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natita [175]
2 years ago
7

A plasmid _____________________________ . A. can confer antibiotic resistance to a bacterium. B. is a single-stranded circular D

NA molecule that can undergo horizontal transfer among bacteria. C. is a tool designed in the lab and never found in naturally occurring bacteria. D. always becomes part of the bacterial chromosome during transformation.
Biology
1 answer:
hodyreva [135]2 years ago
7 0

Answer:

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.

Thus, option A is the correct answer.

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A new sewage pipe empties raw sewage into a nearshore coral reef. Which graph shows the expected immediate impact of this change
mel-nik [20]

Answer:

B

Explanation:

I'm pretty sure that's the answer because the others seem very odd for a population scale when a new pipe is inserted.

8 0
2 years ago
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An organism inherits hits genetic instruction from the
enyata [817]

Answer:

its parents.

Explanation:

its parents hold a dna code

8 0
2 years ago
In a nucleotide, the nitrogenous base is attached to the sugar's _____ carbon and the phosphate group is attached to the sugar's
LUCKY_DIMON [66]

Answer:

A. 1' ... 5'

Explanation:

The pentose sugars present in nucleotides have five-carbon structures. Other components of a nucleotide are a phosphate group and a nitrogenous base. The nitrogenous base in a nucleotide can be a purine or pyrimidine. The purine bases are covalently joined to the 1' carbon atom of the pentose sugar at their N-9. The bond between the nitrogenous base and a pentose sugar is called the N-beta glycosyl bond.

Similarly, N-1 of a pyrimidine base is covalently linked to the 1' carbon of the pentose sugar. The phosphate group of a nucleotide is bonded to the 5' carbon of the pentose sugar.

8 0
2 years ago
The pmi for remains of a body enclosed in a plastic bag could best be estimated by
scoundrel [369]
The post mortem interval of a body enclosed in a plastic bag could be best estimated by the insects found in the body, in that case forensic science need to listen to what those little creatures have to say, insects could tell if the body has been moved from the crime scene, how long it´s been in an specific place, and how long it´s been since death until found, every group of insects can tell something different, from worms, arachnids to flyes, each one of them has a time to get into the body, so it could tell you for how long it´s been dead.
5 0
2 years ago
What would be direct consequences from decreasing angiosperm biodiversity? Select all that apply. extinction of animals balancin
love history [14]

Answer:

reduction in potential medicines

reduced food supply

Explanation:

The direct consequences of a decrease in angiosperm's biodiversity is a reduction in potential medicines and food supply.

Angiosperm biodiversity (the flowering plants) act as a source of food to several living organisms, including human. This is evident in the practice of farming by humans. Different categories of consumers in the ecosystem depends largely on flowering plants for their food either directly or indirectly.

They also serve as a source of medicine. For example, chloroquine which use to be the major drug against the treatment of malaria was extracted from a flowering plant known as <em>Chinchona pubescens.</em>

<em>Several species of flowering plants remains in the wild whose usefulness are yet to be researched. They represent a source of future food and medicine for man and animals.</em>

<em>Hence, if the diversity of flowering plants is reduced, it is going to have direct consequence of reduction in potential foods and medicine.</em>

3 0
2 years ago
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