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Question 01

Anaerobic metabolism refers to the generation of ATP:

a) without the involvement of ADP

b) without the use of glycogen

c) without the use of oxygen

d) in the absence of available oxygen

e) by the conversion of pyruvate to lactate

Question 02

The most rapid method to resynthesise ATP during exercise is through:

a) glycolysis

b) phosphocreatine breakdown

c) tricarboxylic acid cycle (Krebs' cycle)

d) glycogenolysis

e) gluconeogenesis

Question 03

In general, the higher the intensity of exercise, the greater the proportional contribution of:

a) aerobic energy production

b) anaerobic energy production

c) the TCA cycle (Krebs' cycle) to the production of ATP

d) the electron transfer chain to the production of ATP

e) fat oxidation

Question 04

The energy charge of the cell is:

a) the difference between the charge on the outside and inside of a cell

b) generated bthe overall rate of energy use by the celly the sodium-potassium ATPase

c) the overall rate of energy use by the cell

d) the extent to which the total adenine nucleotide pool is phosphorylated

e) the sum of the ATP, ADP and AMP concentrations in the cell

Question 05

The energy released from the breakdown of the high-energy phosphates, ATP and phosphocreatine, can sustain maximal exertion exercise for about:

a) 1-2 seconds

b) 5-10 seconds

c) 30-40 seconds

d) 50-60 seconds

e) 240 seconds

Question 06

The loss of adenine nucleotides from muscle cells during high intensity exercise results from:

a) an increase in pH

b) the dephosphorylation of ATP to ADP and inorganic phosphate

c) the deamination of AMP to IMP and ammonia

d) the dephosphorylation of AMP to adenosine

e) both (c) and (d)

Question 07

Glycolysis is the name given to the pathway involving the conversion of:

a) glycogen to glucose-6-phosphate

b) glycogen or glucose to fructose

c) glycogen or glucose to pyruvate or lactate

d) glycogen or glucose to pyruvate or acetyl CoA

e) glucose or fatty acids to pyruvate or acetyl CoA

Question 08

The conversion of one molecule of glucose to two molecules of pyruvate results in the net formation of:

a) six molecules of water

b) two molecules of ATP

c) three molecules of ATP

d) thirty-eight molecules of ATP

e) thirty-nine molecules of ATP

Question 09

The creatine kinase reaction is:

a) irreversible

b) slow compared with glycolysis

c) not activated until all the ATP has been used up

d) inhibited by low pH in the muscle

e) not important for sprinting

Question 10

The complete resynthesis of phosphocreatine after very high intensity exercise normally takes:

a) about 10 seconds

b) about 30 seconds

c) about 1 minute

d) about 4 minutes

e) more than 10 minutes

Oxford University Press, Online Resource Centre, Chapter 03.

Chapter 03

Instructions