Answer:
D
Explanation:
Key points:
- Cells have a variety of mechanisms to prevent mutations, or permanent changes in DNA sequence.
- During DNA synthesis, most DNA polymerases "check their work," fixing the majority of mispaired bases in a process called proofreading.
- Immediately after DNA synthesis, any remaining mispaired bases can be detected and replaced in a process called mismatch repair.
- If DNA gets damaged, it can be repaired by various mechanisms, including chemical reversal, excision repair, and double-stranded break repair.
that's from khan academy^
Use the drop-down menus to answer the questions.
Which feature contains genetic material and is present in a eukaryotic cell but not in a prokaryotic cell?
Answer:
The Nucleus
Explanation:
Prokaryotic cells have DNA (Genetic Material) Floating around in them, but it isn't contained. In Eukaryotic cells, the DNA and other genetic material is stored in the Nucleus of the Cell.
Hope This helped, Please mark brainliest if it did!
Answer:
Nucleus
Explanation:
in a eukatyotic cell there's a Nucleus which contains its genetic material but in a prokaryotic cell there is no Nucleus
point mutation (like substitution)
the answer choices is in the photo I draw a circle around the answer choices
ASAP
Answer:
a type of substitution where ect.
Explanation:
i think sorry if i'm wrong.
(Fossils provide scientists with evidence that allows them to hypothesize how living organisms have evolved over time. Tiktaalik roseae was a unique organism that has been nicknamed the “fishapod” because it is believed to be a species had traits of both fish and tetrapods, the first four-legged animals.)
Which evidence would scientist use to make the connection between ancestry of fish and tetrapods using Tiktaalik roseae?
-using transitional forms
-using relative dating
-studying decreasing complexity
-studying analogous structures
Answer:
A. using transitional forms
Explanation:
On Edge 2020
Using transitional forms is the evidence scientist use to make the connection between ancestry of fish and tetrapods using Tiktaalik roseae.
What is Transitional forms?This is referred as the remains of a life form that exhibits traits common to both an ancestral group and its derived descendant group.
The transitional form which is option A is mostly suited as the organisms involved have common traits.
Read more about Transitional forms here https://brainly.com/question/19296778
what is the scientific name for human??
Answer:
HomoSapiens
Explanation:
Can someone help me with 5
Answer:
Nitrogen
Explanation:
How do the properties of water help it to shape the Earth?
Answer:
Match the term to its example or description.
1 .
Beowulf
ship-burial
2 .
Sutton Hoo
Canterbury Tales
3 .
French
an Anglo-Saxon king
4 .
Norman Conquest
influenced Middle English vocabulary
5 .
Chaucer
an elegy
6 .
Match each movement with the correct label.
flexion
extension
adduction
abduction
elevation
depression
medial rotation
lateral rotation
Answer:
flexion - depression
extension - elevation
adduction - medial rotation
abduction - lateral rotation
Explanation:
Flexion is the process of bending an arm or leg. It occurs as a result of the contraction of the muscles. Depression is a downward movement. Hence, flexion refers to the depression of an arm or leg.
Extension is the process of stretching the body parts. Elevation is an upward movement. Hence, extension refers to the elevation of body parts.
Adduction is the movement of a limb or other part of the body towards the midline or another part of the body. The movement of the limb towards the midline of the body is known as medial rotation.
Abduction is the movement of a limb or other part of the body away from the midline of the body. The movement of the limb away from the midline of the body is known as lateral rotation.
PLEASE HELP!!!!
Neurotransmitters can best be described as
A. electrical charges. B. chemical messengers. C. actions. D. reflexes.
Enter the correct 4 digit code (no spaces)
please help need the answer before 2/24/21
What atoms are rearranged by plants during photosynthesis?
Answer:
Inside the cells of plants, algae, and photosynthetic bacteria, chlorophyll, and enzymes use the light energy to rearrange the atoms of the reactants to form the products, molecules of glucose and oxygen gas.
Explanation:
6. What is the function of the vacuole in a cell?
A.)transports proteins to other locations in the cell
B.) breaks down food and releases energy
C.) stores water, waste products, and food
D.)manufactures proteins
Answer:
c, vacuoles are storage spaces
Answer:
[tex]vacuole \: in \: a \: cell \: stores \: water, \\ \: waste \: products ,\: and \: food.[/tex]
What are the 3 main greenhouse gases ?
Answer:
carbon dioxide
methane
nitrous oxide
Answer:
Carbon Dioxide.
Methane.
Nitrous Oxide
In which way does genetic variation within a population help to ensure the survival of a species in response to the environment in which they live?
PLEASE HELP I WILL MARK AS BRAINLIEST
A.
Genetic variation causes the members of the population to require a different source of food.
B.
Environmental changes which affect one organism within the population may not affect others.
C.
Genetic variation occurs when environmental conditions remain stable for an extended period of time.
D.
Environmental changes decrease genetic variation so that the population experiences fewer adaptations.
Answer:
Genetic variation occurs when environmental conditions remain stable for an extended period of time
PLEASE HURRY!!!!!Where on the membrane does an active transport pump work
Answer:
Active transport often takes place in the internal lining of the small intestine.
