Semester Exam Review Unit 2

Front

How does an enzyme's shape relate to its function?

Back

The enzyme is shaped specially for certain substrates to perform a specific reaction.

Front

What controls the movement of molecules inside and outside the cell?

Back

Cell membrane.

Front

What type of transport is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that allows molecules to cross membranes with the assistance of special proteins.

Front

How does an enzyme speed up a reaction?

Back

An enzyme speeds up a reaction by lowering the activation energy.

Front

What is the active site of an enzyme?

Back

The active site is the region on the enzyme where the substrate binds.

Front

What is a substrate in the context of enzymes?

Back

A substrate is the reactant molecule that an enzyme acts upon.

Front

What are products in a chemical reaction?

Back

Products are the substances formed as a result of a chemical reaction.

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration, while osmosis specifically refers to the movement of water across a semipermeable membrane.

Front

What is the role of the cell membrane?

Back

The cell membrane controls the movement of substances in and out of the cell, maintaining homeostasis.