MICROBIOLOGY PORTAGE LEARNING
COMPLETE MODULE 6 2023/2024 REAL EXAM
QUESTIONS AND CORRECT ANSWERS GRADED
A
1). True or false
metabolism is a controlled set of biochemical reactions that occur in living organisms in
order to maintain life.
Ans: True
2). True or false
enzymes are polysaccharides that catalyze chemical reactions
Ans: False
3). What is a cofactor?
Ans: Small chemical component that assists an enzyme during catalysis reactions.
4). Example of cofactor
Ans: Metal ions
5). Anabolism
Ans: Process of building up or biosynthesis of macromolecules from small molecular
units into much larger complexes
6). In order to convert proteins into amino acids which metabolic process would be active?
Ans: Catabolism because this process is breakdown of proteins
7). Describe energy transfer process relative to both atp & adp
PaperStoc.com Page 1 of 7
, Ans: ATP has energy (phosphate) to donate
ADP can accept energy (phosphate group) to become ATP
8). From what source do chemotrophs acquire energy?
Ans: Preformed chemicals found in the environment
9). An organism that derives its energy by removing electrons from elemental sulfur would be
classified as a _________?
Ans: Lithotroph
10). This phosphorylation process occurs in the mitochondria of chemotropic eukaryotes.
substrate-level phosphorylation
oxidative phosphorylation
photophosphorylation
Ans: Oxidative Phosphorylation
11). The catabolism of a single molecule of glucose goes through what 3 distinct transitions?
Ans: Glycolysis
Respiration or Fermentation
Electron Transport Chain (ETC)
12). What is the most energetic transition in catabolism of glucose?
Ans: Electron transport chain (ETC) yields 34 ATP
13). Identify reactants of following chemical equation:
glucose + 2nad+ → 2nadh + 2 pyruvate + 2atp
Ans: Glucose
2NAD+
PaperStoc.com Page 2 of 7