1. Which one of the following statement is incorrect?
a) Primary metabolites have identifiable functions.
b) Some secondary metabolites have ecological importance.
c) Secondary metabolites like rubber, drugs, spices, scents and pigments are useful to human
welfare.
d) Secondary metabolites are not found in fungi, microbes and plants.
Explanation: "Secondary metabolites are not found in fungi, microbes and plants". This is incorrect.
2. Which of the following are pigments?
a) Morphine
b) Vinblastine
c) Carotenoids and anthocyanin
d) Ricin
Explanation: Carotenoids and anthocyanin
3. Which one of the following is not a polymeric substance?
a) Rubber
b) Morphine
c) Protein
d) Cellulose
Explanation: Morphine
4. Which of the following secondary metabolites are used as drugs?
a) Abrin + Ricin
b) Vinblastin + Curcumin
c) Anthocyanins
d) Monoterpenes
Explanation: Vinblastin + Curcumin
5. Which one of the following is a secondary metabolite?
a) Lemon oil grass
b) Sucrose
c) Lactose
d) Glycine
Explanation: Lemon oil grass is a secondary metabolite
6. Match the Column
Column I Column II
(Category) (Secondary Metabolites)
A. Pigments – 1. Concanavalin A
B. Terpenoids – 2. Monoterpenes, Diterpenes
C. Alkaloids – 3. Morphine, Codeine
D. Lectins – 4. Carotenoids, Anthocyanine
E. Toxins – 5. Abrin and Ricin
F. Drugs – 6. Vinblastin, Curcumin
a) A–1, B–2, C–6, D–4, E–5, F–6
b) A–4, B–2, C–3, D–1, E–5, F–6
c) A–3, B–4, C–6, D–5, E–1, F–2
d) A–2, B–1, C–4, D–6, E–5, F–6
Explanation: A–4, B–2, C–3, D–1, E–5, F–6
7. Which one of the following are secondary metabolites?
a) Flavonoids and rubber
b) Antibiotics, coloured pigments and essential oils
c) Scents, gums, spices
d) All of above
Explanation: All of above
8. Select the incorrect statement from the following:
a) All biomolecules have turnover in cell.
b) Metabolic reaction does not occur in isolation.
c) Metabolic pathways are either linear or circular.
d) Metabolites flow is a steady state of body constituent.
Explanation: "Metabolites flow is a steady state of body constituent". This is incorrect.
9. Select the incorrect statement from the following:
a) Acetic acid becoming cholesterol is an example of biosynthetic or anabolic pathway.
b) Glucose becoming lactic acid in our skeletal muscles is an example of degradation or
catabolic pathway.
c) The flow of metabolite through metabolic pathway does not have a definite rate and
direction.
d) Anabolic pathway requires energy whereas catabolic pathway releases energy.
Explanation: "The flow of metabolite through metabolic pathway does not have a definite rate and direction". This is incorrect.
10. Bond energy, which is stored in our body in the form of ATP is utilized in
a) Biosynthetic phase
b) Osmotic work
c) Mechanical work
d) All of these
Explanation: All of these