S1 Exam (COL, Enzymes, Cell Transport)

Front

What is a substrate?

Back

A substrate is a substance on which an enzyme acts during a chemical reaction.

Front

What is the primary function of an enzyme?

Back

The primary function of an enzyme is to speed up chemical reactions by lowering the activation energy required.

Front

What is the active site of an enzyme?

Back

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

Front

What is the difference between catabolic and anabolic reactions?

Back

Catabolic reactions break down molecules into smaller units, releasing energy, while anabolic reactions build larger molecules from smaller ones, requiring energy.

Front

What is passive transport?

Back

Passive transport is the movement of materials across a cell membrane from an area of higher concentration to an area of lower concentration without the use of energy.

Front

What is active transport?

Back

Active transport is the movement of materials across a cell membrane against a concentration gradient, requiring energy.

Front

What is dehydration synthesis?

Back

Dehydration synthesis is a chemical reaction that involves the removal of water to form a bond between two molecules.

Front

What is a catabolic reaction?

Back

A catabolic reaction is a metabolic process that breaks down larger molecules into smaller ones, releasing energy.

Front

What is an enzyme's specificity?

Back

Enzyme specificity refers to the ability of an enzyme to choose exact substrates from a group of similar chemical molecules.

Front

What factors affect enzyme activity?

Back

Factors that affect enzyme activity include temperature, pH, substrate concentration, and the presence of inhibitors or activators.