Bio BBB Study for Exam #3 Flashcards
Covers ALL chapters!
Cyanide is a potent poison that can be used to “eliminate” an individual. Cyanide blocks Complex IV from the transferring electrons to oxygen (O2) during the electron transport chain. What would happen as a result to cyanides mechanism of action?
A. Inhibition of ATP synthesis by chemiosmosis
B. NADH and FADH2 cannot transfer to electrons to the electron transport chain
C. Cells would not be able to maintain the proton gradient within their mitochondria
D. Pyruvate oxidation and Krebs Cycle would eventually stop working
E. All of the above
E. All of the above
What is the “ultimate goal” of the electrons oxidixed from glucose during aerobic cellular respiration? (What is their purpose in the end?)
a. reducing NAD+ to NADH in glycolysis
b. driving substrate-level phosphorylation in every stage of aerobic cellular respiration
c. Producing a proton gradient for ATP synthesis in oxidative phosphorylation
d. reducing oxygen to water
e. powering all the enzymes in aerobic cellular respiration
c. Producing a proton gradient for ATP synthesis in oxidative phosphorylation
What are the products leaving pyruvate oxidation per glucose?
a. 1 FADH2, 3 NADH, 2 CO2, AND 2 ATP
b. 2 NADH, 2 CO2, AND 2 acetyl CoA
c. 1 CO2, 1 Acetyl CoA, and 1 NADH
e. 2 NADH, 2 FADH2, and 2 ATP
b.
2 NADH, 2 CO2, and 2 Acetyl CoA
Which are chemical products (molecules) that are produced in aerobic cellular respiration and fermentation?
a. carbon dioxide
b. lactic acid
c. oxygen
d. ethanol
e. FADH2
Carbon dioxide
Which is the correct statement about potential energy?
a. an example of potential energy is heat
b. potential energy is the energy of movement and motion
c. chemical energy within bonds between atoms is an example of potential energy
d. potential energy does not follow the rules of themodynamics
e. potential energy is not useful to living organisms
Chemical energy within bonds between atoms is an example of potential energy.
DNA replication is a cellular process that involves the linking of multiple nucleotides together to form a long polymer. Which characteristic best describe this process?
a. catabolic, endergonic and positive /\G
b. anabolic, exergonic, and negavative /\G
c. catbolic, exergonic, and negative /\G
d. anabolic, endergonic, and negative /\G
e. anabolic, endergonic, and positive /\G
Anabolic, endergonic, and positive /\G
Which statement is false about diffusion?
a. diffusion is the movement of molecules down their concentration gradient
b. Diffusion is the movement of molecules towards the region of higher concentration of those molecules
c. diffusion is the movement of molecules from a region of high concentration to low concentration (of those molecules)
d. diffusion is a passive form of transport
e. when diffusion is complete, it results in the uniform concentration of molecules across the entire region
Diffusion is the movement of molecules towards the region of higher concentration of those molecules
(it basically says it goes from low to high whis is wrong! it goes from hight to low!)
Which statement correctly describes carrier proteins?
A. Carrier proteins allow continuous transport of molecules from one side to the other
B. Carrier proteins don’t change shape while transporting molecules
C. Carrier proteins are used to transport mostly nonpolar molecules
D. Carrier proteins are only used for primary active transport
E. None of the above
E. None of the above
Which is the correct difference between simple diffusion and facilitated diffusion?
a. simple diffusion is active, whereas facilitated diffusion is passive
b. facilitated diffusion moves molecules up their concentration gradient, whereas simple diffusion moves molecules down their concentration gradient
c. Simple diffusion involves the movement of hydrophobic molecules, whereas facilitated diffusion involves the movement of hydrophilic molecules.
d. facilitated diffusion uses carrier proteins, whereas simple diffusion uses channel proteins
e. simple diffusion is related to endocytosis, whereas facilitated diffusion is related to exocytosis
Simple diffusion involves the movement of hydrophobic molecules, whereas facilitated diffusion involves the movement of hydrophilic molecules.
Which statment is correct about ATP hydrolysis and synthesis?
ATP synthesis is made possibly by the catabolism of organic compounds within the cell.
Which statement is incorrect about glycolysis?
a. Glycolysis requires NAD+ and FAD to oxidize glucose
b. glycolysis is a 10-step metabolic pathway
c. each metabolic reaction in glycolysis is catalyzed by a different enzyme
d. glycolysis invests 2 ATP at the beginning and gains 4 ATP as energy pay-off later
e. glycolysis occurs outside of the mitochondrion
a. Glycolysis requires NAD+ and FAD to oxidize glucose
Per glucose molecule, what are the molecules entering the Krebs/citric acid cycle (as the input)?
a. 1C6H12O6, 2 NAD+, and 2 ATP
b. 6 O2, 10 NADH, and 2 FADH2
c. 2 FADH2, 6 NADH, 4 CO2, and 2 ATP
d. 2 CO2, 2 CoA, and 2 NADH
e. 6 NAD+, 2 FAD, and 2 Acetyl CoA
6 NAD+, 2 FAD, and 2 Acetyl CoA
Which statement corretly differentiates aerobic cellular respiration from fermentation?
a. aerobic cellular respiration produces fewer ATP molecules per glucose molecule than fermentation.
b. alcohol fermentation is the complete oxidation glucose, whereas aerobic cellular respiration is the incomplete oxidation of glucose
c. Aerobic cellular respiration produces more carbon dioxide molecules per glucose than alcohol fermentation
d. aerobic cellular respiration uses an organic electron acceptor, whereas fermentation uses an inorganic electron acceptor
e. lactic acid fermentation requires redox reactions, whereas aerobic cellular respiration does not utilize redox reaction
c.
Aerobic cellular respiration produces more carbon dioxide molecules per glucose than alcohol fermentation
What does ATP stand for?
Adenosine Triphosphate
What is the purpose of aerobic cellular respiration?
Catabolism of glucose using oxygen to generate ATP.
