Biochemistry 2280A Lecture : Citric Acid Cycle

28 views2 pages

orchidotter238

21 Dec 2011

School

Department

Course

Professor

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

Document Summary

Outer membrane is composed of lipids pore made of proteins (allow some molecules across). Outter membrane is leaky small molecules can get across readily, but larger proteins cant. Inner membrane is a tighter seal won t allow polar molecules to cross unless a special pathway exists. Atp synthesis/most of the reactions occur here therefore a higher surface area. Space inbetween the inner and outer membrane is the intermembrane space. Individual cristae not linear quite extensive; have some volume to them. Early on before prokaryotic/eukaryotic split mitochondria came into a symbiotic relationship with a larger cell. Mitochondria reproduce by splitting; they have their own genome; for these reasons we believe they have evolved from bacteria. Mitochondria also has 2 membranes just as bacteria do. Last 2 carbons get oxidized in the citric acid cycle. Pyruvate and oxygen go through a series of reactions to get the final products. Stage 2. citric acid cycle last 2 carbons get oxidized.

Related Questions

1) In liver cells, the inner mitochondrial membrane is aboutfive times the surface area of the outer membrane. What purposedoes this serve?

		A) It increases the number of respiratory chains that themitochondria can hold.
	B)	It allows for an increased rate of glycolysis.
		C) It allows more area for the citric acid cycle to takeplace.
		D) It gives a steady supply of electrons for ATP synthase todraw from

2) If you expose a cell that is carrying out cellularrespiration to a radioactive oxygen gas, which of the followingmolecules would you expect to be radioactive at the end?

	A)	Water
		B) ATP
		C) Pyruvate
		D) Carbon dioxide

bronzegnat811

The electron transport chain (ETC), or respiratory chain, is linkedto proton movement and ATP synthesis. Select the STATEMENTS thatACCURATELY describe the electron transport chain.(True/False)
a)Electron transfer in the ETC is coupled to proton transfer formthe matrix to the intermembrane space.
b)Electrons generated by he citric acid cycle in the mitochondrialmatrix enter the ETC.
c)The outer membrane of mitochondria is readily permeable to smallmolecules and hydrogen ions.
d)Electron carriers in the mitochondrial matrix include ubiquinone(coenzyme Q), FMN, and cytochrome c.
e)Prosthetic groups, such as iron-sulfer centers, are directlyinvolved with electron transfer.
f)Electron carriers are organized into four complexes of proteinsand prosthetic groups.
g)The reactions of the ETC take place in the outer membrane ofmitochondria.

beigekoala314

1) In Eukaryotic cells, Glycolysis occurs in the __________,Pyruvate Oxidation and the Citric Acid Cycle occur in the ________,and the electron transport chain is in the _____________.

a) Mitochondrial matrix; Mitochrondrial inner membrane;Cytoplasm

b) Cytoplasm; Mitochrondrial inner membrane; Mitochondiralmatrix

c) Mitochrondrial inner membrane; Cytoplasm; Mitochondrialmatrix

d) Cytoplasm; Mitochondrial matrix; Mitochrondrial innermembrane

e) Mitochrondrial inner membrane; Mitochondrial Matrix;Cytoplasm

2) We can detect tyrosinase among thousands of other proteins ina mushroom extract (in a solution or in-gel) because:

a) Its bigger than other proteins

b) Its smaller than other proteins

c) Its more charged than other proteins

d) It reacts with a specific substrate to produce a coloredproduct

e) It converts a specific colored substrate to a colorlessproduct

3) The highest energy carrier (transfer molecule) in cellsis:

a) NADH

b) FADH2

c) ATP

d) GTP

e) Acetyl- coA

amaranthimpala502

Biochemistry 2280A Lecture : Citric Acid Cycle

Document Summary

Get access

Related Documents

Biochemistry 2280A Lecture Notes - Lecture 10: Pyruvate Dehydrogenase, Lipid Bilayer, Coenzyme A

Biochemistry 2280A Lecture Notes - Lecture 10: Pyruvate Dehydrogenase, Citric Acid Cycle, Acetyl-Coa

Biochemistry 2280A Lecture Notes - Lecture 10: Inner Mitochondrial Membrane, Acetyl-Coa, Inner Membrane

Related Questions