Why did the author begin the article by
mentioning the coronavirus?
A
because it underscores a reason why
people have lower immune systems
B
because it shows that people who are
stressed are more likely to get flu-like
illnesses
st
because it highlights a reason why more
Americans are engaging in stress-eating
because it shows that stress-eating can
have a positive effect on those who are
sick

a neutral ph of 7 and normal organism temperature is needed for a certain enzyme to be effective.  

what would happen to the enzyme if the ph and/or temperature fluctuate greatly from the norm?  

a.the enzyme’s hydrogen bonds will break.  

b.the activation energy will increase.  

c.more product will be formed.

d.the ideal temperature and ph for the enzyme function will decrease.  

      n

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.