01:119:115 Lecture Notes - Lecture 60: Cytosol, Intermembrane Space, Acetyl Group

24 views7 pages

apricotcrow522

5 Apr 2016

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

1. through outer membrane: diffuses small pores concentration gradient: across inner membrane: active transport carrier protein needs e, oxidation of pyruvate to acetyl coa. The citric acid cycle (cac): also called krebs cycle. Only 4 atp produced ( 2 in glycolysis +2 in cac) In form of high e e- in nadh & fadh2. We need their e used to synthesize more atp: electron transport chain (etc) , chemiosmosis. E- pass down chain of 4 carriers by redox reactions. Carriers grouped in 4 complexes: i, ii, ii, and iv. I, iii, & iv also pump h+ from matrix to intermembrane space. E- transfer etc causes proteins to pump h+ to the intermembrane space: create h+ gradient. Atp synthase= a molecular mill: enzyme in inner mb. H+ gradient: h+ diffuse through back to matrix: causes rotation. Glucose nadh or fadh2 electron transport chain proton- motive force atp: each nadh:

Related Questions

Where does each of these processes take place within the cell? Possible answers: cytosol, mitochondrial matrix, lysosome, nucleus, inner mitochondrial membrane, outer mitochondrial membrane, mitochondrial intermembrane space

1. Glycolysis cytosol

2. citric acid cycle Mitochondrial Matrix

3. conversion of pyruvate to activated acetyl groups

4. oxidation of fatty acids to acetyl CoA

5. glycogen breakdown

6. release of fatty acids from triacylglycerols

7. oxidative phosphorylation

bronzeimpala88

1. How H+ are pumped across the inner mitchondrial membrane when one FADH2 undergoes oxidation via electron transport? Express your answer as an integer?

2.Using the value of 7.3 kcal/mole fir ATP , how many kcal can be produced from the ATP provided by the reaction of 1 mole of glucose in each of the following?

a. Glycolysis give your ans. using 2 sig fig.

b. Oxidation of pyruvate to acetyl-CoA give ans using 2 sig fig.

c. citric acid cycle give ans. using 2 sig fig.

d. Complete oxidation to CO2 & H2O give ans. to 2 sig fig.

3.How many H+ are pumped across the inner mitchondrial membrane when one NADH undergoes oxidation via electron transport? Express your ans as an integer.

carminelizard500

force times distance

Question 48

Soccer (assuming field player) is a sport which is 90% aerobic.

True

False

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

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 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 55

Which of the following is the best predictor of marathon running performance?

	A.	Maximal rate of pyruvate oxidation
	B.	Maximal rate of lactate formation
	C.	Amount of adipose tissue triglycerides
	D.	Pre-race blood glucose concentration

emeraldfly517

01:119:115 Lecture Notes - Lecture 60: Cytosol, Intermembrane Space, Acetyl Group

Document Summary

Get access

Related Documents

01:119:115 Lecture Notes - Lecture 8: Citric Acid Cycle, Acetyl-Coa, Pyruvic Acid

01:119:115 Lecture 8: Cellular Respiration

01:119:115 Lecture Notes - Lecture 8: Cell Membrane, Citric Acid, Hydrolysis

Related Questions