Answer:
The cytoskeleton of a cell is made up of a few key components:
microtubules
actin filaments
intermediate filaments
Those three components/structures help give the cell its shape, and organize its parts.
I hope I helped you, and a "Brainliest" is always appreciated! ☺
A population of mosquitoes is exposed to the pesticide DDT for several generations. At the end of that time, most individuals in the population are resistant to DDT. The most likely reason is that:
A. random mutations in each generation made mosquitoes resistant to DDT.
B. some individuals in the original population had the mutations that led to resistance.
C. DDT caused the mutations that led to resistance.
D. somatic mutations in the original population were passed on to subsequent generations.
E. by chance, new mutations that led to DDT resistance arose after DDT was used.
Answer:
B
Explanation:
A population of mosquitoes is exposed to the pesticide DDT for several generations. At the end of that time, most individuals in the population are resistant to DDT and the most likely reason is that some individuals in the original population had the mutations that led to resistance. Option B is correct.
What is mutation ?Mutation is the change in which there is slight change in the genome sequence of a DNA or RNA along with the gene. The mutation lead to various types to adaptations along with the diseases.
Resistance is the condition when the species on the multiple exposures develop certain kind of adaptations to it and these traits are sometime inherited sometimes not inherited.
Mutations are friendly as well where sometimes a disease causing mutation can be altered with the further mutation in it.
Therefore on the multiple exposure it led to condition of resistance in the species.
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12
Suppose a fire burns through the beetles habitat, leaving the trees, soil, and some rocks
charred black for several years. Most of the beetles and their predators survive the fire and
continue to live in the habitat.
a. Identify which beetle phenotype or phenotypes will most likely be favored in the habitat
after the fire. Explain your answer.
b. Identify the type of natural selection (directional, stabilizing, or disruptive) that will most
likely act on the beetle population.
The type of natural selection you identified in part (b) will change the phenotype distribution
in the beetle population.
c. Using your knowledge of natural selection, explain how the change in phenotype
distribution will occur.
Answer:
The answer is B
HAVE A BLESSED DAY WONDERFUL CREATION OF GOD
Explanation:
B.Identify the type of natural selection (directional, stabilizing, or disruptive) that will most likely act on the beetle population. The type of natural selection you identified in part (b) will change the phenotype distribution.
What do you mean by the term natural selection?Natural selection is the process in which the species are adapted to their environment.
Natural selection leads to evolution when the people having certain characteristics posses the greater chance of survival than the others that are not adapted to the changes, these adapted characteristics are passed to the next generations.
Thus, this could be the answer.
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6. Which marrow was denser (had more mass in the given volume)? What impact would that have on the overall density of the bone?
Answer:
The beef bone marrow was denser than the chicken bone because it had more mass in the given volume. Since the chicken must fly, it cannot have its bones weighing it down on the land. However, cows must find grass on land and travel long distances. This would increase the overall density of the bone.
Explanation:
I finished this assignment last week and received 50/50 points! Trust me on this! :)
*10 points* biology ill give you brainliest if right
Answer: B.
Explanation:
Arrows point to penguin, fish, krill, and other birds.
How did scientists determine how old the ocean floor is?
O A. Watching it grow
O B. Testing radioactive materials
O C. Asking other scientists
O D. Making a guess
Assume that sound A has a decibel level of 10 and sound B has a decibel level of 30. How many times louder is sound B than sound A?
Answer:
3 times louder
Explanation:
10x3=30
If sound A has a decibel level of 10 and sound B has a decibel level of 30 then its a thrice time louder.
What is sound and types of sound?There are two types of sound:
Audible and Inaudible.Inaudible sounds are sounds that the human ear cannot detect.
Whereas human ear hears frequencies between 20 Hz and 20 KHz.
Thus, its a thrice time louder.
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What do you think would happen to the population of rabbits, if the population of foxes decreased?
Answer:
the population of rabbits might increase
Explanation:
With less predators to eat them, the rabbit population will likely go up if the fox population decreases; assuming there are favorable factors such as plenty of food and habitat for the rabbits. At some point, there is a maximum limit to the number of rabbits that a certain location can hold. Once this limit is reached, (some of) the rabbits will migrate elsewhere or unfortunately die off.
As the rabbit population increases, the fox population may rebound and start increasing again. This is due to more food being available to the smaller amount of foxes, and there is less competition for food. So the rebounding fox population will likely bring down the rabbit population to a point where food will get more scarce for the foxes. This cycle repeats itself where one population increases while the other decreases, and vice versa. They are very strongly linked together. It's also possible that both will increase together if environmental factors are favorable, but they could easily decrease together if a habitat is being destroyed for instance. It will depend on the circumstance.
1. According to the rules of carbon dating, how much time
passes during one half-life?
