seek his own interests, coping strategies can involve a community without the individual being concerned with the harm that that community will have. However, sometimes individuals in collectivist cultures avoid expressing stress if there is a possibility of disturbing the harmony of the group.
what is the purpose of adding foreign DNA to a bacterial cell called?
a)transformation
b)biotechnology
c)genetic testing
d)nondisjunction
The answer is A. Transformation.
Answer:
a) transformation
Explanation:
The recombinant DNA molecule produced is introduced into a host organism (such as a bacteria) and can then be replicated. This process is known as transformation, in which bacterial cells capture DNA from the external environment.
Host cells copy the vector DNA along with the DNA itself, creating multiple copies of the inserted DNA. Some examples of host cells are the bacteria Escherichia coli and Bacillus subtilis and the yeast Saccharomyces cerevisiae.
A chloroplast is an organelle inside of cells. True or False
The answer would be, True, A chloroplast is an organelle inside of cells.
True
A chloroplast is an organelle with in the cells of plants and certain algae that is the site of photosynthesis , which is the process by which energy from the sun is converted in to chemical energy for growth . they are double -membrane organelle with the presence of outer , inner and inter membrane space . There are two distinct regions present inside a chloroplast known as the grana and stroma.
learn more about A chloroplast is an organelle inside of cells https://www.bing.com/ck/a?!&&p=abea0a7387222faeea76317b5f0426ededca9d088b3ddcb5d604fcc9945a3fbfJmltdHM9MTY1NDgzNDYwNiZpZ3VpZD0wMzk4NzNhZS04YmVjLTQ1MGMtYmY5NC1kMTU0YTlhY2E2NTkmaW5zaWQ9NTE2MQ&ptn=3&fclid=23f9ddf2-e874-11ec-ba34-9910d3a76fe8&u=a1aHR0cHM6Ly9icmFpbmx5LmNvbS9xdWVzdGlvbi8xMTc1MDc2Mw&ntb=1
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30 POINTS + BRAINLIEST MARK
→ What is the likelihood that an organism will produce a male offspring and why?
what is expected to happen during el niño
Answer:During an El nino there is change in the surface waters in the central and eastern Pacific Ocean.
Explanation:
During an El nino there is change in the surface waters in the central and eastern Pacific Ocean. The change makes them to be normal than usual. The change is as a result of the atmosphere and the winds blowing over the vast Pacific.
El nino also happen when natural climate pattern where sea water in the central and eastern tropical Pacific Ocean is warmer than average.
Mark are used in proteins within the body have two functions structure in transport Sarah disagrees which significant function of proteins did mark admit from his list
Answer:
Proteins are large complex compounds made up of one or more polypeptide chains.
They play various roles in living organisms such as:
Transport: They help in transport of material across the cell membrane by forming carriers and channels across the lipid bilayer.Structural role: They are called building block of the body as they provide structure and strength to all the cells. For example, keratin protein is found in nails, hair, and skin, collagen is a protein found in connective tissue et cetera. Immunological role: Antibodies or immunoglobulins are primarily protein in nature which helps our body to fight against a pathogen. Biochemical reactions: In living organisms, proteins in the form of enzymes help in escalating the biochemical reactions taking place in an organism. For example, RuBisCO. Chemical messenger: Proteins also occur as chemical messengers in the form of hormones such as insulin et cetera.Thus, Mark did not add immunological role, role in biochemical reaction, and role as chemical messenger of proteins.
How many atoms are there in 2.8 moles of carbon? Show work
Final answer:
To find the number of atoms in 2.8 moles of carbon, multiply the number of moles (2.8) by Avogadro's number (6.022 × 10²³ atoms/mole) to get approximately 1.68616 × 10²´ atoms.
Explanation:
To calculate the number of atoms in 2.8 moles of carbon, we can use Avogadro's number, which is 6.022 × 10²³ atoms per mole. By definition, a mole is an amount of substance that contains the same number of particles as there are atoms in 12 grams of carbon-12.
The steps are as follows:
Identify the number of moles given, which is 2.8 moles of carbon.Multiply the number of moles by Avogadro's number to get the total number of atoms.Calculation:
2.8 moles × 6.022 × 10²³ atoms/mole = 1.68616 × 10²´ atoms
So, 2.8 moles of carbon contains approximately 1.68616 × 10²´ atoms of carbon.
What Type Of Cloud Is Cloud A. What kind of weather might you expect when you see clouds of this type?..
