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valentinak56 [21]
3 years ago
5

A student wants to test the effect of nitrogen rich fertilizers on the growth of rose bushes. Which of the following is a variab

le that must be kept constant?
Growth of the rose bush
Amount of water the rose bush receives
The use of nitrogen rich fertilizer
Biology
1 answer:
Alchen [17]3 years ago
7 0
I believe the answer is the second one.
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The correct answer will be option A.

Explanation:

The bacteria organize its genetic material in the single circular chromosome suspended in the cytosol along with additional circular double-stranded DNA molecule called plasmid.

The plasmid is present as a separate structure in the cytoplasm which performs important functions during stressful conditions in the bacteria like providing antibiotic resistance to the bacteria, formation of filial factors during conjugation and many others.

The plasmid which confers resistant to the bacteria is known as the R-plasmid. The R-plasmid consists of r-determinants which confers antibiotic resistance to the bacteria and resistance transfer factor (RTF) which helps in plasmid transfer.

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Explanation:

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