BIOB34H3 Lecture Notes - Lecture 20: Poikilotherm, Resting Metabolic Rate, Ectotherm

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4 Oct 2016

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Metabolism and metabolic rate: metabolism, metabolic rate and methods of metabolic rate measurement. Metabolism of glucose begins with glycolysis in which glucose is converted to pyruvate. Pyruvate is then oxidized to produce acetyl-coa which then enters the krebs (citric acid) cycle. Within the krebs cycle, pyruvate is converted into a series of intermediate compounds with the result being the production of 2 atp molecules, fadh molecules and nadh molecules. Fadh and nadh then enter the electron transport chain leading to the further production of atp. The important point for this course is that the metabolism of glucose involves the consumption of oxygen and the production of carbon dioxide (here we are focusing on aerobic respiration). You do not need to know the details of these pathways in this course. Other fuel sources such as proteins and lipids are also metabolized with the result being that oxygen is consumed and carbon dioxide is produced.

Related Questions

In glucose metabolism, glucose enters into the Glycolysis pathway. The products of glycolysis are then utilized by the Pyruvate Dehydrogenase Complex, which shuttles its products into the Citric Acid Cycle. The combined activities of these pathways directly synthesize a number of molecules of ATP, GTP, NADH and FADH₂. Indicate the net gain of each of the molecules listed in the table below if a single glucose molecule were to be completely and sequentially metabolized by all three processes.

Pathway	ATP	GTP*	NADH	FADH₂ / QH₂
Glycolysis
Pyruvate Dehydrogenase Complex
Citric Acid Cycle

fuchsiarhinoceros778

The breakdown of glucose during aerobic respiration yields ______.

a net amount of 38 molecules of ATP.

a net amount of 58 molecules of NADH

a net amount of 28 molecules of ADP

a net amount of 2 molecules of ATP

Which of the following metabolic processes does not occur in animal cells?

Fermentation

Glycolysis

Calvin cycle

Citric Acid Cycle

Yeast ferment sugar into carbon dioxide and _____.

glycogen

water

ethanol

pyruvat

Glycolysis splits glucose into two molecules of ______.

		acetate
		lactate
		pyruvate
		citrate

1) The complete catabolism of glucose results in the generation of ___________ ATP.

	1.	29
	2.	100
	3.	20
	4.	50

2) The presence of _____________________ is a determinant factor on whether pyruvate continues its metabolism into the Krebs cycle.

3) As humans we breath in air that contains oxygen and breath out carbon dioxide . The oxygen we consume it is used in the metabolism of glucose in the ________________________.

electron transport chain as an acceptor of electrons

anaerobic respiration

citric acid cycle

4.conversion of pyruvate to acetyl-CoA

4) A glucose molecule can generate energy, but only if sufficient amount of energy is invested to initiate the chemical reactions that are involved in the catabolism of the glucose molecule.

True

False

5) The ___________________ of glycogen from individual/separate molecults of glucose is an ___________________ reaction.

	1.	breakdown, endergonic
	2.	breakdown, exergonic
	3.	synthesis, endergonic
	4.	synthesis, exergonic

BIOB34H3 Lecture Notes - Lecture 20: Poikilotherm, Resting Metabolic Rate, Ectotherm

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