What do the salivary glands, the pancreas, and the stomach have in common?

a) they all mechanically break down food.
b) they all are accessory structures of the digestive system.
c) they all in blood production.
d) they all secrete enzymes that break down food.

the binding of the substrate is dictated by the shape of each molecule. side chains on the enzyme interact with the substrate in a specific way, resulting in the making and breaking of bonds.

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.