The metabolic pathways in a living system:
I. are linear or circular                                   
II. are series of linked reactions
III. are characterized by a definite rate and direction of flow of metabolites through them
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
 72%
Level 2: 60%+
Hints

An example of a metabolic conversion not catalyzed by an enzyme in a living system will be:
1. formation of a peptide bond
2. carbon dioxide dissolving in water
3. crossing over in meiosis
4. None, as there is no un-catalyzed metabolic conversion in living systems
 67%
Level 2: 60%+
Hints

Which of the following molecules is involved in the synthesis of cholesterol?
1. Tyrosine
2. Acetic acid
3. Gamma amino butyric acid
4. Tryptophan
 60%
Level 2: 60%+
Hints

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The number of metabolic steps in the glycolytic pathway is:
1.  5
2.  9
3. 10
4. 11
 84%
Level 1: 80%+
Hints

The most important form of energy currency in living systems is the bond energy in a chemical called:
1. ATP
2. Creatine phosphate
3. Acetyl CoA
4. Glucose
 91%
Level 1: 80%+
Hints