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RoseWind [281]
3 years ago
9

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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HELP MEH PIZZAZZ. I WILL GIVE 20 points .
andreev551 [17]

The anwser is number 2 I think,



Hope it helps!

4 0
3 years ago
Read 2 more answers
Both Duchenne muscular dystrophy and color blindness are caused by recessive alleles. DMD, unlike color blindness, nearly always
Ronch [10]

Answer: Although both are X-linked recessive conditions, and therefore more likely in males, with the single X-chromosome. The recessive allele in colour blindness occurs at a higher frequency in the population and is a mild condition. Thus colour blindness does occur to a lesser extent in females because it needs the double recessive condition. DMD is a severe, disabling condition with a limited lifespan, and recessive allele frequency much lower, so the double recessive condition in females is very rare.

Explanation: DMD is an X-linked recessive, “nearly always in males” suggest that it also occurs due to a new mutation or some rare condition e.g. double recessive from an affected father and carrier mother, or inactivation of the normal gene in a heterozygote. It is also found that the defective allele is not completely recessive and that female carriers may exhibit mild to moderate effects.

colour blindness is polygenic, although the genes are all X-linked. It is more common in males than females. Females can carry two recessive alleles and so express the phenotype, but this is uncommon because the frequency of the recessive gene is low.

There are similarities in that both are X-linked recessives, therefore commonly expressed in males, who only have one X chromosome. The gene frequency of the colour blindness recessive is much higher than that of DMD, so the double recessive condition, which affects females, is more likely to be seen with colour blindness. In addition, DMD is a severe condition associated with disability and limited lifespan, which reduces the probability of mating between an affected male and carrier female

6 0
3 years ago
Climate change could impact many species from which we get useful products. what resources do we risk losing due to climate chan
IgorC [24]

we risk losing due to climate change is food.  Thus option C is correct.

<h3>What are the impact of climate change on species ?</h3>

Climate is the crucial factor  for all living organism, as it determine whether an organism is going to survive or not.  

Global warming is one of the major factor resulted from release of green house gases.

It leads to  habitat loss, change the migration capabilities, alter the  competitive relationships.

The fate of the species completely depend on climate change, those who are able to move new area with new climatic condition they will meet their physical, biological, and climatic needs.

Thus option C is correct.

Learn more about climate change , here:

brainly.com/question/12346202

#SPJ1

7 0
1 year ago
Although the foxp2 amino acid sequence is highly conserved, humans have two unique amino acids that chimpanzees don't have. thes
PolarNik [594]

The answer is language. Humans have a high degree of language acquisition and complexity compared to chimpanzees due to foxp2 proteins. Foxp2 are transcription factors that are significant in cell proliferation. The difference of 2 in 700 amino acids in the sequence makes the protein to be differentially regulated between the two species.






4 0
3 years ago
Read 2 more answers
Explain the processes of photosynthesis and cellular respiration
Anuta_ua [19.1K]

Explanation:

photosynthesis converts carbon dioxide and water into oxygen and glucose.glucose is used as food by the plant and oxygen as a by-product.

cellular respiration convert oxygen and glucose into water and carbon dioxide water carbon dioxide a byproduct and ATP is energy that is transformed from a process.

6 0
3 years ago
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