Macromolecules & Enzymes Review

Which macromolecule serves as the primary energy source for cells?

• Proteins

• Carbohydrates

• Lipids

• Nucleic Acids

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NGSS.MS-LS1-6

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What is the monomer of proteins?

• Fatty acids

• Monosaccharides

• Amino acids

• Nucleotides

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NGSS.HS-LS1-1

NGSS.HS-LS1-6

Enzymes are an example of which type of macromolecule?

• Carbohydrates

• Proteins

• Lipids

• Nucleic Acids

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NGSS.HS-LS1-1

What is the primary function of nucleic acids in cells?

• Store genetic information

• Provide immediate energy

• Act as enzymes

• Provide insulation

Which condition would most likely denature an enzyme?

• Optimal pH

• High temperature

• Moderate substrate concentration

• Low salt concentration

What happens to an enzyme when the pH is too high or too low?

• It works faster

• It becomes denatured

Which of the following best describes a catalyst?

• A molecule that slows down reactions

• A molecule that increases reaction rates without being used up

• A molecule that provides energy for reactions

• A molecule that absorbs heat during reactions

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NGSS.HS-PS1-5

How do lipids contribute to cellular function?

• They act as enzymes

• They store energy and provide insulation

• They transport genetic information

• They regulate chemical reactions

Which of the following is NOT a characteristic of living things?

• Living things reproduce

• Living things are made of cells

• Living things respond to stimuli

• Living things are not affected by their environment

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NGSS.MS-LS2-1

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Prokaryotes differ from eukaryotes because they lack:

• Ribosomes

• A nucleus

• DNA

• Cytoplasm