Question

Question 24

What is the fate of lactate following exercise cessation?

		Rapid removal in urine since lactic acid is harmful to the body
		Converted to glucose/glycogen by the Cori cycle
		Rapid lactate detoxification by the liver Question 24 What is the fate of lactate following exercise cessation? Rapid removal in urine since lactic acid is harmful to the body Converted to glucose/glycogen by the Cori cycle Rapid lactate detoxification by the liver

Question 30

Which of the following will decrease the most—as a percentage of its resting concentration--during an all-out 100-meter dash (lasting about 10 seconds)?

	A.	Blood glucose concentration
	B.	Muscle glycogen concentration
	C.	Muscle ATP concentration
	D.	Muscle CP concentration

Question 31

What would the effects of a month long high-protein, high-fat diet, low carbohydrate diet be on athletic performance during a marathon? Assume that the person will run the majority of the marathon at >80% VO2peak and will likely run the last few miles at 90% VO2peak:

	A.	Improve because you have now trained the body to oxidize fatty acids for prolonged periods of time
	B.	Improved performance because it provides plenty of protein / amino acids for prolonged exercise which can be used for gluconeogenesis
	C.	The subject will be glycogen depleted and performance will be worse
	D.	No effect

Question 32

A person accidentally ingests a substance that renders the mitochondrial electron transport chain non-functional. The following is true:

	A.	Nothing will change since NADH and FADH are produced during ß-oxidation and the Krebs cycle prior to entering the ETC
	B.	The Kreb’s cycle will speed up to compensate
	C.	The individual will switch to protein breakdown to meet ATP needs
	D.	Cellular respiration will be severely compromised

Question 33

You are training a 400-meter running athlete who states she is taking a supplement to increase the bioavailability and activity of phosphoglucoisomerase (a glycolysis pathway enzyme) to boost her race performance. What is the effect you expect?

	A.	Some improvement since the rate of anaerobic glycolysis will increase
	B.	Worse performance because the levels of enzymes are finely tuned and the disequilibrium from the supplement will affect glycolytic activity
	C.	No change
	D.	Not enough information

Answer 1