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dimaraw [331]
3 years ago
6

Why is carbon the key element in forming structural componets of cells

Biology
1 answer:
densk [106]3 years ago
8 0
Carbon is a very special and unique atom which can form 4 covalent bonds with other atoms.
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Describe in detail the steps of a light dependent reaction
Levart [38]

Answer:

The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH.

Here are the basic steps:

Light absorption in PSII. ...

ATP synthesis. ...

Light absorption in PSI. ...

NADPH formation.

Explanation:

3 0
3 years ago
The antiparallel arrangement within DNA molecules refers to Select one:
mylen [45]

Answer:

c. one helix strand that runs from the 5' to 3' direction and the other strand runs from the 3' to 5' direction.

Explanation:

A DNA molecule has <em>two strands of nucleotides with a sugar phosphate backbone each, but orientated on the opposite direction </em>allowing for the base pairs to complement one another, making it a more stable structure. <em>When two biopolymers run parallel to each other but with opposite directionality (alignment) we have an antiparallel arrangement.</em>

I annexed an image of the DNA structure.

I hope you find this information useful and interesting! Good luck!

4 0
3 years ago
Suppose a human blood cell containing a 0.9 percent solute concentration were put into a container of 0 percent solute solution
Vladimir [108]

Answer and explanation:

If a human blood cell with a 0.9% solute concentration were to be put into a container of 0% solute solution, the cell would get BIGGER.

<u>The cell contains a </u><u>more concentrated solution</u><u> than the solution in the container</u>. The difference in concentration would produce an <em>osmotic gradient</em> that would cause water from the container to get inside the cell to even the concentrations - this is going to make the cell much bigger because the entering water would bloat the cell.

In this example, the solution in the container is hypotonic in relation to the cell, while the solution inside the cell is hypertonic in relation to the solution in the container. This is why the water will be moving from outside of the cell to the inside of the cell.

6 0
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Vlad1618 [11]

Answer:

The vision remains unaffected.

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The cat was stuck in the neighbor's cellar with enough food and water. The cat was stuck in the basement with pitch-black but this does not affect the vision of cat. Cats are nocturnal animals and has large amount of rod cells that enable them to see at night. Thus, her vision remains unaffected.

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Frequently, a group of related species will each have a unique courtship ritual that must be performed correctly for both partne
Lesechka [4]
Behavioral Isolation
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