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belka [17]
3 years ago
7

A particle can infect humans and make them sick. It attaches to a host cell and injects its RNA, which the host uses to make pro

teins for the particle. This particle cannot reproduce on its own and can only copy itself by using the machinery of the host.
Biology
2 answers:
Dmitry [639]3 years ago
5 0

Answer:

Virus

Explanation:

Viruses are particles that are not considered alive because they can not reproduce themselves. They need a host to multiply. They adhere to the cell wall and inject RNA with the necessary information to form identical copies. They force the host to use their own machinery to synthesize multiple identical copies.

kherson [118]3 years ago
3 0
I'm sure the answer is Viruses, but if your looking for something specific I don't think I can help you with that.
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I suppose the yellow peg is facing the green peg, in which case the green peg must be guanine.

The bases are associated in pairs. In each pair there is always a purine associated with a pyrimidine. The association is by weak bonds: the hydrogen bonds, two bonds for an AT pair; three links for a GC pair. When we know the sequence of one strand we can deduce the sequence of the other strand. The two strands are oriented opposite to the 3 'and 5' ends (the strands are called antiparallel).

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3 years ago
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timofeeve [1]

Answer:

Explanation:

Microevolution is a change in the frequency of gene variants, alleles, in a population, typically occurring over a relatively short time period.

Population genetics is the field of biology that studies allele frequencies in populations and how they change over time.

Allele frequency refers to how common an allele is in a population. It is determined by counting how many times the allele appears in the population then dividing by the total number of copies of the gene.

\text{Frequency of allele }AFrequency of allele Astart text, F, r, e, q, u, e, n, c, y, space, o, f, space, a, l, l, e, l, e, space, end text, A ==equals \dfrac{{\text{Number of copies of allele }A \:{\text {in population}}}}{\text{Total number of }{\text{copies of gene in population}}}  

Total number of copies of gene in population

Number of copies of allele Ain population

​  

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The gene pool of a population consists of all the copies of all the genes in that population.

4 0
3 years ago
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N76 [4]

Answer:

I believe the answer is #3, chemical bonds.

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3 years ago
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Answer:

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8 0
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