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Firlakuza [10]
3 years ago
15

A biologist develops a new drug that seems to dramatically slow the onset of symptoms resulting from HIV infection. Close monito

ring of HIV-infected cells reveals that the viral proteins are in the form of long polyproteins. The biologist most likely developed a _____
Biology
1 answer:
Marina86 [1]3 years ago
8 0

Answer:

The correct answer is: Protease inhibitor.

Explanation:

A protease inhibitor is a type of antiviral drug that is used mostly to treat AIDS and Hepatitis C.

Protease inhibitors work by blocking proteolytic cleavage of protein precursors so they can impede viral replication.

Protease inhibitors are very successful in the treatment of these diseases but they can have some side effects, like generating diabetes and kidney stones.

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Explain the structure of a chromosome (please)
Paha777 [63]

Answer:

Chromosome structure consists of a long arm region and a short arm region connected at a central region known as a centromere. The ends of a chromosome are called telomeres. Duplicated or replicated chromosomes have the familiar X-shape and are composed of identical sister chromatids.

Explanation:

7 0
3 years ago
1. Key Concept List the
Ipatiy [6.2K]
<h2>DNA </h2>

Explanation:    

1) Experiment done by Griffith:

  • Griffith used two related strains of bacteria, known as R and S
  • R bacteria were nonvirulent, meaning that they did not cause sickness when injected into a mouse whereas mice injected with live S bacteria developed pneumonia and died
  • Griffith tried injecting mice with heat-killed S bacteria (that is, S bacteria that had been heated to high temperatures, causing the cells to die), the heat-killed S bacteria did not cause disease in mice
  • When harmless R bacteria were combined with harmless heat-killed S bacteria and injected into a mouse, not only did the mouse developed disease and died, but when Griffith took a blood sample from the dead mouse, he found that it contained living S bacteria
  • Griffith concluded that the R-strain bacteria must have taken up what he called a transforming principle from the heat-killed S bacteria, which allowed them to transform into smooth-coated bacteria and become virulent

2) Experiment done by Avery:

  • Avery, McCarty and MacLeod set out to identify Griffith's transforming principle
  • They began with large cultures of heat-killed S cells and, through a long series of biochemical steps progressively purified the transforming principle by washing away, separating out, or enzymatically destroying the other cellular components
  • These results all pointed to DNA as the likely transforming principle but Avery was cautious in interpreting his results
  • He realized that it was still possible that some contaminating substance present in small amounts, not DNA, was the actual transforming principle

3) Experiment done by Hershey and Chase:

  • Hershey and Chase studied bacteriophage, or viruses that attack bacteria
  • The phages they used were simple particles composed of protein and DNA, with the outer structures made of protein and the inner core consisting of DNA
  • Hershey and Chase concluded that DNA, not protein, was injected into host cells and made up the genetic material of the phage

8 0
3 years ago
What are chromatids and how do they differ from chromosomes
Molodets [167]
Chromatids are only called as chromatids when they are sister chromatids, meaning that when chromosome have two double stranded DNA attached together, each of the double stranded DNA is a sister chromatid, and while the whole thing (the two sister chromatids that are attached together) is called a chromosome.

So after the DNA has been replicated, the chromosome consist of 2 sister chromatids, attached to each other at their centromere.

Overall, sister chromatid is one of the two double stranded DNA in a replicated chromosome, and chromosome is the whole "X" shape that we see. For example, in humans, after the S phase of interphase in the cell cycle, we have 46 chromosomes, with 92 chromatids, since each chromosome is an "X" shape, by having two sister chromatids.

Hope this helps!
7 0
2 years ago
Does radiometric dating produce exact results, why or why not? 
Nataly [62]
No, it is impossible for it to produce the exact result
7 0
3 years ago
Read 2 more answers
A population is a population is a group of individuals of different species living in the same place at the same time. all indiv
Julli [10]
A group of individuals of the same species that interact will find a mate and cross breed and produce a stronger species to survive they're environment. per Darwin's law..
3 0
3 years ago
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