Which substances protect against oxidative stress and the resultant tissue damage at the cellular level?
a. hormones
b. antioxidants
c. proteins
d. enzymes

The correct answer is the option: b. antioxidants

Explanation:

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Antioxidants are substances that prevent or delay oxidation.

When there is oxidation, radicals are produced that damage the cells.

Some sources of antioxidants are fruits and vegetables.

We conclude that the correct answer is the option: b. antioxidants

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.