Answer:
5,730 yearsExplanation:5,730 years
can y’all help me this one??
Question and answer are in there
Answer:
cold coastal area
Explanation:
since the hurricanes occur this often it must be in coastal area
Answer:
I believe it's warm coasted area, not entirely sure tho
Explanation:
A(n)\ is an area of the planet that shaves similar conditions of climate, fauna (animal life), flora (plant life) and geography .
1.biome
2.environment
3.habitat
4.ecosystem
substance in which the monomer is a nucleotide _______
A - Carbohydrates
B - Nucleic Acids
C - Proteins
D - Fats
Nucleic acid is a substance in which the monomer is a nucleotide. Therefore, option B is correct.
What are nucleic acids?Biopolymers and macromolecules called nucleic acids are important for all known forms of life. They are constructed of monomers called nucleotides, which are composed of a nitrogenous base (adenine, guanine, thymine, uracil, and cytosine), a phosphate group, and a 5-carbon sugar.
The components that make up an individual's genetic code are nucleic acids. Deoxyribonucleic acid (DNA) and ribonucleic acid are the principal two examples of nucleic acids (RNA). They have an important role in heredity and protein synthesis.
Thus, A nucleotide serves as the monomer of a material known as nucleic acid. Therefore, option B is correct.
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All of the humans in a particular city would be considered a population. True or False?
Answer:
The Answer is gonna be True:3
This is the right Answer :3
I hope you are having a great day ❤️❤️❤️❤️❤️
How is it possible for a mutation not to produce any visible effect in an
organism?
Answer:
Some mutations don't have any noticeable effect on the phenotype of an organism. This can happen in many situations: perhaps the mutation occurs in a stretch of DNA with no function, or perhaps the mutation occurs in a protein-coding region, but ends up not affecting the amino acid sequence of the protein.
Which of these are part of the respiratory system? (Select all that apply.)
larynx
sinuses
heart
lungs
Answer:
larynx, sinuses, lungs
Explanation:
Answer:
larynx, sinuses, lungs
I know this is old, but just in case anyone else needs it
Question 3 of 20 -
0000 UNIT SCI07 408 SLPS2021
Question: 1-3
A biologist describes two modern-day species as "sharing a common ancestor." What does it mean when two species share a common ancestor?
Both species evolved from one species that lived in the past
One of the species evolved into the other species
The two species are actually the same species with genetic variation
The two species reproduced with one another and formed a common ancestor
Answer: C. is your answer
Explanation: It means the species shared a common ancestor in the recent past.
Based on the phylogenetic tree, identify approximately how many millions of years ago the earliest south Asian river dolphin evolved
my guess is that it is 130 Million
Your friend Joe has a younger brother Sam and two older sisters. Sam has a strange disorder that has caused his hair to turn green. The doctor says that this is caused by a single gene that is inherited, and that boys are more likely to have green hair then girls. However Joe, his sisters, and both of his parents have normal hair color. Joe does not know much biology and is confused. Explain to Joe how his brother's condition could have arisen even though Joe has normal hair. Then discuss the likelihood that a) Joe, and b) Sam will have children with green hair. Assume that they both marry women with normal hair color. You will need to include information on meiosis and transmission of genes to assure that Joe understands. HINT: As part of your answer, indicate the percent of girls vs. boys that you predict would have green hair if fathered by Joe vs. Sam.
Answer:
The correct answer is - it is due to the case of sex-linked recessive disorder.
Explanation:
It is pointed out by the doctor that Sam has a condition due to recessive allele and it is given that boys have this condition more than girls which suggests that it is a sex-linked recessive disorder. This comes from their parents but it is given that the father has normal hair which means the father has no recessive allele, then it must come from the mother even mother has not this condition but she could be a carrier for this trait.
Joe and his sister do not have this condition as they get the normal dominant allele from mother and father.
The chances of being a carrier by his sisters are 50%. If Joe marries
IF Joe marries a non-carrier woman, he will have all normal children with no green hair. IF Joe marries a normal hair color carrier women then there would 25% chances of being diseased offspring and 50% chances of being a carrier, and if women is completely normal then all offspring will be normal.
carrier woman, his children will have a 25% chance of being green-haired. A 25% chance of being
IF Sam marries a normal woman, the children will have a 25% chance of being a carrier, a 25% chance of being green-haired, and a 50% chance of being normal.
I NEED IT NOWWW ASAP PLEASEE ITS A TEST
Plants with dark brown stems mated to ones with light colored stems: All offspring have a medium brown color.
C. Incomplete dominance
D. Polygenic
E. X-linked gene
B. Codominance
A.Dominant/recessive gene
Answer: could be Polygenic whish you the best in your test i had to take my test at home while everyone at school does it
What is condensation and what cycle is it a part of?
