Bio Test 2

Front

What is the reactant in an enzyme-catalyzed reaction called?

Back

Substrate

Front

What is the semifluid matrix that surrounds organelles in a cell?

Back

Cytoplasm

Front

How is energy defined in biological terms?

Back

The capacity to do work.

Front

What happens to an atom or molecule when it gains one or more electrons?

Back

It is said to be reduced.

Front

What is a calorie commonly used to measure?

Back

Chemical energy and heat.

Front

What is the role of a catalyst in a chemical reaction?

Back

To speed up the reaction without being consumed.

Front

What is the difference between a substrate and a product in a chemical reaction?

Back

A substrate is the reactant that an enzyme acts upon, while a product is the result of the reaction.

Front

What is the function of ribosomes in a cell?

Back

To synthesize proteins.

Front

What is the significance of the cytoplasm in cellular function?

Back

It provides a medium for biochemical reactions and supports organelles.

Front

What is oxidation in terms of electron transfer?

Back

It is the loss of one or more electrons from an atom or molecule.