Which occurs during digestion?
the mouth only allows for physical digestion.
the mouth only allows for chemical digestion.
chemical digestion prepares the food for physical digestion.
physical digestion prepares the food for chemical digestion.

Physical digestion prepares the food for chemical digestion

Explanation:

Each part of the digestive system helps with the transport of food and liquids through the gastrointestinal tract, then follows a stage of chemical breakdown of food and liquids into small parts. When foods have been chemically broken down, the body absorbs them and transports nutrients where they are needed. Water is absorbed in the large intestine and waste is transformed into feces.

answer; i believe that the correct answer is(d) nondisjunction during meiosis;

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products