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PORTAGE MICROBIOLOGY
LECTURE EXAM 2 QUEST IONS
WITH VERIFIED ANSWER S
Question :True or False. The β-oxidation pathway
catabolizes the fatty acid chains of lipids.
Correct answer:True
Question :True or False. Metabolism is a controlled set of
biochemical reactions that occur in living organisms in order to maintain life.
Correct answer:True
Question :What is the term for metal ions that assist
enzymes during the catalysis reaction?
Correct answer:Cofactor
Question :The catabolism of a single molecule of glucose
goes through what 3 distinct transitions?
Correct answer:1. Glycolysis
- Fermentation or Respiration
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- Electron Transport Chain
Question :What is the most energetic transition in the
catabolism of glucose?
Correct answer:Throughout the electron transport chain
up to 34 molecules of ATP are formed. Glycolysis and fermentation/respiration each yield only 2 STP.
Question :In order to convert proteins into amino acids
which metabolic process would be active?
Correct answer:catabolism
Question :Define catabolism
Correct answer:breakdown of larger molecules into
subunits
Question :How many ATP does the tricarboxylic acid
(TCA) cycle produce per pyruvate?
A. 1 ATP
B. 2 ATP
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C. 4 ATP
D. 34 ATP
Correct answer:A
Question :True or False: The Calvin cycle must occur in the absence of light.
Correct answer:false
Question :Describe the energy transfer process relative to
both ATP and ADP.
Correct answer:ADP undergoes phosphorylation to
become energy-rich ATP. A phosphoryl group is added to ADP by way of photophosphorylation, substrate-level phosphorylation, or oxidative-level phosphorylation. ATP is hydrolyzed in order to become ADP.
Question :Identify the reactants of the following chemical
equation:
Glucose + 2NAD+ → 2 NADH + 2 Pyruvate + 2 ATP
Correct answer:Glucose, 2NAD+
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Question :True or False. The reactants of the TCA cycle
directly enter and fuel the electron transport system.
Correct answer:False
Question :The process of carbon fixation begins with
which of the following reactants: select all that apply.
A. ATP
- Glyceraldehyde-3-phosphate
C. CO2
D. NADPH
E. H2O
Correct answer:A, B, C, D, E
Question :In phosphorylation, the light reactions always
occur where?
Correct answer:The process of converting light energy
into chemical energy (photophosphorylation) always occurs in the membrane.