Which statements describe the synapse? Select all that apply
It carries information through electrical impulses to the cell body
It is part of the neuron.
It ensures that information travels in one direction only.
It carries information through chemical impulses to the cell body,
It is the gap between neurons
It ensures that information travels in multiple directions
Answer:
It ensures that information travels in one direction only.
It is the gap between neurons.
Explanation:
It's correct
Answer:
Explanation:
It ensures that information travels in one direction only.
It is the gap between neurons.
what is the function of the stratified squamous epithelium of this type of tissues
Answer:
The stratified squamous epithelium provides protection against mechanical stress, chemical abrasions, and even radiation. The keratinized epithelium present on the surface of the skin blocks out the harmful radiation and prevents the exposure of internal tissues and organs to the radiation.
Explanation:
¡I hope it helps you!
Choose all the answers that apply. The hypothalamus _______
Answer:
A. The anterior pituitary is also known as the adenohypophysis.
C. The anterior pituitary is stimulated by the hypothalamus via hormones that travel through the hypophyseal portal system.
D. Oxytocin is secreted by the anterior pituitary.
Explanation:
Why are pollutants more harmful to tertiary (top) consumers as opposed to producers?
Answer:
because making that substance is does not generate that much pollutants, but using that substance generates more pollution.Explanation:
❤
(a) Describe why monitoring the growth rate of the E. Coli-M bacteria is a useful indicator of the effect of the glycolytic enzyme mutation on the bacteria.
Answer:
The monitoring the growth rate of E.Coli bacteria is a useful indicator of the effect of glycotic enzyme mutation on the bacteria as the flow of intracellular metabolic components depends on the availability of carbon. Hence the change in carbon source can change the glyclyotic enzyme mutation up or down.
Explanation:
Continuous culture is a method that can be used by the researchers for determining whether mutation affects the growth rate of E.Colin-M bacteria
If the growth medium contains higher concentration of acetate,then the growth of the bacteria will be inhibited without inhibiting its central metabolism.
When E.Coli grows ,it secrets acetate. This mechanism is called overflow mechanism. Regulatory interactions mediated by acetyl-phosphate plays a major role in inhibiting growth by acetate. The uncoupling effect of organic acids or perturbation of the anion composition of the cell is a major reason for growth inhibition.
Invasive species are harmful not because of what they are, but because of
Answer:
What they do
Explanation: People put goldfish in lakes and creeks and ponds they invade the area and eat everything there and the animals that are there they take all the recorses that the other speices need
will give BRAINLIEST
question is in the pic
Plants:
1. Most plants respond to the environment by growing towards the light.
2. Plants respond to daily and seasonal cycles and diseases.
Flatworms:
1. Flatworms respond to changes in light.
2. Flatworms adapt to marine life by using diffusion to breathe and to distribute nutrients to other parts of the body.
Humans:
1. The nervous system allows an organism to respond quickly to changes in the internal or external environment.
2. Some humans modify the environment (positively or negatively), such as cutting forests, building dams, and expanding urban areas, etc.
Complete the following sentence.
To reduce the chances of resistant insects evolving from overexposure to BT-modified crops, farmers producing these crops are required to also plant ________varieties of the same crops.
unmodified
To reduce the chances of resistant insects evolving from overexposure to BT-modified crops, farmers producing these crops are required to also plant ________varieties of the same crops.
What emits infrared radiation?
Question 1 options:
humans
non-living objects
anything that contains atoms
Answer:
same as other guy
Explanation:
So you can mark the other person :)
Anything that contains atoms emits infrared radiation. Therefore, option (D) is correct.
What is Infrared radiation?All objects, living or non-living, emit some amount of infrared radiation, which is a type of electromagnetic radiation with wavelengths longer than those of visible light. The amount and wavelength of the infrared radiation emitted by an object depends on its temperature, with hotter objects emitting more and shorter-wavelength infrared radiation.
This is the principle behind the use of infrared cameras and thermal imaging technology to detect and measure heat in a variety of applications, including night vision, medical imaging, and industrial inspections.
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Why the Chimpanzee's diploid number is 24 instead of 48.
I am not sure if the following table supposes me to write 2 (N) on here...
Thank you very much
Answer:
It has 24 pairs and 48 number of chromosomes.
Explanation:
The Chimpanzee's diploid number of chromosome is 24 pairs instead of 48 because of the resemblance with the human cell that have 23 pairs of chromosome. The Chimpanzee has 24 pairs of chromosome or another words we can say that chimpanzee has 48 number of chromosomes not pairs. Humans have 23 pairs whereas apes have 24 pairs of chromosome. The theory suggested about this close number of chromosomes is that at some point two ape chromosomes fused to make a single human one.
Which kind of map projection would you use to explore Antarctica?
Answer:
answer choices?
Explanation: