Biology Final Exam - Fall

Front

What is a catalyst?

Back

A substance that speeds up a chemical reaction without being consumed in the process.

Front

What is an enzyme?

Back

A type of catalyst that accelerates biochemical reactions in living organisms.

Front

Define diffusion.

Back

The movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What variable goes on the Y axis of a graph?

Back

The dependent variable.

Front

What is the function of a ribosome?

Back

To make proteins by translating messenger RNA.

Front

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

Back

The substance upon which an enzyme acts.

Front

What is the difference between an inhibitor and an enzyme?

Back

An inhibitor slows down or stops a chemical reaction, while an enzyme speeds it up.

Front

What is osmosis?

Back

The diffusion of water molecules across a selectively permeable membrane.

Front

What is the function of mitochondria?

Back

To produce energy (ATP) through cellular respiration.

Front

What is homeostasis?

Back

The process by which living organisms maintain a stable internal environment.