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Andrei [34K]
3 years ago
13

hich cell structure is the gatekeeper, controlling what goes in and out of the cell? A) c - nucleus Eliminate B) e - vacuole C)

a - cell membrane D) b - endoplasmic reticulum
Biology
1 answer:
andrezito [222]3 years ago
8 0
<span>A) c - nucleus Eliminate</span>
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Provide the complementary DNA for the following DNA sequence:<br> A T G C T A G G G T A A T T C G
salantis [7]

Answer:

T A C G A T C C C A T T A A G C

Explanation:

A = T and T = A

Remeber Apple goes with the Tree

C = G and G = C

Remember Car goes in the Garage.

7 0
3 years ago
Yanni made a chart to compare the strong and weak forces. Which best describes Yanni’s error? Only the weak force is active in t
cluponka [151]

Answer: Option (d) is the correct answer.

Explanation:

Nucleus of an atom consists of protons and neutrons. Protons are positively charged and neutrons have no charge. So, due to the like charges of protons there occurs electrostatic force of repulsion inside the nucleus of the atom.

But due to similar number of neutrons and protons a force that is able to bind both of them together is known as strong nuclear binding energy.

This force is strong enough that it is able to overcome electrostatic force of repulsion. But when there is great difference in the number of protons and neutrons then binding force is not strong enough.

Hence, the atom becomes unstable and undergoes radioactive decay. So, this means weak forces are responsible for radioactive decay.

Thus, we can conclude that the statement which best describes Yanni’s error is that the strong force is responsible for radioactive decay.

8 0
3 years ago
Read 2 more answers
When growing, as a cell gets bigger, what happens to its surface area to volume ratio?
marysya [2.9K]

<u>Answer</u>:

Surface area to volume ratio decreases.

<u>Explanation</u>:

When the cell enlarges beyond its capacity, it fails to supply enough material that can cross the membrane sooner so as to occupy the cellular volume. Hence the diffusion rate also decreases so as the ratio. The cell carry out its various functions to sustain through diffusion when diffusion rate is low it will ultimately affect the ratio. Bigger size affects the diffusion of the material to the out of the cell. as we know the diffusion occurs across the surface of the cell.

6 0
2 years ago
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The theory of plate tectonics explains the movement of the plates by convection cells in which of
telo118 [61]
Upper mantle I’m pretty sure !
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3 years ago
How many species go extinct in an average day?
raketka [301]
 <span>150-200 species of plant, insect, bird and mammal become extinct every 24 hours., according to the Scientist Estimate. </span>
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3 years ago
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