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3 years ago

RNA viruses require their own supply of certain enzymes because

Biology

1 answer:

Licemer1 [7]3 years ago

7 0

Answer: The correct answer is option b.

Explanation:

RNA viruses have RNA as genetic material whereas the host cells usually have DNA as genetic material.

So, in order to integrate its genome with host DNA, the virus must form DNA from RNA, that is, reverse transcription.

It is the process by which DNA is formed using RNA as a template strand.

However, reverse transcriptase (enzyme which catalyzes reverse transcription) is usually not present in host cells.

Thus, RNA viruses carry their own set of enzymes which help in the replication of viral genome and its recombination with host DNA as host cells lack these enzymes.

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Use the scenario to answer the question.

Murljashka [212]

Answer:

fruit weight

Explanation:

In an experiment, the dependent variable is the variable that responds to the changes made to the independent variable. In other words, the dependent variable, as the name implies, is DEPENDENT on another variable called independent variable. The dependent variable is the variable that is measured or recorded by the experimenter during the experiment.

In this case where a student is studying the effect of fertilizer on fruit growth. He uses 6 tomato plants, which were given different concentrations of fertilizer (independent variable). After the experiment, the weight of the tomato fruit were measured. This means that the FRUIT WEIGHT is the dependent or responding variable.

5 0

3 years ago

Can someone explain this diagram ill give branilest if you give correct answer

sdas [7]

Answer:

What's a brainliest???

7 0

2 years ago

The hierarchy of life extends past individual organisms. Which of the following is the correct sequence, from least inclusive to

Anna71 [15]

Answer:

E. Population - community - ecosystem - biosphere

Explanation:

Population is the set of organisms of the same species

Community is where organisms of different species live and communicate together

ecosystem is a biological system where ocommunities and environment are present.

Biosphere is where all ecosystem are present. (let´s say, the earth)

3 0

3 years ago

Kingdoms are a more specific (less broad) category in the taxonomic hierarchy.

gregori [183]

Answer:

Explanation:

According to the taxonomical hierarchy, the kingdom is the highest category in biological classification. It is a group of closely related organisms.

Kingdom - Phylum -Class - Order -Family - Genus -Species.

4 0

2 years ago

Read 2 more answers

In fruit flies, the allele for white eyes is recessive to the allele for red eyes. In a generation of fruit flies, 45 males with

Aleksandr [31]

1 is C - see first attachment. Genotypes with Y's represent males, and big R represents red eyes, while little r represents white eyes. For example XRxr is a heterozygous (red-eyed) female, and XrYr is a homozygous white-eyed male.

2 is B because the absence of functional proteins and some ribosomes due to the mRNA strand is not as detrimental as the loss of the entire cell.

3 is B. (The insertion of 3 base pairs into a genetic sequence is the length of a single codon, meaning that only one amino acid in the entire polypeptide was added)

7 0

3 years ago