Explanation:
A heterozygous Tall and heterozygous red flower is crossed with a
short heterozygous red flower. What are the chances of having a short, white
flower? Your answer can be in fraction, decimal or percent.
Answer:
Explanatio— What are the chances of having a short, white flower? Your answer can be in fraction, decimal or percent.
Help me ASAP please I’m being timed
Answer:
i think it is 4 but i am not sure
Explanation:
Answer:
From common sense I would select B. But I have not gotten to biology, so I do not know for sure. if I get it wrong, I am truly sorry.
Can someone pls help me with these two question pls I would really appreciate it. I’ll give brainliest to whoever answers it correctly.
Answer:
lithium and oxygen - ionic bondsulphur and oxygen - covalent bondwhich stage of cellular respiration extracts the most energy
I need the answer for number 4
Answer:
chicken wings I believe
Cold air is denser than warm air and therefore has higher what?
1.Air pressure
2.Amount of water vapor
3.Mass
4.Volume
.
PLSSS HELP ITS EASY JUST THAT IM D_UMB
Sickle-cell anemia is a recessive trait in humans. In order to express the disease, an affected individual must inherit two recessive alleles (ss). What is the probability that the offspring of two heterozygous parents will also be heterozygous?
a) 0/4
b) 1/4
c) 1/2
d) 3/4
Answer:
The answer is 1/2 i tried and got it wrong ;-;
Explanation:
Why is the sugar called deoxyribose?
Answer: The sugar in DNA is called a deoxyribose because it doesn't have a hydroxyl group at the 2' position. Instead it just has a hydrogen
Explanation:
The energy produced by cellular respiration is stored in the A ionic bonds of water. B bonds between phosphates of ATP. C chemical bonds of carbon dioxide. D double covalent bonds of oxygen molecules.
Answer:
B
Explanation:
I need points
1. The average household in the United States spends $1,500 a year on
a. repairs to the home.
b. windows and doors.
c. insulation.
d. energy bills.
Answer: D. energy bills
Explanation: Good luck! :D
What is not an example of radiant energy?
A. Light bulb
B. A heating pad
C. The sun
D. o2 released from plants
A sort of radiant energy that is visible and moves in waves is light. It is the only type of energy that the human eye is capable of seeing, hence option D is correct.
What is radiant energy?Radiant energy sources comprise the full electromagnetic radiation spectrum, including gamma rays, x-rays, radio frequencies, microwaves, light, and heat radiated by a bonfire.
Light energy is produced by the Sun and other stars, light bulbs, lasers, and heated things, heat coming off of a heated sidewalk. Radiant energy may be found in X-rays.
Any energy produced by the sun is referred to as solar energy, nuclear fusion occurs in the sun and produces solar energy.
Therefore, In the sun's core, fusion takes place when the protons of hydrogen atoms forcefully collide and fuse to form helium atoms, hence option D is correct.
Learn more about energy, here:
https://brainly.com/question/21569527
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The amount of the earth's surface covered by oceans is approximately what ?
A: 1/4
B: 1/3
C: 1/2
D:3/4
E: 4/5
pleaseeee hurry
Answer:
3/4
Explanation:
I would have to say this because earth is covered in about 71% of water and 3/4 is closest to that. :)
If you want to make 50mL of a 15% glucose solution, how many grams of glucose do you need to weigh out?
Answer:
49.85
Explanation:
So it's super simple u just have to use the calculator and press 50 minus 15% which is equal to 49.85
If an organism uses mitosis (asexual reproduction) to reproduce. What is the outcome?
A. The offspring are twice as large as the parent
B. The offspring are genetically identical to the parent
C. The offspring developed from a parents fertile egg
D. The offspring have half as many chromosomes as the parent
Answer:
B
Explanation:
I learned this 2 years ago
Which describes one of oxygen's roles in Earth’s atmosphere?
1.allows fuels to burn.
2.forms clouds that produce rain.
3.is the gas that animals exhale.
4.is used by plants to produce food.
Answer: a
Explanation:
Explain the importance of CDK in the cell cycle
Answer: They are important because they help modify different proteins.
Explanation:
The importance of CDK in the cell cycle is that they are important because they help modify different proteins and CDK are important in the regulation of the cell cycle.
What are the importance of CDK?CDKs are important in many reasons as they help in the regulation of the cell cycle. They carry out their function by adding phosphate groups to target proteins. Protein kinases called CDKs (cyclin-dependent kinases) are involved in controlling the cell cycle. The regulatory proteins known as cyclins are responsible for activating the cyclin-dependent kinases. As the cell moves through the cell cycle, the activity of different Cdks rises and then falls.
A cyclin-Cdk complex is created when a particular CDK binds to the associated cyclin. Proteins and other targets are phosphorylated by cyclin-Cdk complexes. Some of these proteins are activated by phosphorylation whereas the others are deactivated. For instance, phosphorylation causes the protein p27 to be broken down. Since p27 is one of the main inhibitors of cell division, low levels of p27 cause cells that aren't dividing to start doing so.
Therefore, The importance of CDK in the cell cycle is that they are important because they help modify different proteins and CDK are important in the regulation of the cell cycle.
Learn more about CDK on:
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