BB450 Exam 4 questions with complete
solutions graded A+
The pentose pathway is generally considered - correct answer ✔✔an intersection
of other pathways
Glycolysis is the - correct answer ✔✔primary energy source for all cells
central metabolic pathway
occurs in the cytoplasm
Glycolysis is - correct answer ✔✔biphasic
Glycolysis produces - correct answer ✔✔2 pyruvate, 2 ATP, and 2 NADH
Phase 1 of glycolysis - correct answer ✔✔ATP investment
Phase 2 of glycolysis - correct answer ✔✔Energy production
1st step of glycolysis: - correct answer ✔✔GLU --> G6P
regulated step of glycolysis
catalyzed by hexokinase
Hexokinase is inhibited by - correct answer ✔✔G6P product
,Hexokinase is found in - correct answer ✔✔virtually all cells
nonspecific to glucose
2nd step of glycolysis: - correct answer ✔✔G6P --> F6P
reversible reaction
catalyzed by phosphoglucoisomerase
REVERSE step (in glycolysis) that is catalyzed by phosphoglucoisomerase - correct
answer ✔✔G6P isomerase
3rd step of glycolysis: - correct answer ✔✔F6P --> F1,6 BP
catalyzed by phosphofurctokinase
important regulatory enzyme of glycolysis
Phosphofructokinase is activated/inhibited by - correct answer ✔✔Activated by
AMP and F2,6 BP
inhibited by ATP
Phosphofructokinase has 2 - correct answer ✔✔binding sites for ATP
4th step of glycolysis: - correct answer ✔✔F1,6 BP --> GA3P (glyceraldehyde-3-
phosphate) + DHAP (dihydroxyacetone Phosphate)
catalyzed by aldolase
, with the 4th step in glycolysis, F1,6 BP --> GA3P + DHAP, there is a - correct answer
✔✔energy barrier, which created a pushing and pulling type rection
5th step in glycolysis - correct answer ✔✔DHAP --> GA3P
catalyzed by Triose Phosphate Isomerase
readily reversible
diffusion limited enzyme
perfect enzyme
____ helped evolve the perfect enzyme - correct answer ✔✔toxic intermediate
6th step in glycolysis - correct answer ✔✔GA3P --> 1,3 BPG
catalyzed by Glyceraldehyde-3-phosphate dehydrogenase (GA3PDH)
only oxidation reaction in glycolysis
7th step in glycolysis - correct answer ✔✔1,3 BPG --> 3-PG
catalyzed by Phosphoglycerate kinase
substrate level phosphorylation
3 ways to make ATP - correct answer ✔✔1. Substrate-level phosphorylation
2. Oxidative phosphorylation
3. Photophosphorylation
solutions graded A+
The pentose pathway is generally considered - correct answer ✔✔an intersection
of other pathways
Glycolysis is the - correct answer ✔✔primary energy source for all cells
central metabolic pathway
occurs in the cytoplasm
Glycolysis is - correct answer ✔✔biphasic
Glycolysis produces - correct answer ✔✔2 pyruvate, 2 ATP, and 2 NADH
Phase 1 of glycolysis - correct answer ✔✔ATP investment
Phase 2 of glycolysis - correct answer ✔✔Energy production
1st step of glycolysis: - correct answer ✔✔GLU --> G6P
regulated step of glycolysis
catalyzed by hexokinase
Hexokinase is inhibited by - correct answer ✔✔G6P product
,Hexokinase is found in - correct answer ✔✔virtually all cells
nonspecific to glucose
2nd step of glycolysis: - correct answer ✔✔G6P --> F6P
reversible reaction
catalyzed by phosphoglucoisomerase
REVERSE step (in glycolysis) that is catalyzed by phosphoglucoisomerase - correct
answer ✔✔G6P isomerase
3rd step of glycolysis: - correct answer ✔✔F6P --> F1,6 BP
catalyzed by phosphofurctokinase
important regulatory enzyme of glycolysis
Phosphofructokinase is activated/inhibited by - correct answer ✔✔Activated by
AMP and F2,6 BP
inhibited by ATP
Phosphofructokinase has 2 - correct answer ✔✔binding sites for ATP
4th step of glycolysis: - correct answer ✔✔F1,6 BP --> GA3P (glyceraldehyde-3-
phosphate) + DHAP (dihydroxyacetone Phosphate)
catalyzed by aldolase
, with the 4th step in glycolysis, F1,6 BP --> GA3P + DHAP, there is a - correct answer
✔✔energy barrier, which created a pushing and pulling type rection
5th step in glycolysis - correct answer ✔✔DHAP --> GA3P
catalyzed by Triose Phosphate Isomerase
readily reversible
diffusion limited enzyme
perfect enzyme
____ helped evolve the perfect enzyme - correct answer ✔✔toxic intermediate
6th step in glycolysis - correct answer ✔✔GA3P --> 1,3 BPG
catalyzed by Glyceraldehyde-3-phosphate dehydrogenase (GA3PDH)
only oxidation reaction in glycolysis
7th step in glycolysis - correct answer ✔✔1,3 BPG --> 3-PG
catalyzed by Phosphoglycerate kinase
substrate level phosphorylation
3 ways to make ATP - correct answer ✔✔1. Substrate-level phosphorylation
2. Oxidative phosphorylation
3. Photophosphorylation
