Option c is Correct. To control the action of mutation, genes are switched on and off.
Genes can be activated and inactivated by each cell. This procedure, known as gene regulation, is crucial to healthy growth. Genes are switched on and off in various ways during development to give a brain cell, for instance, a different appearance and behavior from a liver cell or a muscle cell.
Cells can respond swiftly to environmental changes thanks to gene regulation. RNA switches, also known as riboswitches, control which genes are activated and deactivated in a manner like to a light switch. Although it might seem like a straightforward operation, biologists have been baffled by the inner workings of these switches for decades.
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Why is it important to know the average mutation rate when using DNA comparisons to determine
how long ago lineages split?
Answer:
mutation rates can be used to design molecular clocks in order to estimate divergence times among species
Explanation:
In evolutionary biology, the substitution rates (also known as mutation rates) are used for the development of 'molecular clocks' which allow estimating the divergence times among species or among taxonomic groups. Molecular clocks can be designed by estimating the divergence rate of nucleotide sequences (either DNA or RNA) and amino acid (protein) sequences. These substitution rates can also be used to track how quickly viruses evolve (for example, in a pandemic situation).
Which of the following statements is NOT part of the cell theory? a All cells originate from other cells. b The most basic component of any organism is the cell. c All living things are made up of one or more cells. d All cells have a nucleus and a cell membrane.
Answer:
d) All cells have a nucleus and a cell membrane.
Explanation:
Prokaryotes do not have a nucleus
The diploid cells of a radish plant contain 18 chromosomes. How many chromosomes are in a radish plant's haploid cells?
Answer:
9
Explanation:
The diploid chromosome number for a radish is 18 and the diploid chromosome number for cabbage is also 18. The haploid number for these species is nine. Therefore, the gametes of the radish and cabbage contain nine chromosomes.
design your own, you can use the Browse feature to attach and upload your document. 5. Design your own experiment based on one of your questions from question 1, above. Include the question, hypothesis, independent and dependent variables, and safety precautions. 6. What are three major branches of Earth science?
Answer:
three major branches of earth science are Geology, oceanography, meteorology.
A mouse are 380 calories worth of cherries. A fox catches it . How many calories does the fox obtain?
Answer:
The correct answer would be - 38 calories.
Explanation:
Which configuration and conditions helped the perfume molecules diffuse better?
Answer:
Higher temperatures increase the energy and therefore the movement of the molecules, increasing the rate of diffusion
Explanation:
As the density of a solvent increases, the rate of diffusion decreases. yep i know
There is balance between Apoptosis and Mitosis. What is the
characteristic of life that would involve maintaining this balance?
Metabolism
Respond to Stimuli
Homeostasis
Universal Genetic Code
Answer:
Homeostasis
Explanation:
keep it cool ansd answer my question if u can! :))
How would the presence of cilia, flagella, and pseudopods improve the chances of survival of a unicellular protist?
A.
by increasing the likelihood of obtaining nutrients
B.
by increasing the rate of water exchange
C.
by decreasing the rate of cell division
D.
by decreasing the energy needs of the organism
Answer:
i really dont know but I need the answer too :(
Explanation:
The presence of cilia, flagella and pseudopods improve the chances of survival of a protist by increasing the likelihood of obtaining nutrients. Thus, the correct option is A.
What is locomotion?
Locomotion is the basic act or ability of something to transport or move itself from one place to another. Many protist species have the presence of some type of locomotory organelles on their body which are easily visible under a light microscope. A protists can move by gliding or floating, and by use of organelles such as flagella or cilia.
Protists use these locomotory organelles to find food, a mate, a suitable habitat or to survive and escape form the predators. Types of Movements involved in locomotion include axial and appendicular.
Therefore, the correct option is A.
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What is a simple diffusion?
Answer:
movement of a solute from an area of high concentration to an area of low concentration
Explanation:
In a food chain that includes, in order, plants, markhors, and snow leopards, what roles do markhors play? (Select all that apply.)
Answer:
-They are eaten by snow leopards
-They eat plants
Explanation:
I need help on these questions please.
Can someone please help me please
Answer:
I think so answer is D
Explanation:
I hope it helps you
Pl Mark brainlist answer
how can we control bacterial disease?
Answer:
Bacterial diseases are treated with antibiotics. Antibiotics work by killing the harmful bacteria or by stopping them from reproducing and spreading. Different types of antibiotics are effective for treating specific types of bacteria.
Explanation:
Answer:
by using antibiotics, antibiotics are harvested from fungi because they have a gene that kills the bacteria, i think it only works on bacterial infections, most of the antibiota said are used on animals and live stock.
