We know that animal populations exposed to higher concentrations of radioactive activity, often suffer deleterious genetic mutations. Thus, the answer would be <u>B.) a higher than average mutation rate.</u>
They can ensure that chemical reactions occur in safe temperature by only speeding up the reaction in optimum temperate range.
If the temperature is too low, the enzymes may be inactive, and the chemical reactions may be slow.
If the temperature is too high, the enzyme would be denatured and it can no longer function as a biological catalysts.
Cerebrum responsible for speech emotion and memory
cerebellum responsible for muscle coordination and balance
brain stem responsible fo rinvoluntary mucles
uracil
Explanation:
because the rest are part of the DNA strand