Cloud A is a Cumulus cloud. You should expect fair weather.
Answer:
It is 100% A!
Explanation:
Which conclusion can be drawn based on the sedimentary rock diagram below?
A. Trilobites are younger than clams.
B. Snails and clams evolved into mammals.
C. All species once lived on land.
D. Biodiversity increased with time.
Frank had researched how solar technology can help save every. Which group should frank approach to share his findings?
A. SERI/NREL
B. IPCC
C. EPA
D. NOAA
the answer is A) SERI/NREL i think
what factor that contributes to cancer increases with exposure to the sun?
a) tobacco
b) radiation
c) asbestos
d) genetics
Though some bacteria cause disease and illness in humans, the majority are harmless. Some bacteria are used to aid digestion, used in preparation of certain foods, used to battle infections or used by industry. Bacteria have many important roles in nature. All BUT ONE is a role of bacteria out in the world around us.
A) Some bacteria increase the soil fertility.
B) Bacteria carry out 60% of total nitrogen fixation in natural ecosystems.
C) Bacteria are responsible for converting sunlight into usable chemical energy.
D) Bacteria decompose organic matter, by decay and putrefaction, to keep our earth clean.
the ans3wer would be a
The answer is C
Hope this helps!!!:)
Based on the Cell Cycle Summary Chart above, which statement pair is correct?
A
G1 phase - DNA replication
B
G2 phase - preparation of mitosis
C
S phase - DNA replication
D
M phase - mitosis
Answer:
it is c
Explanation:
Identify the characteristics of a cell. Check all that apply. measures 3-500 micrometers infects all forms of living cells grows and reproduces responds to stimuli contains DNA or RNA, not both contains a cell membrane
1,3,4,6 is the answer
Cells have several defining characteristics, such as the ability to grow, reproduce, respond to stimuli, contain DNA or RNA, and possess a cell membrane. Prokaryotic cells are a typical example that can be identified by these features when observed under a microscope.
Explanation:Characteristics of a cell include:
Measures between 3-500 micrometers, although most prokaryotic cells are smaller (0.1 to 5.0 µm).Grows and reproduces, which is one of the fundamental properties of cells.Responds to stimuli, exhibiting responsiveness to the environment.Contains DNA or RNA, not both at the same time; cells contain genetic material for replication.Has a cell membrane that separates the interior of the cell from its external environment.An example that justifies these identifications is the prokaryotic cell, as seen under a microscope, which might include a cell wall, plasma membrane, cytoplasm, ribosomes, and DNA in a nucleoid region, without a membrane-bound nucleus. Such cells may also possess additional structures like flagella, pili, or capsules.
Describe some species interactions during reef building.
Reefs are formed by calcium carbonate produced by the coral polyps. As a single polyp dies, its soft tissue decays, but the calcium carbonate cup remains.Other polyps build on top of the cup, and when they die, other polyps will build on their cups. Over time, this process creates larger and larger coral reefs.While corals are the chief architects of the reef structure, they are not the only builders. Corallin algae cement various corals together with compounds of calcium, and other organisms such as tube worms andmollusks donate their hard skeletons to the construction.
Some of the interactions that occurs during reef building is called mutualism.
What is reef building?The reef building can be defined as the activities of the organism called coral polyps which involves the secretion of layers of calcium carbonate.
There are many different species interactions that occur during reef building.
One example is mutualism, where two species benefit each other.
For example, the zooxanthellae, a type of algae, provides food to the coral polyps through photosynthesis. In return, the coral provides a protected environment and carbon dioxide for photosynthesis.
Learn more about photosynthesis here:
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If you want to know the damage that an earthquake of a 7.0 magnitude can do, refer to a _____. Mercalli intensity scale tiltmeter Richter scale moment magnitude scale
The answer is; Mercalli intensity scale
It measures the intensity of an earthquake which can be determined by its destruction effect. The Ritcher scale on the other hand mostly measures the energy of an earthquake. The Mercalli scale ranges from I (no destruction) to XII (Total destruction).
Answer:
Option (1)
Explanation:
Earthquakes occurs due to the sudden trembling of the earth. These releases energy due to the propagation of seismic waves in the interior of the earth. These earthquake can cause great damages depending upon the intensity and magnitude of the earthquake.
The Mercalli scale was invented by Giuseppe Mercalli, in the year 1902. This scale measures the intensity of an earthquake. This intensity is marked by the amount of damage it causes in a particular area. It does not determine the magnitude of the earthquake. These scale ranges from I to XII, where I depicts a earthquake of least intensity, and XII depicts an earthquake of maximum intensity and it is very destructive.