Explanation:
Mitosis and budding are similar beu
O
Both processes are components of sexual reproduction
The offspring produced by both are genetically diverse
In both, the genetic material comes from a single parent.
O O
Both processes are more common in animals than in plants.
Answer:
animals would be your awnser you are welcome
Explanation:
Which gland is located closest to the human brain?
A The thyroid
B The pituitary
C The adrenal
D The ovaries
Answer:
B. The pituitary gland
Explanation:
Can't be the ovaries, they're down by the hips!
Can't be adrenal glands, they're on top of the kidneys!
Can't be the thyroid, that's low on the front of the neck or something like that!
It's B, the pituitary; it's on the base of the brain.
Have a great day!
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Answer:
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Explanation:
harles Darwin had a hobby of ______________ domestic pigeons.
Answer:
breeding
Explanation:
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Explain the importance/need for homeostasis.
Answer:
look
Explanation:
So ur body can work properly and without it you can die (: Hope I helped im not the best at this.
How do our social groups and social interactions impact our behavior?
Answer:
it makes us addict to fame and people would do anything to be higher up in the social groups
What is true about the insanity defense?
It is defined in the Diagnostic and Statistical Manual of Mental Disorders.
It can be used only if a person is diagnosed with a specific disorder from the DSM.
It is a legal term used to determine if a person can be held accountable for a crime.
It is a legal term that helps to determine if a person committed a crime or not.
It cannot be used if a person was previously found to be responsible for a different crime.
It's a legal term used to determine if a person can be held accountable for a crime. Hope this helps; have a wonderful day.
PHET skate park . Consider this equation: Kinetic Energy = ½ mv2. Which of those variables is changing as the skater moves up and down the track?
Velocity is the variable which is changing during motion of skater.
Impact of velocity on energyVelocity is the variable which is changing when the skater moves up and down the track because moving upward on the slope decrease the speed of the skater while on the other hand, velocity increases when moving downward on the slope.
Mass of the body which is skating remain constant or can't change with height. Mass is the amount of matter present inside the body so we can conclude that velocity is the variable which is changing during motion of skater.
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If one DNA strand reads CCGTAATGCAT, what will be the sequence of the complimentary strand?
Which event shows conditions that lead to natural selection?
A-Weeds are removed by a gardener from a public park
B-Wild horses are tamed over many years and selectively allowed to reproduce.
C-A crab produces millions of offspring in a year, but few survive to adulthood.
D-Farmers collect the largest corn seeds to plant in their fields the following year.
What are the three steps of the water cycle if the rain falls directly into the ocean?
Answer:
1. evaporation
2. condensation
3. precipitation
Explanation:
Which of the following is a macronutrient?
A) iron B) boron C) Calcium D) Manganese
____is a restriction to the flow of electrons
Answer:
Impedance.
Explanation:
Conductors allows the flow of electrons and Impedance restricts it.
In which soil horizon do we find organic material?
Answer:
We can find organic material in
Top soilHope it will help :)
You do a serial dilution in the same manner as the one in the video. A plate with a sample volume of 10-6 mL produced 43 colonies. What was the original cell density (CFU)?
Answer: 43 x 10^6 CFU.
Explanation:
Plate count is a method used to determine the number of viable microorganisms in a sample. When the bacterial concentration is high, serial dilutions are carried out in a 1:10 sequence. Then, the dilutions are successive dilutions keeping the dilution factor constant at each step. Small aliquots of these dilutions are seeded in medium contained in a Petri dish where the bacteria grow forming colonies. Then the plates are incubated and colonies develop both within the agar and on the surface.
If the concentration of the seeded aliquot is too high, the bacteria will grow too much and it will not be possible to distinguish the colonies. However, if the concentration is very low, the number of colony forming units (CFU) may be very low and thus can be counted.
Colony forming units are calculated:
CFU = Number of colonies / (volume seeded on the plate * dilution).
The dilution is 10^-6, the number of colonies counted is 43, and usually the volume plated is 0.1 mL, so we replace that in the equation:
CFU= 43 / (0.1 mL * 10^-6)
CFU= 43000000 = 43 x 10^6
PLEASE HELP!!!!! I NEED PERSON GOOD WITH AP BIOLOGY!! I WILL GIVE BRAINLIEST PLS!!!
Answer:
if crossing over does not occur, the products are parental gametes. If crossing over occurs, the products are recombinant gametes. Meaning they are mixed.
Explanation:
If crossing over doesn't occurs then you wouldn't really mix the 2 parental alleles so you couldn't have a genotype without mixing.
Sorry if im wrong!