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PORTAGE MICROBIOLOGY LECTURE EXAM 2 2024 QUESTIONS AND ANSWERS
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PORTAGE MICROBIOLOGY LECTURE EXAM 2 2024 QUESTIONS AND ANSWERS
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PORTAGE MICROBIOLOGY LECTURE EXAM2
The catabolism of a single molecule of glucose goes through what 3 distinct
transitions?
1. Glycolysis
2. Fermentation or Respiration
3. Electron Transport Chain
What is the most energetic transition in the catabolism of glucose?
Throughout the electron transport chain up to 34 molecules of ATP are formed.
Glycolysis and fermentation/respiration each yield only 2 STP.
In order to convert proteins into amino acids which metabolic process would be
active?
Catabolism
Define catabolism
breakdown of larger molecules into subunits
How many ATP does the tricarboxylic acid (TCA) cycle produce per pyruvate?
A. 1 ATP
,B. 2 ATP
C. 4 ATP
D. 34 ATP
A
True or False. The β-oxidation pathway catabolizes the fatty acid chains of lipids.
True
True or False. Metabolism is a controlled set of biochemical reactions that occur
in living organisms in order to maintain life.
True
What is the term for metal ions that assist enzymes during the catalysis reaction?
Cofactor
True or False: The Calvin cycle must occur in the absence of light.
False
Describe the energy transfer process relative to both ATP and ADP.
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.
Identify the reactants of the following chemical equation:
Glucose + 2NAD+ → 2 NADH + 2 Pyruvate + 2 ATP
Glucose, 2NAD+
True or False. The reactants of the TCA cycle directly enter and fuel the electron
transport system.
False
The process of carbon fixation begins with which of the following reactants: select
all that apply.
A. ATP
B. Glyceraldehyde-3-phosphate
C. CO2
D. NADPH
E. H2O
A, B, C, D, E
In phosphorylation, the light reactions always occur where?
The process of converting light energy into chemical energy
(photophosphorylation) always occurs in the membrane.
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