Unit 2: Cellular Respiration

Question 1

Alternative Respiratory Substrate

Answer 1

Substrate used for respiration other than carbohydrate.

Question 2

ATP

Answer 2

Molecule used for energy transfer in cells.

Question 3

Cellular Respiration

Answer 3

Release of energy from respirtatory substrates.

Question 4

Citrate

Answer 4

Citric acid; first substance produced in the citric acid cycle.

Question 5

Citric Acid Cycle

Answer 5

Second stage of aerobic respiration, occurring in the matrix of mitochondria.

Question 6

Acetyl Group

Answer 6

Produced by the breakdown or pyruvate; joins with oxaloacetate in the citric acid cycle.

Question 7

Coenzyme A

Answer 7

Substance that carries an acetyl group into the citric acid cycle.

Question 8

Dehydrogenase

Answer 8

Enzyme which removes hydrogen from its substrate; important in the citric acid cycle.

Question 9

Electron Transport Chain

Answer 9

Group of proteins embedded in membranes of mitochondria and chloroplasts.

Question 10

FAD

Answer 10

Hydrogen carries important in the citric acid cycle.

Question 11

Fermentation

Answer 11

Progression of pyruvate in the absence of oxygen.

Question 12

Glycolysis

Answer 12

First stage in cellular respiration.

Question 13

High-Energy Electron

Answer 13

Electron that can yield energy as it passed through an electron transport chain.

Question 14

Intermediate

Answer 14

Substance in a metabolic pathway between the original substrate and the end product.

Question 15

Lactate

Answer 15

Produced by the anaerobic conversion of pyruvate in mammalian muscle cells.

Question 16

NAD

Answer 16

Hydrogen carries important in the citric acid cycle.

Question 17

Oxaloacetate

Answer 17

Substance that combines with the acetyl group in the citric acid cycle.

Question 18

Phosphate (Pi)

Answer 18

Inorganic phosphate used to phosphorylase ADP.

Question 19

Phosphorylation

Answer 19

Addition of phosphate to a substance.

Question 20

Pyruvate

Answer 20

End product of glycolysis.