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VashaNatasha [74]
3 years ago
13

Can u please help me...!!!!! thanks!!!!!!

Biology
1 answer:
Lorico [155]3 years ago
6 0
Higher, lower is correct I believe. 
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21. What is genetic drift?
Alexus [3.1K]

B.

Genetic drift is the change in the frequency of an existing gene variant in a population due to random sampling of organisms.

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3 years ago
Explain how the parts of a plant function together during both primary and secondary growth.
mash [69]

Answer :Meristems contribute to both primary (taller/longer) and secondary (wider) growth.

Explanation:

Primary growth is controlled by root apical meristems or shoot apical meristems, while secondary growth is controlled by the two lateral meristems, called the vascular cambium and the cork cambium.

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3 years ago
If an organism has 32 chromsomes in its somatic cells it comes from an egg cell that contains how many chromosomes
xxMikexx [17]
The Egg Cell as 23 Chromosomes 
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4 years ago
What is the function of the cell membrane
swat32
It's pretty straight foward it controls what gets in and out

Cell Membrane - The membrane of the cell forms an outer shell that protects it. It's function is to be semi-permeable, which means that it separates the cell from outside elements and only allows certain molecules in.

Centrosomes<span> - Centrosomes organize microtubules, which are like hollow rods that give the cell its support and shape.</span>

Centrioles -<span> Centrioles are cylinders made of proteins that are found in a cell's centrosome.</span>

<span>Cytoplasm </span>- This is the jelly-like substance that makes up the inside of the cell. It's not an organelle, but a material that can be found within the membrane.

<span>Endoplasmic Reticulum </span>- The endoplasmic reticulum, or ER for short, forms the transport system for the important proteins in the cell, like RNA. ER can be split into two groups: smooth ER and rough ER.

Golgi Complex<span> - The Golgi complex, which is also known as the Golgi apparatus and named after the person who found it, is like the post office or packing center of the cell. It prepares proteins that need to be shipped off to specific destinations.</span>

<span>Lysosomes </span>- Lysosomes are enzyme-filled sacs that digest nutrients and cell wastes.

<span>Mitochondria </span>- This organelle has an important job. It keeps the rest of the cell going by supplying energy in the form of adenosine triphosphate (or ATP).

<span>Nucleus </span>- The nucleus is a soft sac of the cell that has the responsibility of carrying its genetic code (also known as DNA).

<span>Nucleolus </span>- Within the nucleus is another nucleus, or nucleolus, where RNA is formed. RNA carries the messages or instructions that DNA provide.

Ribosomes<span> - After RNA leaves the nucleolus and nucleus, it goes through the endoplasmic reticulum to the ribosomes, where protein synthesis takes place.</span>

7 0
4 years ago
Read 2 more answers
NADH and FADH2 are both electron carriers that donate their electrons to the electron transport chain. The electrons ultimately
maria [59]

Answer:

Explanation:

NADH and FADH2 are both electron carriers of the electron transport chain. NADH gives up its electrons starting from Complex I, which has a higher energy level compared to other complexes. Energy is given off to pump protons across the membrane by the time electrons are transferred to ComplexIII. More electrons are pumped across the membrane as electrons move to Complex IV. Because NADH commenced giving up its electrons from Complex I (higher energy level complex), more protons are pumped across the membrane gradient, which enables ATP synthase with more power to produce 3ATP molecules per NADH molecule.

On the other hand, 2 molecules of ATP are generated by FADH2 because it starts by giving up its electrons to ComplexII. It missed a chance to pump protons across the membrane when it passed Complex I. By the time the electrons reach Complex IV, less protons have been pumped. The lesser the protons to power ATP synthase, the lesser the ATP molecules produced.

8 0
4 years ago
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