Bio 172 Exam 2 Questions with correct
Answers
What
/are /three /ways /energy /is /extracted /from /glucose? /- /correct /answers✔✔ /Glycolysis, /Citric /Acid
/Cylce, /Oxidative /Phosphorylation
What
/enzyme
/in
/the
/investment
/phase
/of
/glycolysis
/is
/responsible
/for
/cosumeing /ATP /to /break /down /carbohydrates? /- /correct /answers✔✔ /Phosphofruktokinase
How
/many
/binding
/sites
/does
/phosphfruktokinase
/have?
/What
/binds /there? /- /correct /answers✔✔ /It /has /a /regulatory /and /active /site. /Both /bind /to /ATP.
When
/ATP
,/binds
/at
/phosphfruktokinase's
/regulatory
/site,
/what
/happens
/to /the /reaction /rate? /- /correct /answers✔✔ /It /decreases, /ATP /inhibits /phosphfruktokinase
Feedback
/inhibition /-
/correct
/answers✔✔
/When
/the
/product
/of /
a
/sequence
/of /reactions /can /be /used /to /allosterically /inhibit /on /of /the /enzymes /catalyzing /the /reaction.
Phase /
1
/Glycolysis /-
/correct /answers✔✔ /The /energy /investment /phase. /Two /ATP /are /consumed. /Fructose-1,6-
Biphosphate /is /the /product.
Phase /2 /glycolysis /- /correct /answers✔✔ /The /Cleavage /phase. /Fructose-1,6-
Biphosphate /is /cleaved /into /two /glyceraldehyde-3-phosphates. /No /ATP /consumption.
Phase /
3
/Glycolysis /-
/correct /answers✔✔ /The /Payoff /phase. /2 /NADH /and /4 /ATP /produced. /Pyruvate /formed.
, Net /Products /of /Glycolysis /- /correct /answers✔✔ /2 /Pyruvate
2 /NADH
2 /ATP
How /is /ATP /created /in /Glycolysis? /- /correct /answers✔✔ /Substrate /Level /Phosphorylation
Substrate
/Level
/Phosphorylation /-
/correct
/answers✔✔
/The
/use
/of /a /chemical /substrate /to /transfer /a /phosphate /directly /to /an /ADP /molecule /and /form /ATP.
Net
/Equation
/for
/Glycolysis /-
/correct /answers✔✔ /C₆H₁₂0₆ /+ /2 /NAD⁺ /+ /2 /ADP /+ /P /→ /2 /Pyruvate /+ /2 /NADH /+ /2 /H⁺ /+ /2 /ATP
Where /does /Glycolysis /Occur? /- /correct /answers✔✔ /The /Cytosol
Where /does /pyruvate /go /what /oxygen /is /present? /- /correct /answers✔✔ /To /Acetyl-
CoA /synthesis /and /then /to /the /Citric /Acid /Cycle
Where /does /pyruvate /go /when /oxygen /isn't /present? /- /correct /answers✔✔ /To /fermentation
How /is /glycolysis /linked /to /the /citric /acid /cycle? /- /correct /answers✔✔ /Acetyl-CoA /synthesis
Answers
What
/are /three /ways /energy /is /extracted /from /glucose? /- /correct /answers✔✔ /Glycolysis, /Citric /Acid
/Cylce, /Oxidative /Phosphorylation
What
/enzyme
/in
/the
/investment
/phase
/of
/glycolysis
/is
/responsible
/for
/cosumeing /ATP /to /break /down /carbohydrates? /- /correct /answers✔✔ /Phosphofruktokinase
How
/many
/binding
/sites
/does
/phosphfruktokinase
/have?
/What
/binds /there? /- /correct /answers✔✔ /It /has /a /regulatory /and /active /site. /Both /bind /to /ATP.
When
/ATP
,/binds
/at
/phosphfruktokinase's
/regulatory
/site,
/what
/happens
/to /the /reaction /rate? /- /correct /answers✔✔ /It /decreases, /ATP /inhibits /phosphfruktokinase
Feedback
/inhibition /-
/correct
/answers✔✔
/When
/the
/product
/of /
a
/sequence
/of /reactions /can /be /used /to /allosterically /inhibit /on /of /the /enzymes /catalyzing /the /reaction.
Phase /
1
/Glycolysis /-
/correct /answers✔✔ /The /energy /investment /phase. /Two /ATP /are /consumed. /Fructose-1,6-
Biphosphate /is /the /product.
Phase /2 /glycolysis /- /correct /answers✔✔ /The /Cleavage /phase. /Fructose-1,6-
Biphosphate /is /cleaved /into /two /glyceraldehyde-3-phosphates. /No /ATP /consumption.
Phase /
3
/Glycolysis /-
/correct /answers✔✔ /The /Payoff /phase. /2 /NADH /and /4 /ATP /produced. /Pyruvate /formed.
, Net /Products /of /Glycolysis /- /correct /answers✔✔ /2 /Pyruvate
2 /NADH
2 /ATP
How /is /ATP /created /in /Glycolysis? /- /correct /answers✔✔ /Substrate /Level /Phosphorylation
Substrate
/Level
/Phosphorylation /-
/correct
/answers✔✔
/The
/use
/of /a /chemical /substrate /to /transfer /a /phosphate /directly /to /an /ADP /molecule /and /form /ATP.
Net
/Equation
/for
/Glycolysis /-
/correct /answers✔✔ /C₆H₁₂0₆ /+ /2 /NAD⁺ /+ /2 /ADP /+ /P /→ /2 /Pyruvate /+ /2 /NADH /+ /2 /H⁺ /+ /2 /ATP
Where /does /Glycolysis /Occur? /- /correct /answers✔✔ /The /Cytosol
Where /does /pyruvate /go /what /oxygen /is /present? /- /correct /answers✔✔ /To /Acetyl-
CoA /synthesis /and /then /to /the /Citric /Acid /Cycle
Where /does /pyruvate /go /when /oxygen /isn't /present? /- /correct /answers✔✔ /To /fermentation
How /is /glycolysis /linked /to /the /citric /acid /cycle? /- /correct /answers✔✔ /Acetyl-CoA /synthesis
