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Alina [70]
3 years ago
5

(20 POINTS) Which statement BEST explains how RNA polymerase knows where to start & stop making an RNA copy of DNA?

Biology
1 answer:
monitta3 years ago
6 0

Answer:

The enzyme only binds to regions of DNA known as promoters, which have specific base sequences

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!!!!!!!!PLEASE HELP!!!!!!!!!!!!!!!!!Why are rivers still able to flow during drought??????????
Lelu [443]

Answer:

Probably because a drought does not mean that water disappears.

Turning off the faucet doesn't mean that water can't go down the drain, right?

6 0
4 years ago
A student prepared a slide of pollen grains from a flower. First the pollen was viewed through the low-power objective lens and
bearhunter [10]

Answer:

(2) low power: 100 small pollen grains

high power: 25 large pollen grains

Explanation:

Compound light microscopes are devices used to greatly magnify objects. They have several objective lenses, a low-power lens magnifies 10 times (10X) the objects, and the high-power lens magnifies them 40 times (40X).

For that reason, when observing the pollen grains with the high-power lens the student will see them bigger than with the low-power lens. However, the field of view (the visible area through a lens) is reduced when a higher power lens is used, so fewer pollen grains will be seen.

The answer therefore is the option of higher number of pollen grains of small size for the low-power lens, and lower number of pollen grains of larger size for the high-power lens.

3 0
3 years ago
Use the drop-down menus to label each structure.
Nat2105 [25]

Answer:

1. Cell wall/Cell membrane

2. Cytoplasm

3. Ribosomes

8 0
4 years ago
The structure of a human skin cell differs from that of a human muscle cell. The two cells most likely have different __________
AnnyKZ [126]

Answer:

The correct answer would be - functions.

Explanation:

The structure of the skin cells and muscle cells are different and have a different number of cell organelles on their role in the body. Skin cells are a special type of cells that keep on shedding and replaced by new ones therefore they need less energy and have many mitochondria.

In contrast, muscle cells have different structures as they need a high amount of energy to make movements and therefore have lots of mitochondria in the cell.

7 0
3 years ago
Explain how active transport is different from osmosis
nevsk [136]

Osmosis is the net movement of water down the concentration gradient, whereas active transport is the movement of substances against the concentration gradient. • Osmosis does not require energy, whereas active transport does.

5 0
3 years ago
Read 2 more answers
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