The correct answer is option (1).
Ardell had a schizophrenic episode and a subsequent schizophrenia diagnosis ten years ago. he was treated successfully with medication and returned to work. nonetheless, ardell still has some problems, including peculiar mannerisms and thoughts, and unusual affect. what phase of schizophrenia best characterizes ardell's current level of functioning?
The correct answer is a residual phase of schizophrenia.
This phase is demonstrated when the patient is no longer showing any conspicuous signs. In such cases, the schizophrenic symptoms usually have lessened in severity. The delusions, idiosyncratic behaviors, or hallucinations may still be persisting, however, their appearances are substantially reduced in comparison to the acute phase of the illness.
The distribution of na+ ions across a typical biological membrane is 10 mmol/dm3 inside the cell and 140 mmol/dm3 outside the cell. at equilibrium, the concentrations are equal. what is the gibbs energy difference across the membrane at 37 deg c? assume activities are equal to concentrations. answer in kj/mol. note the difference should be calculated assuming the initial and final states are inside and outside of the cell, respectively.
The Gibbs free energy of the system refers to a state function as it is illustrated in terms of thermodynamic characteristics, which are state functions. ΔG = -RT ln(K)
K is just the concentration of keeping it at one end.
K = 10 mmol / 140 mmol
R is a constant = 8.31447 J/molK
T = 273 + 37 = 310 K
ΔG = -310 × 8.31447 × ln (10/140)
= 6802 J.
Choose all that apply : Growth _____.
*occurs only in multicellular organisms
**only increases size of cells
***usually increases the complexity of an organism's structure
****is unpredictable
Answer: usually increases the complexity of an organism's structure
is unpredictable
Explanation:
Growth is define as the considerable increase in the size, age, height, length and weight of the organism. With the increase in the growth of the organism the complexity in structure of the organism also increases due to increase in the number and size of the cells. The growth is unpredicatable phenomena due to factors such as availability of food and water, genetic and environmental factors.
Answer:
***usually increases the complexity of an organism's structure
Explanation:
The other answer says usually increases the complexity of an organism's structure is unpredictable, that is two answers in one so the answer would be ***
After a direct blow to the eyeball with a soccer ball, your athlete complains of double vision and numbness in her cheek. you also notice that she has noticeable swelling and a downward displacement of the injured eye. what injury might you suspect?
In the given case, one may suspect for an orbital fracture.
An orbital fracture refers to a traumatic injury to the eye socket bone. These injuries are generally the outcome of blunt force trauma to the eye. There are three prime kinds of orbital fractures, which can take place:
1. Orbital rim fractures take place in the eye socket's bony outer edges.
2. The blowout fractures take place when the rim remains intact, however, a crack produces in the wafer-thin bone, which forms the eye socket floor.
3. Direct orbital fractures refer to the rim fractures, which have elongated into the floor.
Bo was reading in his science book and discovered that marble is a type of rock that is found in Georgia. He read that marble is formed when limestone deep below Earth's surface is heated and pressure is applied. What type of rock is marble?
Final answer:
Marble is a metamorphic rock formed from limestone under high heat and pressure, known for its light color and durability, and used historically in construction and sculpture.
Explanation:
Marble is a type of metamorphic rock that is formed under the surface of the Earth. It originates when limestone is subjected to high heat and pressure, causing it to recrystallize. This process transforms limestone into marble, a harder rock typically characterized by a light color, often white, due to its calcite or dolomite composition. Marble also features colorful markings, contributed by impurities in the original limestone. With its beautiful appearance and durability, marble has been quarried for centuries and used in various applications like buildings and sculptures.
What part does subduction play in the rock cycle?
A. It breaks rocks into sediment
B. It decreases pressure on buried rocks
C. It pulls rocks deep into earth
D. It pushes rocks up to Earths surface
Answer:
Option (C)
Explanation:
The subduction zones are the features that are created along the convergent plate boundary, where two plates move towards each other. As both the converging plate collides, the denser and heavier plate subducts below the less denser plate and this results in the formation of the subduction zone. As the heavy plate goes down, the pressure on the buried rocks increases and the denser rocks are pulled down deep into the greater depth, where the rocks undergoes partial melting. This zone is marked by the presence of a V-shaped trench that lies just above it.
Thus, the correct answer is option (C).