In which region is the enzyme saturated with substrate?

Where are the options?

Ibelieve the answer is c. 

The answer would be semen as a whole but the cells contained are called sperm and they fertilize the eggi hope this

There are four nitrogenous bases that make up dna. the two pyramidines are thymine and cytosine. the two purines are adenine and guanine. these bases pair in a very specific way. adenine - thymineguanine - cytosine i remember it like this: a tall, good cat.