Unit 4b Cellular Respiration (Bio 2)

Which of the following statements best describes the relationship between photosynthesis and cellular respiration?

• Cellular respiration runs the biochemical pathways of photosynthesis in reverse.

• Photosynthesis stores energy in complex organic molecules; cellular respiration releases energy from complex organic molecules.

• Photosynthesis occurs only in plants; cellular respiration occurs only in animals.

• Photosynthesis is catabolic; cellular respiration is anabolic.

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NGSS.HS-LS2-5

The first stage of cellular respiration, and the oldest in terms of evolution is:

• Krebs Cycle

• Deamination

• Fermentation

• Chemiosmosis

• Glycolysis

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In eukaryotes, glycolysis takes place in the:

• mitochondria of the cell

• cytoplasm of the cell

• ribosomes of the cell

• endoplasmic reticulum of the cell

• Golgi bodies of the cell

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NGSS.HS-LS2-5

What is the product of glycolysis?

• pyruvate

• citrate

• lactate

• ethanol

Acetyl CoA is produced from what molecule?

• citrate

• ATP synthase

• carbon dioxide

• pyruvate

Generation of ATP in the last step of cellular respiration (chemiosmosis) is driven by:

• Pi transfer through the plasma membrane

• a difference in H+ concentration on the two sides of the mitochondrial membrane

• osmosis of macromolecules

• large quantities of ADP

The reaction, C₆H₁₂O₆ + 6 O₂ = 6 CO₂ + 6H₂O, when it occurs in living cells is known as

• cellular respiration

• anaerobic fermentation

• photosynthesis

• glycolysis

• oxidative phosphorylation

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NGSS.HS-LS1-7

NGSS.HS-LS2-5

In cellular respiration, energy is harvested from glucose in a sequence of four main pathways. Which of the following is NOT one of these four pathways?

• Krebs cycle

• glycolysis

• oxidative phosphorylation

• beta oxidation

• pyruvate oxidation

Which of the following statements best describes a characteristic of NAD⁺?

• NAD⁺ is reduced to NADH in glycolysis, pyruvate oxidation, and the citric acid cycle

• NAD⁺ stores more chemical energy than NADH

• NAD⁺ may donate electrons for use in oxidative phosphorylation

• NAD⁺ is oxidized in glycolysis to produce ATP

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NGSS.HS-LS1-7

A single glucose molecule can drive the Krebs cycle:

• one turn

• two turns

• three turns

• four turns

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NGSS.HS-LS1-7

NGSS.HS-LS2-3