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Wittaler [7]
3 years ago
11

Besides supporting and protecting a cell, the cell membrane __ what enters and leaves the cell??

Biology
1 answer:
dsp733 years ago
6 0

Besides supporting and protecting a cell, the cell membrane regulates what enters and leaves the cell.

I am soo sorry this is 4 hours late!!! Hope this helps!!! :)

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DNA has two strands.If the sequence of the nucleotides of one strand was known,is it possible to use that information to determi
boyakko [2]
Yes. the nucleotides are A, T, G, and C. A and T pair up and G and C pair up. For instance, if your known strand is AGTCAG then the second strand would have to be TCAGTC. Also, if there is a U in the strand, it takes the place of T. so the original strand would be AGTCAG and the unknown would have to be UCAGUC.
3 0
3 years ago
Identify each event as the result of mechanical weathering or chemical weathering.
kow [346]

<h3><u>The following events are identified as chemical weathering:</u></h3>
  • The minerals in a marble statue react with water to form acids and pores in the structure.
  • The rocks in a region are streaked orange after being exposed to repeated rains.

<em><u>Reason: </u></em>

When the weathering process occurs due to <em>chemical reaction</em>, then it is considered as chemical weathering.

In <em>the first case</em>, minerals of marble statue are <em>reacting</em> with water to cause weathering. In the <em>second case</em>, due to the <em>acidificaion reaction</em>, the change of the color has happened after exposure to the repeated rains.

<h3><u>The following events are identified as Mechanical weathering:</u></h3>
  • A piece of rock crumbles after being constantly thrashed by strong waves.
  • Industrial runoff forms cracks in a rocky structure in its path.

<em><u>Reason:</u></em>

When the rock is broken into simple pieces <em>without any chemical reaction </em>it is considered as mechanical weathering.

In the <em>first cause</em>, due to the <em>abrasion</em> caused by the strong waves, weathering has happened, in the <em>second case</em> industrial run off may be of varying temperature and thus may cause <em>heating or cooling</em> of the rock and causes weathering.

8 0
3 years ago
Where do many of the world's deserts lie?
Jlenok [28]

Answer:

Most of the world's deserts are located near 30 degrees north latitude and 30 degrees south latitude, where the heated equatorial air begins to descend

Explanation:

8 0
3 years ago
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Plant meristems produce new cells by which of these processes?
OverLord2011 [107]

Answer:

mitosis

Explanation:

because mitosis is a continuous cell division process which occur in the somatic cell

5 0
2 years ago
A scientist performed an experiment to test her hypothesis that a disease in horses was caused by a deficiency in an important m
ycow [4]
<span>a. ) Design an experiment to test the new hypothesis</span>
4 0
3 years ago
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