At the beginning of meiosis I, a female wallaby's germ cell contains 10 homologous pairs of chromosomes and a total of 20 chromatids, making option A the correct choice.
The formation of ova, or female reproductive cells, in female swamp wallabies (Wallabia bicolor), involves diploid germ cells with 10 chromosomes each. At the start of meiosis I, these germ cells will have 10 homologous pairs of chromosomes. Since each chromosome is replicated before meiosis begins, this will result in 20 chromatids in total. Therefore, the correct answer to the question is that a female wallaby germ cell contains 10 homologous pairs of chromosomes comprising a total of 20 chromatids at the beginning of meiosis I. This is option (Choice A).
I NEED HELP WITH THIS QUESTION ITS DUE TOMORROW
I CANT DO QUESTION 14 IM STUCK ON IT
CAN SOMEONE HELP ME PLEASE
Is 14 the one down at bottom? If so, it would be a cell wall and chloroplasts; only plant cells have those. I hope this helped!
Identify the dependent and independent variables in the following examples. a. Height of bean plants is recorded daily for 2 weeks growing in different fertilizers.
Answer:
Identify the dependent and independent variables in the following examples. a. Height of bean plants is recorded daily for 2 weeks growing in different fertilizers.
Height of the bean plant is the dependent variable while the different fertilizer is the independent variable that the bean plant height depends on
Explanation:
In the given example, the type of fertilizer used on bean plants is the independent variable and the resulting height of the bean plants is the dependent variable.
Explanation:In these examples, the independent variable is the factor that you manipulate or change. In this case, the independent variable is the type of fertilizer used on the bean plants. On the other hand, the dependent variable is what you measure or observe change in as a result of the independent variable. Here, the dependent variable is the height of the bean plants. The height of the bean plants may change based on the type of fertilizer used, making it dependent on the independent variable.
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What is a physical
property of the substance
inside the flask?
A. it is a plasma
B. it is a gas
C. it is a liquid
D. it is a solid
Answer: your answers are between b c and d hope this
Helps w
Explanation:
The sugar industry is on a decline. To boost sales, sugar executives decide to make a new commercial encouraging consumers to eat sugar. In the commercial, a person is holding a bowl of table sugar. They eat a spoonful of the sugar and say, “Eat sugar, it’s fat free!” Is this false advertising? Use the concepts of biomacromolecules we learned in class to explain your answer.
Answer:
the macro molecule say that
Explanation:
Please help me but them in the right box!!! Will give brainlist :)
Answer:
1) Light energy converted into usable chemical energy - - - - - Photosynthesis reaction.
2) Converts glucose to ATP - - - - - - - aerobic and anaerobic respiration.
3) Does not require oxygen - - anaerobic respiration.
4) Oxygen is a reactant - - - aerobic respiration.
5) Light energy converted into usable chemical energy + Oxygen is a reactant - - - - Photosynthesis reaction, aerobic respiration.
6) Light energy converted into usable chemical energy + Does not require oxygen - - - -Photosynthesis reaction, anaerobic respiration.
7) Does not require oxygen + Oxygen is a reactant - - - aerobic respiration, anaerobic respiration.
8) All - - - - chemical reactions.
Select all the correct answers.
According to Newton's law of universal gravitation, which statements are true?
As we move to higher altitudes, the force of gravity on us decreases.
As we move to higher altitudes, the force of gravity on us increases.
As we gain mass, the force of gravity on us decreases.
As we gain mass, the force of gravity on us increases.
As we move faster, the force of gravity on us increases.
Reset
Next
Answer:
The correct answer is : As we gain mass, the force of gravity on us increases.
Explanation:
For this lab, assume that the allele for black fur is dominant. This allele’s symbol is .The allele for white fur is recessive. This allele’s symbol is .
For this lab, assume that the allele for black fur is dominant. This allele's symbol is B. The allele for white fur is recessive. This allele's symbol is b.
What do you mean by alleles?According to the leading textbooks on genetics and evolution, an allele is a variation of the same sequence of nucleotides at the same location on a long DNA molecule.
At a given genomic location, an allele is one of two or more versions of the DNA sequence (a single base or a segment of bases). For any given genomic location where there is variation, an individual inherits two alleles, one from each parent.
