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41) Where in a typical human cell does glycolysis occur? A)

Question : 41) Where in a typical human cell does glycolysis occur? A) : 1402888

 

 

41) Where in a typical human cell does glycolysis occur?

A) mitochondrion

B) Golgi apparatus

C) cytoplasm

D) nucleus

E) rough endoplasmic reticulum

42) The molecule acetyl CoA is completely broken down into carbon dioxide, hydrogen ions, and electrons in which one of the following processes?

A) glycolysis

B) action of the sodium-potassium pump

C) the electron transport system

D) exocytosis

E) the citric acid cycle

 

43) At the end of the electron transport system, oxygen combines with electrons and hydrogen ions to form ________, a waste product.

A) urea

B) FAD

C) water

D) NAD+

E) glucose

 

44) In the electron transport system, the energy used to synthesize ATP comes from the diffusion of ________ from the outer compartment of the mitochondria to the inner compartment.

A) electrons

B) NADH

C) hydrogen ions

D) FADH2

E) pyruvate

 

45) Cellular respiration is a multipathway process that converts an organic substrate into cellular energy. The majority of energy in the form of ATP is not synthesized until electrons are transferred by ________ and ________ to the electron transport pathway.

A) coenzyme A, FADH2

B) glucose, NADH

C) coenzyme A, NADH

D) FADH2 , NADH

46) Immediately after a meal, which one of the following is first used by cells as an energy source?

A) fat

B) glycogen

C) lactic acid

D) amino acids

E) glucose

 

47) When a runner or other long-distance athlete hits the "wall," the individual is experiencing oxygen debt in muscle cells. In those cells, the pyruvate generated in glycolysis would be expected to be converted to

A) fat

B) lactic acid

C) glucose

D) carbon dioxide

E) water

 

48) The burning sensation associated with muscle fatigue is due to the accumulation of

A) lactic acid

B) pyruvate

C) carbon dioxide

D) NADH

E) protein

 

49) Which one of the following steps in the breakdown of glucose can occur without oxygen?

A) glycolysis

B) the preparatory step

C) the citric acid cycle

D) the electron transport system

E) both the citric acid cycle and the electron transport system

 

 

 

 

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