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Micro Chapter 5
Test Description: Energy
Instructions: Answer all questions to get your test result.
1) What is the fate of pyruvic acid in an organism that uses aerobic respiration?
A
It reacts with oxaloacetate to form citrate.
B
It is converted into acetyl CoA.
C
It is reduced to lactic acid.
D
It is oxidized in the electron transport chain.
2) Which of the following is the best definition of oxidative phosphorylation?
A
A proton gradient allows hydrogen ions to flow back into the cells through transmembrane protein channels, releasing energy t
B
Electrons are passed through a series of carriers to an organic compound.
C
ATP is directly transferred from a substrate to ADP.
D
None of these
3) The advantage of the pentose phosphate pathway is that it produces all of the following EXCEPT
A
NADPH.
B
precursors for the synthesis of amino acids.
C
precursors for the synthesis of glucose.
D
three ATPs.
4) Increasing the temperature of a reaction will do all of the following EXCEPT
A
increase the number of molecular collisions.
B
increase the activation energy.
C
All of these are true
D
increase the reaction rate.
5) Which of the following statements regarding the Entner-Doudoroff pathway is TRUE?
A
It involves the pentose phosphate pathway.
B
NADH is generated, but not ATP.
C
It involves glycolysis.
D
NADH and ATP are generated.
6) Which process produces alcohol or lactate?
A
Fermentation
B
Citric acid cycle
C
Glycolysis
D
Electron transport chain
7) Carbon dioxide is released during which of the following stages of cellular respiration?
A
Oxidative phosphorylation
B
Synthesis of NAD+
C
Glycolysis
D
Kreb cycle
8) Where is the energy used in photosynthesis obtained?
A
Sugar
B
Light
C
ATP
D
Oxygen
9) What are the tiny disk like structures in chloroplasts that contain chlorophyll?
A
NADPH
B
Calvin cycle
C
Thylakoid
D
RuBisCo
10) The product(s) of the light-dependent reaction of photosynthesis is/are
A
ATP only
B
NAPH only
C
All of these
D
O2 only
11) During the cyclic reaction of the light dependent photosystem, this/these are produced
A
All of these
B
ATP only
C
O2 only
D
NADPH only
12) The light-independent reaction of photosynthesis us ATP, NADPH, and CO2 to make sugars/carbs
A
False
B
True
13) Enzymes increase the speed of a chemical reaction by
A
Increasing the energy of activation
B
Increasing the frequency of collisions of the reactants
C
Decreasing the frequency of collisions of the reactants
D
Lowering the energy of activation
14) In the Calvin-Benson cycle,
A
Light is required
B
ATP is formed
C
Carbon dioxide is used to synthesize sugars
D
Oxygen is used to synthesize sugars
15) In cyclic photophosphorylation, the electrons
A
Return to chlorophyll
B
Are incorporated in NADPH
C
Are converted to glucose
D
Are converted to ATP
16) ETC (electron transport chain) in eukaryotes occurs on the cristae in the mitochondria, while in prokaryotes the enzyme complexes are located on the plasma membrane.
A
True
B
False
*select an answer for all questions
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