For instance, a prevailing allele can supersede the characteristics of other latent alleles, and these properties assist with concluding things like an individual's eye and hair tone.
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Answer:
Black fur is B
White fur is b
Explanation:
edge
Match the # in the diagram with the correct structure/term.
Column A Column B
1. -------- a. tRNA (anti-codon)
2. ------- b. amino acid
3. -------- c. polypeptide chain (protein)
4. --------- d. codon
Match the color "RED" numbers to the words from column B.
Put the words from Column B on the numbers from 1-4 on Column A.
Answer:
I just know 2 is polypeptide chain did you what process is that ?
What Chemical energy is produced as a result of photosynthesis
Answer:
Glucose is a form of chemical energy which is produced in the plants during the process of photosynthesis.
Explanation: Photosynthesis is a process in which light energy is converted into chemical energy. In this process, carbondioxode enters through small opening called stomata and water is absorbed by the plant from the soil in the presence of sunlight produces oxygen and glucose. Oxygen is released in the atmosphere and glucose is stored in different parts of plant body.
The 6-kingdom system of classification divides the former kingdom Monera into two kingdoms, Eubacteria and
Explanation:
The 6-kingdom system of classification divides the former kingdom Monera into two kingdoms, Eubacteria and
Archaebacteria
Answer: Archaebacteria . Is the answer period
Explanation:
Amanda is presented with a piece of metal and asked to determine its physical
properties. Which of the following groups best represent the physical properties of
metal.
soluble in water, thermal conductivity, low melting point
electrical conductivity, high melting point, soluble in water
thermal conductivity, magnetism, low melting point
magnetism, electrical conductivity, high melting point
Answer:
D. magnetism, electrical conductivity, high melting point
Explanation:
Magnetism is the property of metal due to which they are attracted by magnets. Metals have high electrical conductivity which means they are good conductors of electricity. They also have high melting points i. e. they require high amount of heat to change its solid state into liquid state. In melting, bonds are broken down due to the applicable of heat energy.
The last option is correct.
magnetism, electrical conductivity, high melting point
The following information should be considered:
Magnetism is the property of metal because of which they are attracted by magnets. Metals contains high electrical conductivity that represents they are good conductors of electricity. They also have high melting points in the case when it require high amount of heat to change its solid state into liquid state. In melting, bonds are broken down due to the applicable of heat energy.Learn more: brainly.com/question/17429689
Put the steps of dna replication in order:
Helicase unwinds the DNA
DNA polymerase binds follows the leading strand
Hydrogen bonds form between bases
Two strands of DNA are made
Answer:
Helicase unwinds the DNA, DNA polymerase binds...., Hydrogen bonds...., Two strands....
Explanation:
It i salready in order. Some pictures on Google may help with this too.
are Chromosomes structures are always present in a cell.
Answer:
No.
Explanation:
Chromosomes are visible only in reproduction otherwise they are in thread like structure called chromatin. Almost all nucleated cells contain chromatin or chromosomes while non-nucleated cells don't have chromosomes because chromosomes are always present in nucleus. Non-Nucleated cells include Red Blood Cells and thrombocytes.
Final answer:
No. Chromosomes are only coiled and visible during cell division; otherwise, they exist as chromatin, an uncoiled DNA-protein complex, within the nucleus.
Explanation:
Chromosomes are structures found within the nucleus of a cell and are comprised of DNA, the hereditary material, and proteins. These structures are not always present in their familiar condensed form; they are visible and distinguishable from one another only during cell division when the DNA coils into thick structures. In eukaryotes like humans, chromosomes are linear, and each species has a specific number of chromosomes.For instance, human cells contain 46 chromosomes. At other times, during phases like growth and maintenance, this DNA-protein complex exists as chromatin, which resembles unwound strands rather than distinct chromosomes.The coiled structure of chromosomes during cell division ensures the proper segregation of genetic material to daughter cells. Chromatin is the less condensed form of DNA that serves as a material from which chromosomes form.In summary, while chromosomes in their characteristic coiled form occur only during cell division, chromatin is always present within the nucleus, representing the uncoiled state of the chromosome's DNA-protein complex.2) Fovea is the point of accurate vision. Give reason.
