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wolverine [178]
3 years ago
12

Describe a virus and how it's different from a cell?

Biology
1 answer:
lana [24]3 years ago
6 0

Answer:  how a virus differs from a cell...

It doesn’t contain any kind of cytoplasm, cell wall, cell membrane, ribosome or mitochondrion.

It doesn’t have any sort of metabolic enzyme of its own. So, no nutrition system is seen.

It can’t reproduce itself, without any help of the host living cell.

It can be crystallized, centrifuged or diffused.

It doesn’t have any sort of somatic development.

Chemically, its just a fusion of protein and nucleic acid. So, this characters differ a Virus from a living cell.

Explanation:

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Answer:

rain lakes river mountain

Explanation:

rain lakes river mountain are example. put your choices.

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2 years ago
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A terrestrial animal species is discovered with the following characteristics: exoskeleton, system of tubes for taking in oxygen
devlian [24]

Anthropoid

Pretty sure that is right B/C they have a exoskeleton, they are land animals primarily (Oxygen Tubes), they have joints and have two body segments.    

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guapka [62]

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I think that they are small white stars

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3 years ago
An element has a half-life of 30 years. If 20 mg of this element decays over a period of 90 years, how many mg of this element w
Vlada [557]

Answer:

2.5 mg

Explanation:

<em>The half-life of a substance is the time required for one half of the substance to decay. In order words, it is the time it will take for a substance to decay into  half of its initial size.</em>

For a 20 mg element with a half-life of 30 which decays over a period of 90 years;

The first 30 years, 10 mg would have decayed, remaining 10 mg

The second 30 years, the remaining 10 mg would have decayed to 5 mg

The third 30 years, 5mg would have decayed to 2.5 mg.

Hence, in 90 years, 20 mg of the element would <u>remain only 2.5 mg.</u>

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A new disease is discovered in a monkey. It appears to be affecting a several genes in a localized area of cells in the animal.
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