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natima [27]
3 years ago
15

A scientist engineers a virus that contains the gene thought to provide bacterial resistance to the antibiotic vancomycin. The s

cientist then takes a culture of bacteria and divides it in two. One portion is allowed to incubate with the previously mentioned virus, while the other is not. Both bacterial cultures are then placed onto petri plates whose media contain vancomycin. Only the culture grown previously with viruses shows growth of bacterial colonies. How did these bacteria FIRST come to have resistance to this antibiotic? Selected Answer: Transformation Bifurcation Transduction Transformation Conjugation
Biology
1 answer:
ikadub [295]3 years ago
3 0

Answer:

Transduction

Explanation:

Bacteriophages (or phages) are viruses known for its ability to contaminate and become a parasite in a bacteria. These phages can pass its DNA from a single bacterium to another bacterium, via a means referred to as genetic transduction.

This is believed to be the centre route through which bacteria evolve and possess the antibiotic resistance and virulence factors that increases the formation of new and an increasingly more pathogenic strains.

The mechanisms of genetic transduction includes generalized and specialized transduction.

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klemol [59]

Answer:

By increasing blood glucose, fatty acid, and amino acid levels

Explanation:

Cortisol, corticosterone, and cortisone are the glucocorticoids released by the adrenal cortex and serve to impart resistance to stress. These hormones stimulate protein breakdown (mainly in muscle cells), gluconeogenesis and lipolysis and thereby increase the concentration of amino acids, glucose and fatty acids in blood.

The amino acids are used by cells for synthesis of new proteins or for synthesis of ATP. Glucose is also used by cells to produce ATPs.

Glucocorticorticoids increase the sensitivity of blood vessels for hormones which in turn stimulate their constriction. The vasoconstriction raises blood pressure. The process of vasoconstriction resumes the normal range of blood pressure which is otherwise dropped by some emergency conditions such as injury and severe loss of blood.

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2 years ago
Menkes disease is a recessive sex-linked disorder that affects copper levels in the body, leading to a copper deficiency. The Pu
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Answer:

the answer is A

Explanation:

i got it right on a test

5 0
3 years ago
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Complete each statement with the correct term.
KonstantinChe [14]

Answer:

gymnosperm and angiosperm

Explanation:

i got it right on the quiz

6 0
3 years ago
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Science 7 Grade 7.
ikadub [295]
I think the answer would be 52cm:24cm ratio but don't take my word for it
6 0
3 years ago
Adherens junctions ______________________. (a) can be used to bend epithelial sheets into tubes. (b) are most often found at the
Paladinen [302]

Answer:

(a) can be used to bend epithelial sheets into tubes.

Explanation:

The adherens junctions are cell-cell adhesions localized in places exposed to abrasion or mechanical stress, close to the apical membrane in epithelial cells is one of these locations. Some of their functions are the initiation and stabilization of cell-cell adhesion, <em>they join the actin cytoskeleton to the plasma membrane to form adhesive contacts between cells that contribute to the folding and bending of epithelial sheets,</em> therefore they can mediate adhesion and signaling.

I hope you find this information useful and interesting! Good luck!

8 0
3 years ago
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