Biology Unit 2 Review

What are the four types of macromolecules?

• A) Carbohydrates, proteins, lipids, nucleic acids

• B) Vitamins, minerals, enzymes, hormones

• C) Sugars, starches, fibers, proteins

• D) Water, salts, sugars, proteins

What is the primary function of carbohydrates?

• A) Energy source

• B) Catalyzing reactions

• C) Genetic information storage

• D) Structural support

Tags

NGSS.HS-LS1-7

Which macromolecule is primarily responsible for catalyzing biochemical reactions?

• A) Carbohydrates

• B) Lipids

• C) Proteins

• D) Nucleic acids

What is the structure of lipids mainly composed of?

• A) Amino acids

• B) Nucleotides

• C) Fatty acids and glycerol

• D) Simple sugars

What is the difference between adhesion and cohesion?

• A) Adhesion is attraction between similar molecules; cohesion is between different molecules.

• B) Adhesion is attraction between different molecules; cohesion is between similar molecules.

• C) Both are types of molecular attraction.

• D) Adhesion occurs in liquids; cohesion occurs in gases.

What are enzymes?

• A) Carbohydrates that provide energy

• B) Proteins that speed up chemical reactions

• C) Lipids that store energy

• D) Nucleic acids that store genetic information

Tags

NGSS.HS-PS1-2

Can enzymes be reused?

• A) Yes, they can be reused multiple times.

• B) No, they are consumed in reactions.

• C) Only under specific conditions.

• D) They degrade after use.

What factors affect enzyme function?

• Temperature and pH

• Concentration of substrate

• Presence of inhibitors

• All of the above

What type of macromolecule are enzymes?

• Carbohydrates

• Proteins

• Lipids

• Nucleic acids

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

Most enzyme names end in…

• -ase

• -in

• -ose

• -ite