Chapter 7
Supplemental Instruction
Iowa State University
Leader:
Course:
Instructor:
Date:
Shanna
BIOL 212
Kukday
2/7/14
ATP synthase requires an input of energy to synthesize ATP, describe where it gets this energy from.
Fill in the blank:
•
_________________ is the first step of cell respiration that yields _____ (#) _____________(product) in
a (#)_____-step process.
•
Glycolysis takes place in the ______________ of the cell.
•
________ _______ _______ and __________ __________ occur in the mitochondrion.
•
_________________ is the ultimate electron acceptor.
•
Transferring the phosphate from a phosphorylated substrate directly to ADP to make ATP is called
____________-________ ________________.
•
__________ carries electrons from glycolysis and citric acid cycle to oxidative phosphorylation while
__________ only carries electrons from citric acid cycle to oxidative phosphorylation.
•
Oxidative phosphorylation consists of ____________ ____________ and ______________.
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A drug is designed to make the glycolytic pathway more productive. What part of the
cell would the drug need to be delivered to for it to directly affect this pathway?
a.
b.
c.
d.
e.
mitochondrial matrix
cytosol
mitochondrial intermembrane space
nucleus
chloroplast
What molecule is produced by glycolysis, and is then imported into the mitochondria
to enter into the TCA cycle?
a. Glucose
b. NADPH
c. Pyruvate
d. Citric Acid
ATP generated during glycolysis are formed by which mechanism, substrate-level phosphorylation or oxidative
phosphorylation?
a. Substrate level
b. Oxidative phosphorylation
A proton ionophore is a substance that creates a proton leak in a membrane. What
might you predict that a proton ionophore would do in mitochondria?
a.
b.
c.
d.
nothing
greater proton motive force
Block electrons from being transported from one carrier to another
Prevent synthesis of ATP
A drug that increases the number of NADH & FADH2 molecules produced through
the citric acid cycle/Krebs cycle and has no other effects on the cell would
theoretically
a.
b.
c.
d.
e.
decrease the activity of ATP synthase
decrease the cell’s ability to manufacture glycerol
increase the number of ATPs produced per glucose
increase lactic acid production
decrease the cell’s need for oxygen
A substance that increases the number of protons (H+) in the mitochondrial matrix
(and has no other effect on the cell) would theoretically ____.
a.
b.
c.
d.
e.
increase the ATP yield of glycolysis
decrease ATP yield in the citric acid cycle/Krebs cycle
inhibit pyruvate metabolism
decrease the ATP yield in oxidative phosphorylation
increase the ATP yield of fermentation