Kinesiology 3339A/B Lecture 16: Exercise Nutrition - Lecture 16

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oliveant147

9 Jan 2012

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25 questions (multiple, multiple) plus a bonus question. 55 minutes (not on midterm) fats (lipids) slide 1. have carbon: have hydrogen and oxygen. fat sits on top of water, cannot mix y ex. bacon grease and water: fats need more oxygen than cho to be metabolized aerobically. can t use fats anaerobically (higher intensities) y whole process of glycolysis can t use fat as a fuel: only uses glucose (we rely more and more on this as we, found in all cell membranes of the body. some is cholesterol, some is phospholipids exercise harder and harder) y dietary cholesterol doesn t have an effect on blood cholesterol: except in a very small percentage of the population y phospholipids, phosphates combined with lipids y. If you don t get enough dietary cholesterol or you don t make enough in your body --- you will have issues with cell function!

Related Questions

My main question within this question is with the âEo (V) for the anaerobic process. Thanks.

(1) (16 pts) Sugars can be digested aerobically (with oxygen) or anaerobically (e.g. by yeast). During aerobic digestion, sugars react with oxygen to form carbon dioxide and water. During anaerobic digestion, sugars can be decomposed by enzymes to create carbon dioxide and alcohols.

(a) (3 pts) Write the balanced chemical equation for the aerobic digestion of 1 mole of glucose C6H12O6(s).

(b) (5 pts) For the reaction in (a) at 25 oC, evaluate âHo (kJ), âSo (J/K), âGo (kJ), the number of moles of electrons transferred, and âEo (V).

(c) (3 pts) Write the balanced chemical equation for the anaerobic digestion of 1 mole of glucose into carbon dioxide and ethanol C2H5OH(l).

(d) (5 pts) For the reaction in (c) at 25 oC, evaluate âHo (kJ), âSo (J/K), âGo (kJ), the number of moles of electrons transferred, and âEo (V).

Question 18

The process that forms new glucose in the liver is called ...

	A.	glycogenolysis
	B.	Krebs cycle
	C.	lipolysis
	D.	gluconeogenisis
	E.	oxidative phosphorylation

Question 57

A person exercises in their âfat burning zoneâ for 4 hours at 35% VO₂peak. The O₂ cost of exercise at that work rate is 0.5L/minute. Following exercise the subject rewards himself with an ice-cream sundae (700kcal). The following statement is true(assume 5kcal/lit of O₂):

	A.	The subject is in neutral energy balance
	B.	The subject consumed fewer calories than they expended during exercise
	C.	The subject consumed more calories than they expended during exercise
	D.	Canât say

Question 52

The primary purpose of the citric acid cycle is...

		aerobic glycolysis
		gluconeogenesis using lactate
		the decarboxylation of carbon compounds to produce NADH.
		the shuttling of hydrogen ions through the inner mitochondrial membrane

Question 51

In aerobic ATP production, the role of oxygen is to...

		to keep the electron transport chain operational
		to accept electrons from the 3rd cytochrome and thereby oxidizing it so it can accept new electrons
		act as a oxidizing agent by accepting electrons from the electron transport chain and combining with hydrogen ions (protons)
		all of the above

Question 50

Glucose is necessary for fatty acid oxidation because...

		its derivative, pyruvate, is condensated with carbonic acid to form oxaloacetate, which in turn is a necessary carbon compound in the citric acid cycle
		it is needed to convert fatty acids to fatty acyl-CoA which in turn is oxidized to acetyl CoA
		glucose is decarboxylated into cytochrome oxidase which is a necessary intermediate in the citric acid cycle
		its derivative, acetyl CoA, is condensated with carbonic acid to form lactase, which in turn is a necessary carbon compound in the citric acid cycle

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Kinesiology 3339A/B Lecture 16: Exercise Nutrition - Lecture 16

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