Deck 16: Atp Production Iii: Fatty Acid Oxidation and Amino Acid Oxidation

Question 1

Each turn of the beta oxidation cycle releases one acetyl CoA. Stearic acid is an 18 carbon saturated fatt y acid. How m any turns of the beta cycle are necess ary to comp letely convert stearic acid into acetyl CoA molecules?

A) 18
B) 17
C) 9
D) 8
E) 7

Answer 1

D

Question 2

Ketogenic amino acids can be c onv erted to

A) a ke to g luta ric ac id
B) Dihyd rox yace tone pho sph ate
C) Glucose
D) Ph osp hoe nolp yruvate
E) Acetyl CoA

Answer 2

E

Question 3

Glyce rol en ters g lycolysis by b eing con verte d to

A) Glucose
B) Glyceralde hyde-3 -pho spha te
C) Fru ctos e 1,6 bipho sph ate
D) Ph osp hoe nolp yruvate
E) La ctic ac id

Answer 3

B

Question 4

Not counting the energ y produced by the oxidation of acetyl CoA , or the energy used to prime the cycle, each turn of the beta oxidation cycle produces

A) 0 ATP
B) 2 ATP
C) 3 ATP
D) 5 ATP
E) 6 ATP

Question 5

Which of the following amino acids are exclusively glucogenic?

A) Leucine
B) Isoleucine
C) Tryptophan
D) Threonine
E) Alanine

Question 6

O ne of t he ke ton e b od ies is

A) Dihd ryoxyac eton e ph osp hate
B) Ph osp hoe nolp yruvate
C) þ -hyd rox y bu tyric a cid
D) D iph os ph og lyce ric ac id
E) Glycerol

Question 7

The thiokinase reaction that begins beta oxidation

A) Consumes the equivalent of 2 ATP
B) Requires thiamine
C) Requires Coenzyme A
D) Makes fatty acyl carnitine
E) Both A and C are correct

Question 8

O f th e fo llow ing , the on ly ex clu siv ely k eto ge nic am ino ac id is

A) Leucine
B) Alanine
C) Glycine
D) Tryptophan
E) Histidine

Question 9

The only exclusively ketogenic am ino acids are

A) Leucine and lysine
B) Leucine and isoleucine
C) Tryptophan and phenylalanine
D) Serine and threonine
E) Aspartic and glutamic acids

Question 10

T rig lyce rid es co nta in

A) Three fatty acids
B) Choline
C) Glycerol
D) Ph osp hate
E) A and C are correct

Question 11

Each ac etyl C oA m ole cu le re lea se d fr om a tu rn of t he be ta o xid atio n c ycle enters the TCA cycle and eventually produces the equivalent of how many ATP m olecules?

A) 12
B) 15
C) 9
D) 11
E) 14

Question 12

Fa tty ac ids are tra ns po rte d in to m itoc ho nd ria

A) As fatty acyl CoA
B) As free fatty acids
C) As monoglycerides
D) As diglyceride
E) As fatty acyl carnitine

Question 13

The urea cycle

A) Is u se d b y the liver to m ak e u re a fr om am m on ia
B) Co nde nse s am m onia with bic arbo nate to m ak e ca rbam oyl pho sph ate
C) Us es a spa rtic ac id to m ak e arg inos ucc inate
D) Ha s citru lline as a n interm edia te
E) All of the above are true

Question 14

The ketone bodies all derive from

A) Dihd ryoxyac eton e ph osp hate
B) Ph osp hoe nolp yruvate
C) Acetyl CoA
D) D iph os ph og lyce ric ac id
E) Glycerol

Question 15

Which o f th e fo llow ing is N O T a k eto ne bo dy?

A) Acetone
B) þ hyd ro xyb utyr ic a cid
C) Dihydro xyaceto ne ph osph ate
D) Ac eto ac etic ac id
E) None of the above