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ehidna [41]
3 years ago
12

The virus that causes mumps in humans is composed of a protein outer shell containing a core of DNA. The virus that causes the f

lu in humans is composed of a protein outer shell containing a core of RNA. Vaccines that are effective against mumps work efficiently year after year. Vaccines that work against the flu must be revised and changed every year. What accounts for the difference in the effectiveness of these two vaccines?
Biology
2 answers:
lana [24]3 years ago
7 0

Answer:

I agree with this person ^^

Explanation:

saveliy_v [14]3 years ago
3 0
Flu vaccines need to be revised and changed every year because the flu virus constantly mutates. Flu viruses can change in two ways: drift or shift. Antigenic drift occurs when genes of the virus slowly change during replication until the immune system no longer recognizes it. On the other hand, antigenic shift occurs when a major change in the virus happens. This usually leads to a totally different kind of virus. This is what happened during the H1N1 scare in 2009.

DNA viruses like mumps are less prone to mutation due to the presence of DNA polymerase. RNA viruses are more prone to mutation because they undergo reverse transcription to simulate the role of DNA.
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Answer:

A) Ciprofloxacin (Cipro)

Explanation:

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3 years ago
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iogann1982 [59]

Answer:

The correct answers are option A. "Corals are animals".  B. "Corals are benthic organisms"., and E. "Corals live in tropical water".

Explanation:

Corals are animals, what we know as a coral, is in fact a group of small animals called polyps that need food to survive. Corals are benthic organisms because they live at the bottom of the sea. The subclass of benthic organisms that corals belong is called Macrobenthos, for being large enough to be seen at the naked eye. Corals live mostly in tropical waters, because they do not tolerate waters with a temperature below 18 Celsius.

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Answer:

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Explanation:

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