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Gnesinka [82]
4 years ago
7

Are viruses alive? This question is debated among scientists throughout the world. Consider the following passage. Scientific re

searchers discovered agents that behaved like bacteria causing diseases such as rabies and hoof-and-mouth, but were much smaller. At this time it became the general view that viruses were biologically "alive." This perception changed in 1935 when the tobacco mosaic virus was crystallized and scientists demonstrated that the particles lacked any mechanisms necessary for metabolic function. It was determined that viruses consisted of a nucleic acid, DNA or RNA, surrounded by a protein shell and the scientific view changed: viruses are complex biochemical mechanisms but not alive. According to the passage, the MOST IMPORTANT evidence supporting the opinion that viruses are not alive is that they A) cause disease. B) contain DNA or RNA. C) are much smaller than bacteria. D) do not have a cellular structure.
Biology
2 answers:
umka2103 [35]4 years ago
6 0
No, viruses are not alive.

tatuchka [14]4 years ago
5 0

Answer:

im sure it is d like that person said bc i took the test

Explanation:

lol idk why that woman saw (a.b.c.d.) and just said 'nO, vIRusEs ArE NOt AlIvE"

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Answer:

Explanation:

Aldehydes and ketones are organic compounds which incorporate a carbonyl functional group, C=O. The carbon atom of this group has two remaining bonds that may be occupied by hydrogen or alkyl or aryl substituents. Chain numbering normally starts from the end nearest the carbonyl group.

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An mRNA sequence reads: GAA/GCU/AUA/CUA/UGU. What would the effect on the amino acid be if the second codon read GCA instead, an
Murrr4er [49]

Answer:

D) Silent mutation on second codon, third amino acid changed from ILE to ASN.

Explanation:

Silent mutations are usually point mutation where you change one nucleotide. Since, the nucleotide changed is the third position, it does not affect the protein being manufactured (it will still put the amino acid Ala) [look up the codon redundancy on youtub.e to understand how awesome nature is!]

On the other hand, the other mutation introduced is Missense mutation where a different Amino acid is added due to change in codon (goes from ILE to ASN).

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3 years ago
What would happen to a single-celled life form if the information handed down to offspring was always copied perfectly? (Select
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For a single-celled life form that the information handed down to offspring, we would see every generation would be a carbon copy of the one single-celled life form.This is further explained below.

To find the completion   we need to know more about a single-celled life

<h3>What would happen to a single-celled life form if the information handed down to offspring was always copied perfectly?</h3>

Generally, A single-celled organism, also known as a unicellular organism, is an organism made up of only one cell.

In conclusion, Every generation would be a carbon copy of the one before it.

Read more about Cell

brainly.com/question/2622341

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4 years ago
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