Molecular Biology

What type of organic molecules are enzymes?

• carbohydrates

• lipids

• nucleic acids

• proteins

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What are the subunits of DNA and their function?

• nucleotides that store information

• monosaccharides that provide quick energy for the cell

• lipids that store energy and provide insulation

• proteins that provide the building blocks for the structural components of organisms

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How does the amount of energy resulting from fermentation compare with that of aerobic respiration?

• aerobic respiration results in less energy

• aerobic respiration results in more energy

• each process results in equal amounts energy

• each process results in variable amounts of energy

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Which type of molecule do whales use for energy storage and insulation?

• DNA

• glucose

• fat

• starch

Which most directly controls the rate as which food is broken down to release energy?

• enzymes

• hormones

• nucleic acids

• vitamins

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If energy is needed to move materials into or out of a cell, what is most likely occurring?

• active transport

• passive transport

• osmosis

• diffusion

What factor most affects the order of amino acids in a protein?

• the DNA located in the nucleus of the cell

• the cell in which the protein is located

• the amount of ATP available for the cell's use

• the area in a cell where proteins are produced

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Which statement best compares aerobic and anaerobic respiration?

• Less ATP is generated during anaerobic respiration than during aerobic respiration

• more water is generated during anaerobic respiration than during aerobic respiration

• more oxygen is generated during anaerobic respiration than during aerobic respiration

• less lactic acid is generated during anaerobic respiration than during aerobic respiration

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Which would be the best evidence that a cell is using active transport to move a substance across its cell membrane?

• Substances are moving rapidly across the cell membrane

• ATP is being rapidly consumed near the cellular membrane

• substance are moving from high to low concentrations

• substances are moving through channels in the cell membrane