-
Fovea is a tiny pit located in the macula of the retina in the eye provides the accurate vision.
Explanation:
The Fovea is mainly used for sharp central vision, that is very essential for human activities like reading and driving.
In the middle of the retina is a small dimple called the fovea or fovea centralis. A thin layer of light receptor cell covers the inner surface of the choroid.
It produces high visual clarity in the eye that produces sharpest vision and greatest color discrimination. The sharpness is because of high concentration of cone cells in the fovea.
Fovea, the blind spot is where the optic nerve connects to the retina in the back of each eye is known as optic disk.
How does embryo of vertebrates tell us that we have a common ancestor
Answer: Embryos are basically the first stages of new life when it comes to animals and humans. When a human Embryo was compared to a fish embroyo, both had gills. However, the gills on the human embryo disappear before the birth process. We can use this to find common ancestors in animals and humans by finding the similarities/differences between the embryos.
Explanation:
How do you adaptations help animals
Answer:
it helps animals adapt to the places around them
Which species will most likely have the most genetic diversity among their offspring
Answer:
Species that reproduce sexually have greater genetic diversity than species that reproduce asexually.
Explanation:
Species that reproduce sexually and have a wide variety of forms within their genus are most likely to exhibit the highest genetic diversity among their offspring, proving crucial for adaptation and evolution.
Among different species, those with a higher variety of forms and ecological roles are likely to have the most genetic diversity among their offspring.
This diversity is crucial for adaptation and the potential for evolution, emphasizing the importance of sexual reproduction in contributing to genetic variability.
Species that undergo sexual reproduction, where the genetic material of two individuals combines, tend to produce offspring with significant genetic differences from their parents.
This variability is a key asset in adapting to changing environments and overcoming challenges.
Therefore, among various species, those that reproduce sexually and have a wide range of types within a genus will likely exhibit the highest genetic diversity among their offspring.
If the outside temperature decreases by 20 degrees Celsius, what will happen to a reptile’s body temperature?
Final answer:
A reptile's body temperature will decrease with a 20-degree Celsius drop in outside temperature due to their ectothermic nature. They become sluggish and may enter estivation to conserve energy, performing only vital functions to survive.
Explanation:
If the outside temperature decreases by 20 degrees Celsius, a reptile's body temperature will also decrease. This is because reptiles are ectothermic organisms, meaning their internal body temperature is determined by their surrounding environment. Unlike endothermic animals, which can generate internal heat to maintain constant body temperature, reptiles must rely on behavioral adaptations to regulate their temperature. Reptiles, such as an American alligator basking in the sun, absorb heat when it is available to increase their body temperature.
When environmental temperatures drop, reptiles like snakes will seek shelter and become sluggish as their body temperature falls. This slowdown can affect their heart rate, breathing rate, and overall metabolic function. Some reptiles may enter a state of estivation, a period of inactivity and lowered metabolic rate, to conserve energy and survive until temperatures become favorable again. In essence, a reptile's body will perform only critical activities necessary to sustain its living state during such times.
Final answer:
A reptile's body temperature will likely decrease if the outside temperature drops by 20 degrees Celsius because reptiles are ectotherms and their temperature varies with environmental conditions. They may enter brumation to cope with the cold.
Explanation:
If the outside temperature decreases by 20 degrees Celsius, the body temperature of a reptile is likely to decrease as well since reptiles are ectotherms. Reptiles rely on external heat sources to regulate their body temperature. Without behavioral adaptations such as basking in the sun, a reptile’s body temperature will drop in response to the cooler environmental temperatures. This is because reptiles are also poikilotherms, meaning their body temperature varies with the environment.
In colder conditions, reptiles may enter a state of brumation, a dormancy-like state where metabolism slows down and the reptile becomes very sluggish. It is important for reptiles to find ways to maintain their body temperature, as a significant drop can affect their physiological processes and overall survival.
What is the sign finance of an AUG codon
Answer:
The significance of AUG codon is that it signals the ribosome to start translation.
