BBMB 301 Study Guide - Midterm Guide: Hydrolysis, Biotin, Nicotinamide Adenine Dinucleotide

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rubytrout142

30 Oct 2014

School

Iowa State University

Department

Biochemistry, Biophysics, and Molecular Biology

Course

BBMB 301

Professor

All

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Document Summary

Which of the following conditions will activate the pdh kinase, which catalyzes the phosphorylation and inactivation of e1 in the pdh complex? elevated concentrations of nadh and atp. 1, decarboxylation; 2, oxidation; 3, transfer to coa. Which of the following serves as the flexible arm that transfers reaction intermediates from one site to the next within the pyruvate dehydrogenase complex? lipoamide. The image shows glucose in its linear and ring forms. The oxygen in the ring form that indicates the alpha configuration of the anomeric carbon is marked with an asterisk (*). O in the ring c-o-c corresponds with oxygen of oh group on the carbon adjacent to the bottom of the sugar. (top is cho, bottom is ch2oh) O on the oh group next to the oxygen in the ring c-o-c(oh) corresponds with oxygen at the top of the sugar. (cho) Amylose has (cid:0) ( 1 (cid:0) 4) linkages and cellulose has (cid:0) ( 1 (cid:0) 4) linkages.

Related Questions

1. During the TCA cycle, four reactions occur in which a pair of electrons are transferred from a substrate to an electron accepting coenzyme. These reactions are catalyzed by?

2.During the TCA cycle, four reactions occur in which a pair of electrons are transferred from a substrate to an electron accepting coenzyme. These reactions are catalyzed by?

3.Potent respiratory poison, including carbon monoxide, azide and cyanide have their toxic effect by binding to the heme a3 site of _____.

4.The first step in the TCA cycle is the condensation of the two-carbon acetyl group with a four-carbon _____ to form a six-carbon citrate molecule?

5.The inner mitochondrial membrane is virtually devoid of ____, and and rich in ____, which are characteristics of bacterial plasma membranes.

6.Iron sulfur centers are joined to the protein by linkage to a sulfur atom of a/n ___.

7.Decarboxylation of pyruvate and transfer of the acetyl group to CoA , along with the reduction of NAD₊ is catalyzed by ___.

8.When FADH₂ is the electron donor, electrons are passed directly to ____ in the respiratory chain

9.With the exception of ____, all of the redox centers within the respiratory chain that accept and donate electrons are prosthetic groups.

10.It iis evident fromt eh net equation fo the TCA cycle that the primary products of the pathway are the reduced coenzymes _____.

11. Complex III catalyzes the transfer of electrons from ___ to ___.

12. The passage of a pair of electrons from NADH to ubiquinone in the respiratory chain is accompanied by movement of roughly four protons from (the) ___ to (the) ___.

13. When NADH is the electron donor, electrons pass the respiratory chain by means of ____.

14. The matrix of the mitochondrion has a gel-like consistency owing to the presence of a high conentration of _____.

These are questions I missed on a quiz the instructor does not post what the answers should be and has not responded to my emails please help.

Thanks,

Amber

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

1. Which is an w-3 fatty acid?

A) B) C) D) E) None ofthese

2. In many cases, cellular signal transduction is mediated by amembrane-associated G-protein complex. Which is not right aboutthis protein complex?

A) The complex is made of Î±-, Î²-, and Î³-subunit.

B) The G_sÎ±-subunit has a GTPase activity.

C) Depending on the receptor types, eitherG_sÎ±-subunit or G_iÎ±-subunit is used.

D) Signal transduction through G-proteins ultimately regulatesprotein phosphorylation.

E) None of the above.

3. Which statement is not right about the pyruvatedehydrogenase?

A) This enzyme is located in the mitochondria.

B) This enzyme consists of three different enzymatic subunits(E1, E2, and E3).

C) This enzyme catalyzes the reaction: Pyruvate + CoA + NAD Â®Acetyl-CoA + CO₂ + NADH

D) This enzyme also uses TPP (thiamine pyrophosphate), lipoicacid, and FAD as cofactors.

E) Despite its complexity, this enzyme is not an importantregulation point of TCA cycle.

4. To maintain a proper rate of the TCA cycle, oxaloacetate isreplenished periodically. To increase [oxaloacetate], ___X____ isturned on but the rest step of TCA cycled is turned off byphosphorylation of __Y__.

A) X = Glyoxylate cycle :::::: Y = isocitrate dehydrogenase

B) X = Glyoxylate cycle :::::: Y = isocitrate lyase

C) X = Qcycle :::::: Y = isocitrate dehydrogenase

D) X = Qcycle :::::: Y = isocitrate lyase

E) None of the above.

5. Assume you have three NADH and one FADH₂.Calculate the total numbers of H⁺ pumped into theinter-membrane space and the maximal number of ATP produced insidethe matrix.

A) 40 H⁺ and 12 ATP
B) 40 H⁺ and 11 ATP
C) 36 H⁺ and 12 ATP

D) 36 H⁺ and 11 ATP
E) None of the above.

I put the following

1. D

2. D

3. E.

4. idk

5. idk

Can someone help me out for 4 & 5 and reassure I got 1-3correct! Thanks

sangriarabbit412

BBMB 301 Study Guide - Midterm Guide: Hydrolysis, Biotin, Nicotinamide Adenine Dinucleotide

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