Chapter 2 Biology Vocab Quiz

What is a substance that increases the hydrogen ion concentration in a solution, typically having a pH less than 7?

• Base

• Buffer

• Acid

• Carbohydrate

What term describes the attraction between molecules of different substances, such as water molecules sticking to a glass surface?

• Cohesion

• Adhesion

• Diffusion

• Osmosis

What are the building blocks of proteins, composed of a basic amino group, an acidic carboxyl group, and a unique side chain?

• Carbohydrates

• Lipids

• Amino acids

• Nucleic acids

Tags

NGSS.HS-LS1-1

What is the basic unit of a chemical element, consisting of a nucleus of protons and neutrons surrounded by electrons?

• Molecule

• Atom

• Ion

• Compound

What is a substance that reduces the hydrogen ion concentration in a solution, typically having a pH greater than 7?

• Acid

• Base

• Buffer

• Solvent

What is a solution that resists changes in pH when acids or bases are added, helping to maintain a stable pH?

• Solvent

• Acid

• Buffer

• Base

What are organic compounds made of carbon, hydrogen, and oxygen, which are a primary source of energy for organisms?

• Proteins

• Lipids

• Carbohydrates

• Nucleic acids

What is the attraction between molecules of the same substance, such as water molecules sticking together, called?

• Adhesion

• Cohesion

• Diffusion

• Fusion

Tags

NGSS.HS-ESS2-5

What is a substance formed when two or more chemical elements are chemically bonded together?

• Mixture

• Solution

• Compound

• Element

What type of chemical bond involves two atoms sharing one or more pairs of electrons?

• Ionic bond

• Hydrogen bond

• Metallic bond

• Covalent bond

Tags

NGSS.HS-PS1-1