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tatuchka [14]
3 years ago
15

Which of the following reproduces by injecting its genetic material into a host cell ?

Biology
1 answer:
jarptica [38.1K]3 years ago
8 0

Answer:

B. Virus

Explanation:

Once attached to a host cell, a virus injects its nucleic acid into the cell. The nucleic acid takes over the normal operation of the host cell and the host cell produces multiple copies of the virus.

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The four nitrogenous bases are also referred to as
sattari [20]

Answer:

i believe the answer is 3

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Explanation:

3 0
3 years ago
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When did arundant fossil evidence first appear in the geologic record
Delvig [45]
<h2>540 million years ago </h2>

Paleozoic.

Era immediately follows Precambrian It lasted about 4.5 billion years.

When did abundant fossil evidence first appear in the geologic record.

540 million years ago.

7 0
3 years ago
An energy pyramid shows the amount of_______<br> available at each feeding level in an ecosystem
Amanda [17]

Answer:

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An energy pyramid shows the amount of energy available at each feeding level in an ecosystem.

5 0
3 years ago
This question is 15 points. The same amount of heat is needed to make a metamorphic rock as is needed to make an igneous rock. T
Alborosie

Answer:

False

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7 0
3 years ago
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Anton [14]
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Diffusion happens because there’s a concentration gradient between the dye and the water, therefore dye molecules moves to the water area. But note that this is only the net movement of the molecules, which means, even if more molecules are moving towards water, there are still some dye molecules that are moving in the opposite direction.

So, after the concentration is equal, the motion of the dye molecules does not stop, they still move in random directions, but there’s no net movement instead, as there’s no concentration gradient. Remember molecules are always moving in all directions , it just depends on whether there’s a net movement or not. If there’s no net movement, the amount of molecules moving to each and every direction is always equal.
8 0
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