Which of the following is a coenzyme associated with cellular respiration? A. NAD+ B. O2 C. FAD D. both A and C ___

Since glucose is a high-energy molecule and its metabolites, CO2 and H2O are low-energy molecules, the breakdown of glucose would be described as an _____ reaction. A. exergonic B. endergonic ___

NAD+ is _____ when it accepts two electrons and a hydrogen ion (H+). A NAD+ is _____ when it accepts two electrons and a hydrogen ion (H+). A. reduced B. oxidized ___

About _____ of the energy in glucose is transformed into ATP. A. 5% B About _____ of the energy in glucose is transformed into ATP. A. 5% B. 40% C. 75% D. 100% ___

Which of the following statements correctly describes glycolysis. A Which of the following statements correctly describes glycolysis? A. Glycolysis occurs in the mitochondria. B. glycolysis requires O C. Glycolysis produces two molecules of pyruvate. D. all of the above ___

Which of the following is not a product of the complete breakdown of glucose? A. O2 B. CO2 C. ATP D. H2O ___

The first phase of glucose metabolism is _____. A. the Krebs cycle B The first phase of glucose metabolism is _____. A. the Krebs cycle B. glycolysis C. the electron transport system D. the transition reaction ___

The coenzymes NAD and FAD carry electrons to the _____. A. nucleus B The coenzymes NAD and FAD carry electrons to the _____. A. nucleus B. Krebs cycle C. plasma membrane D. electron transport system ___

Since it is universally found in organisms, researchers believe_____ evolved first. A. the electron transport system B. Krebs cycle C. glycolysis ___

The inputs of glycolysis include _____. A. glucose B. NAD+ C. ATP D The inputs of glycolysis include _____. A. glucose B. NAD+ C. ATP D. all of the above ___

When a phosphate is transferred from a high-energy molecule containing a phosphate group to ADP to form ATP it's referred to as _____. A. photophosphorylation B. substrate-level phosphorylation C. oxidative phosphorylation ___

Glycolysis occurs in the _____. A. cytosol B. matrix C. cristae D Glycolysis occurs in the _____. A. cytosol B. matrix C. cristae D. nucleus ___

There is/are _____ pyruvate molecule(s) produced per glucose molecule during glycolysis. A. one B. two C. six D. ten ___

If oxygen is not available _____ follows glycolysis. A. fermentation B If oxygen is not available _____ follows glycolysis. A. fermentation B. the transition reaction C. the Krebs cycle D. the electron transport system ___

When oxygen is available, pyruvate enters the _____. A. nucleus B When oxygen is available, pyruvate enters the _____. A. nucleus B. chloroplast C. plasma membrane D. mitochondria ___

Each of the two pyruvates produced during glycolysis has _____ carbons Each of the two pyruvates produced during glycolysis has _____ carbons. A. 3 B. 6 C. 12 D. 36 ___

Which of the following is NOT a product (an output) of glycolysis. A Which of the following is NOT a product (an output) of glycolysis? A. NADH B. pyruvate C. CO2 D. ATP ___

The "after taxes" (net gain) number of ATP produced during glycolysis is _____. A. 1 B. 2 C. 4 D. 32

The ATP produced during glycolysis are produced by _____. A The ATP produced during glycolysis are produced by _____. A. substrate-level phosphorylation B. oxidative phosphorylation C. photophosphorylation ___

The enzymes of the transition reaction and Krebs cycle are located in the _____. A. cytosol B. matrix C. cristae D. thylakoids ___

The __________ connects glycolysis to the Krebs cycle. A The __________ connects glycolysis to the Krebs cycle. A. electron transport system B. transition reaction C. cristae D. mitochondrial intermembrane ___

When electrons are removed from pyruvate in the transition reaction, they are accepted by _____. A. acetyl Co-A B. FAD C. NAD+ D. ATP ___

Acetyl Co-A is formed during the transition reaction by attaching _____ to a two-carbon acetyl group. A. NAD+ B. coenzyme A C. pyruvate D. oxaloacetate ___

The first metabolite of the Krebs cycle is __________. A. lactate B The first metabolite of the Krebs cycle is __________. A. lactate B. pyruvate C. oxaloacetate D. citrate ___

Which of the following is an output of the Krebs cycle? A. CO2 B. ATP C. FADH2 D. all of the above ___

Which of the following Krebs cycle products is disposed of by our respiratory system when we exhale? A. CO2 B. ATP C. NADH D. FADH2 ___

The electrons that enter the electron transport system are carried there by _____. A. NADH B. FADH2 C. both A and B ___

The energy released by the electron transport system produces ATP by _____. A. photophosphorylation B. substrate-level phosphorylation C. oxidative phosphorylation ___

The electron transport system is located in the _____. A. stroma B The electron transport system is located in the _____. A. stroma B. matrix C. cytosol D. cristae ___

When O2 is reduced during the electron transport system, _____ is produced. A. H2O B. CO2 C. ADP D. glucose ___

When NADH produced during the transition reaction and Krebs cycle delivers electrons to the electron transport system, _____ ATP is/are produced. A. 1 B. 2 C. 3 D. 36 ___

The final electron acceptor in the electron transport system is _____ The final electron acceptor in the electron transport system is _____. A. FADH2 B. O2 C. coenzyme Q D. cytochrome b ___

How many ATP molecules are produced when FADH2 delivers electrons to the electron transport system? A. 1 B. 2 C. 4 D. 36 ___

Oxygen debt is _____. A. the amount of oxygen needed to get rid of lactate B. the amount of oxygen needed for cellular respiration C. the amount of oxygen needed for glycolysis D. the amount of oxygen the US owes Japan ___

Animal cells perform _____ fermentation. A. lactate (lactic acid) B Animal cells perform _____ fermentation. A. lactate (lactic acid) B. alcoholic C. both A and B ___

The product of alcoholic fermentation that allows us to make bread is _____. A. O2 B. CO2 C. H2O D. lactate ___

During fermentation, _____ is regenerated and it returns to glycolysis to pick up more electrons. A. ATP B. glucose C. NAD+ D. pyruvate ___

Athletes' cells _____. A. metabolize more fats for ATP which maintains blood glucose levels B. have the same number of mitochondria as a "couch potato" C. produce large quantities of lactate and H+ D. all of the above ___

Metabolites of glycolysis and the Krebs cycle can be converted to _____. A. amino acids B. glycerol C. fatty acids D. all of the above ___

Catabolism _____. A. breaks down molecules B. tends to be exergonic C Catabolism _____. A. breaks down molecules B. tends to be exergonic C. drives anabolism D. all of the above ___