Explanation: Codons are three nucleotides sequence found on the mRNA strand that codes for a specific amino acid. There are 64 codons, one is the start codon, three are stop codons while 61 codes for twenty amino acids. AUG is the start codon which signals the ribosome to start protein synthesis. The AUG codon also codes for amino acid methionine.
what is the define for infection
Answer:
The process of infecting or the state of being infected
Explanation:
How did chloroplasts end up in the producers cell
Answer:
they were a paracite
Explanation:
the mitochondrial theorem or something. basically they live in a symbiotic relationship but originally it was two separate life forms. this is true for the mitochondria and chloroplasts
Answer:
They begin as bacteria but are then enlarged by larger cells.
The first place to turn for help is your friends. True False
tbh idk what subject this is in
Answer:
Well I say true I mean if your scared to talk to a adult then your friend should be the first person to ask for help
Explanation:
Explain why the saprotrophs and detritivores are placed to one side of the pyramid
Answer:
The saprotrophs and detritivores are placed to one side of the pyramid because they are decomposers which feed on dead bodies of all the living organisms which are present in the trophic levels i. e. producers, primary consumers, secondary consumers and tertiary consumers etc. When they feed on dead bodies, they released nutrients which are used by the plants.
during which stage of the cell cycle does DNA replication occur?
Answer:
At mid-interphase
Explanation:
The DNA replicates during the S phase of interphase, after G1 and before G2, the two growth phases. Throughout interphase, the DNA is extended, and free nucleotides have access to the strands.
During division (M phase) the DNA is condensed, so that the chromosomes are short, compact, and easily moved to the poles of the spindle.
DNA replication takes place during the S phase or synthesis phase of the cell cycle, which is part of interphase. This precedes the mitotic phase where actual cell division occurs. This process ensures each daughter cell receives an identical copy of DNA.
Explanation:The process of DNA replication occurs during a specific phase of the cell cycle known as the S phase, or synthesis phase. During this stage, DNA replication can proceed, resulting in the formation of identical pairs of DNA molecules, or sister chromatids, that are essential for successful cell division. The S phase occurs as part of interphase, prior to the cell's entry into the mitotic phase where actual cell division takes place. The cell cycle is a series of carefully timed and regulated stages that involve cell growth, DNA replication, and cell division, leading to the formation of two new daughter cells, each with an identical copy of the DNA.
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Are the bones arranged in a similar way in each animal?
Bones in different animals show a pattern of similarity known as homologous structures, indicating a common evolutionary past; though they may have adapted over time for various functions. Homologous structures share common ancestry, while analogous structures serve similar functions but evolve independently. This evidence supports the concept of evolution, helping to trace the lineage and relationships among species.
Explanation:The bones in various animals are not arranged identically across all species; however, they often exhibit similarities that suggest a common evolutionary past. These similarities are a result of the bones being derived from a common ancestor, with changes occurring over time due to evolutionary pressures.
Homologous structures in organisms, such as the bones in the limbs of humans, dogs, and whales, share the same basic layout that originated from their shared ancestor's appendages. While the bones might have evolved differently to suit different functions, they maintain a consistent pattern.
It is important to distinguish between homologous and analogous structures. Homologous structures share a common embryonic origin, while analogous structures have similar functions but different origins.
For example, the bones in a whale's front flipper and the human arm are homologous, not analogous, while wings of butterflies are analogous but not homologous to bird wings. Some structures, like the wings of bats and birds, can be both analogous and homologous because they serve the same function and also share a similar structure.
Bones, which are organs comprised of tissues, come in various shapes and sizes. The 206 bones in the human skeleton are categorized by shape and function. This structural diversity among species provides evidence for evolution and helps scientists understand the relationships between different organisms.
The answer is no, the bones are not arranged in the same way in each animal.
The arrangement of bones, known as skeletal structure, varies significantly among different animal species. This variation is a result of evolutionary adaptations to diverse environments and lifestyles. There are five main types of skeletal systems found in animals:
1. Hydrostatic skeleton: Found in soft-bodied animals like earthworms and jellyfish, it consists of a fluid-filled cavity that provides structural support.
2. Exoskeleton: This is the hard outer shell that supports and protects the bodies of arthropods such as insects, spiders, and crustaceans.
