Which of the following is not true about uracil as an incorrect base in dna?
a., it arises from a modified form of cytosine.
b., it occurs frequently across the genome.
c., it improperly pairs with guanine on the opposite strand.
d., it converts the dna strand into rna.

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen