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WITCHER [35]
3 years ago
8

Why it is difficult for scientists to develop drugs that kill viruses

Biology
2 answers:
Zinaida [17]3 years ago
5 0

Answer:

because viruses adapt and change over time. so by the time they come up with something that might help, the virus would most likely be different and harder for the vaccine to work

Explanation:

Free_Kalibri [48]3 years ago
4 0
It’s easy to find chemicals that kill bacteria. The challenge is that it’s much more difficult to discover and develop substances that are not also toxic to humans. The path from discovery to clinically approved medicine is necessarily long and the failure rate is high.

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Forested watersheds are ineffective biological filters and do not remove pollutants from water.
Ulleksa [173]

no they take the nutrients from the water to make the soil better.

5 0
3 years ago
A trait that occurs in 900 individuals out of a total of 1,800 individuals occurs with a probability of
olchik [2.2K]

Answer: 0.5

Explanation:

Number of people with traits = 900

Total number of individuals= 1800

To find the probability with regards to the question, we divide the number of individuals having the traits by the total population of individuals. This will be:

= 900 / 1800

= 0.5

3 0
3 years ago
You are choosing your favorite fresh vegetables at the grocery store when you are suddenly sprayed with a mist of water meant fo
loris [4]

Answer:

c) pure water on the produce would put it in a hypotonic environment and keep the produce firm.

Explanation:

Ideally, in a natural environment, plants leafs remain fresh and firm looking by absorbing water from their natural environment. However, in a case where these vegetables have been removed from their natural environment, they have lost the ability to absorb water under natural conditions.

In order to keep the leaf cells of the vegetables firm and rigid, so they can look fresh and appealing, they have to be placed in a hypotonic condition i.e. an external condition with high concentration of water. To do this, a grocer in a supermarket will occasionally spray the vegetables with pure water to keep the vegetables' cell from drying out and hence lead to wilting, which would make the vegetables less appealing to customers.

5 0
3 years ago
Which of the following is a function of a plasma membrane protein?
tensa zangetsu [6.8K]

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the plasma membrane is a bilayer of lipid molecules with protein molecules embedded in it.

Explanation:

3 0
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THE ANSWER IS A C E D,

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