Answer:
The answer is D a retrovirus inserts DNA into the host cells genes
Semilunar valve will be open
The answers are A, B, & C. Steroid hormones have a
longer half-life than peptide hormones because steroid hormones ride on carrier
proteins in the blood. In other words, they
are bound to protein carriers that transport molecules across the membrane. They can also be stored temporarily in the adipose
tissue. And also, steroid hormones are sent to the nucleus where it regulates transcription
while peptides don’t require this process. This is the reason why the effects of
steroid hormones are exerted more slowly than peptides.
Glucose is required for both aerobic and anaerobic respiration.
The aorta, which arises directly from the heart
