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aleksklad [387]
3 years ago
12

Please help, thank you!

Biology
1 answer:
koban [17]3 years ago
4 0

Answer:

regulates which materials enter and leave the cell

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Which of the following are purines?
Harman [31]

Answer:

1. Guanine and adenine

7 0
2 years ago
What are two of the products of the Krebs cycle?
Nastasia [14]

Answer: Option B) NADH and FADH2

Explanation:

The purpose of the Krebs cycle is to convert potential chemical energy into metabolic energy in the form of ATP that can be used by the body.

Hence, the products of the Krebs cycle include:

- 3 molecules of NADH,

- 1 molecule of FADH2,

- 1 molecule of GTP,

- 2 molecules of CO2

Thus, NADH and FADH2 are two of the products of Krebs cycle.

8 0
3 years ago
In the phrase "survival of the fittest," the term "fittest" refers to:
nalin [4]

Answer:

A

Explanation:

From what I know this could be wrong, but in the four stages of natural selection, the first step is overproduction, the second step is adaptation, and the third step is competition or survival of the fittest. This means that only the organisms with the best adaptations for their surroundings will survive. COULD BE WRONG SORRY IF IT IS

7 0
3 years ago
In a study of proteins mediating cell membrane transport, microbiologists measure current versus time through the cell membranes
MrRa [10]

Answer:

Q(0) = 0C, Q(1) = 264nC, Q(2) = 952C Q(3) = 2088nC, Q(4) = 3696C Q(5) = 5800nC

Explanation:

I = 4t³ + 200t² + 60t

But charge of an object =》 Q = IT

Charge of an object is the product of the current and the time in which the current passes through the membrane.

When t = 0

Q = 4(0)³ + 200(0)² + 60(0) = 0C

When t = 1

Q = 4(1)³ + 200(1)² + 60(1) = 264nC

When t = 2

Q = 4(2)³ + 200(2)² + 60(2) = 952nC

When t= 3

Q = 4(3)³ + 200(3)² + 60(3) = 2088nC

When t= 4

Q = 4(4)³ + 200(4)² + 60(4) = 3696nC

When t = 5

Q = 4(5)³ + 200(5)² + 60(5) = 5800nC

3 0
4 years ago
Read 2 more answers
A type of organism composed of one or more cells containing a membrane‐bound nucleus, specialized organelles in the cytoplasm, a
ivann1987 [24]
The answer: eukaryote
8 0
3 years ago
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