3. Endoskeleton: Composed of bone or cartilage, this internal skeleton is found in vertebrates, including fish, amphibians, reptiles, birds, and mammals. Despite being endoskeletons, the specific arrangement and number of bones can differ greatly between these classes. For example, the skeleton of a bird is adapted for flight, with lightweight, hollow bones, while the skeleton of a whale is adapted for swimming, with a streamlined shape and strong, dense bones.
4. Shell: Some animals, like mollusks and turtles, have a hard shell that serves as protection and support.
5. None (Acellular): Some animals, like sponges, do not have a true skeletal system.
Even within the same class of animals, such as mammals, the skeletal structure can vary. For instance, the human skeleton is adapted for bipedal locomotion, while the skeleton of a bat is adapted for flight. Similarly, the skeleton of a dolphin is adapted for an aquatic lifestyle, with a spinal column that is less flexible than that of a land mammal to aid in efficient swimming.
In conclusion, while all vertebrates have an endoskeleton, the arrangement and structure of the bones are tailored to each species' unique ecological niche, resulting in a wide diversity of skeletal arrangements across the animal kingdom.
Describe the role of the American alligator as a keystone species
Alligators have a big habit of helping carnivores like the wolf, cougar, bear, etc. hunt off deer and fish. Even with this amount of carnivores around, just a simple change as one carnivore removal such as the alligator would increase the fish population. This would make the bears have more time for fishing. The next thing to happen would lead to bears increasing more rapidly, then deer, elk, and moose begin to decrease due to the bear increase.
What is immunity?
That is my question
Answer:
In biology, immunity is the balanced state of multicellular organisms having adequate biological defenses to fight infection, disease, or other unwanted biological invasion, while having adequate tolerance to avoid allergy, and autoimmune diseases.
What does this image represent about population (the black dots represent population)?
A.
uniform population distribution
B.
life table
C.
survivorship curve
D.
random population distribution
E.
clustered population distribution
Answer:
D random population distribution
Explanation:
for plato
Answer:
D. random population distribution
Explanation:
You have been assigned to write an essay about a time when you felt under pressure. Which would make the most appropriate introductory sentence to this essay?
A) Some people handle pressure very well, while others don't.
B) People face many pressure-filled situations in their lifetimes.
C) Feeling under pressure has certain notable effects on the human body.
D) The time I felt most under pressure in my life was when I was in my senior year of high school.
D) The time I felt most under pressure in my life was when I was in my senior year of high school.
This introductory sentence directly introduces the main theme of the essay and provides a clear focus on the specific time and context in which the pressure was experienced.
The best introductory sentence for an essay on a pressure-filled time is one that specifies the event and its impact, such as discussing pressure during senior year of high school, which creates a strong hook and context for the narrative. Therefore, the correct answer is D.
Explanation:The most appropriate introductory sentence to an essay about a time when you felt under pressure would likely be D) The time I felt most under pressure in my life was when I was in my senior year of high school. This sentence immediately informs the reader about the specific event the essay will describe and sets the stage for a personal narrative. As it introduces a clear and concrete example, it effectively hooks the reader and provides a smooth transition into the essay's body where the specific challenges and emotions related to the experience can be detailed.
match each situation to the correct graph.
1. clownfish lay hundreds of eggs,but only 10% to 15% survive into adulthood.
2. 80% of elephant calves survive into adulthood.
3. A population of beetles in a newly colonized field grows exponentially.
4. A wolf population grows over a certain period and then stabilizes.
1. Clownfish lays hundreds of eggs, but only 10 to 15% survive in adulthood. This completely fits for graph number 4 which shows rapid declining in the population by time.
2. 80% of elephant calves survive into adulthood. This is described graphically by graph number 1 where great number of population size increases stably over a certain period of time.
3. A population of beetles in a newly colonized field grows exponentially. So an exponential graph - a "J" shaped curve in graph number 2 which shows an exponential increase in population size.
4. A wolf population grows over a certain period and then stabilizes, can be described by graph number 3 which is a "S" shaped curve.
It shows that after increasing for certain period of time the population stabilizes due to any environmental factors.
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