Macromolecules, Enzymes, and Properties of Water

What type of bond is formed between two water molecules?

• hydrogen bond

• polar bond

• covalent bond

• ionic bond

What is the primary function of enzymes in biological systems?

• Transport of molecules

• Catalysis of chemical reactions

• Regulation of gene expression

• Structural support

Tags

NGSS.HS-LS2-3

What are the building blocks of proteins?

• carbohydrates

• lipids

• nucleic acids

• amino acids

Tags

NGSS.HS-LS1-1

Which macromolecule stores and transmits genetic information?

• RNA

• DNA

• Protein

• Carbohydrate

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which macromolecule is composed of nucleotides?

• Protein

• Carbohydrate

• Lipid

• DNA

What property of water allows it to stick to other substances?

• adhesion

• cohesion

• repulsion

• evaporation

Tags

NGSS.HS-ESS2-5

Proteins are formed from monomers (subunits) called

• amino acids

• fatty acids

• nucleic acids

• nucleotides

Tags

NGSS.HS-LS1-1

The unique properties of water enable life to exist on Earth. Which of these is a property of pure water?

• It dissolves many substances.

• Its solid form is more dense than its liquid.

• It has a low heat absorption capacity.

• It is slightly more acidic than air.

Tags

NGSS.HS-ESS2-5

Enzymes only work with specific substrates because each substrate

• has a specific activation site for enzyme attachment

• can only use a specific ionic bond with the enzyme

• destroys its specific enzyme

• actively interferes with other substrates around it

Peroxidase is an enzyme that breaks down hydrogen peroxide in cells. It accomplishes this because of its structure. What part of the enzyme is involved in catalytic activity?

• active site

• binding pocket

• quaternary structure

• pleated sheet