Introduction to Biomolecules

Q. Number of total ATP generated in TCA cycle per acetyl CoA molecule is

1. 24
2. 14
3. 12
4. 10

Q. What is the coding sequence for restriction enzyme Hind II?

Q. Match the following secondary metabolites with their respective examples:

Column I	Column II
A. Pigments	I. Vinblastin
B. Alkaloids	II. Ricin
C. Toxins	III. Morphine
D. Drugs	IV. Anthocyanins

1. A-II, B-III, C-IV, D-I
2. A-II, B-IV, C-I, D-III
3. A-IV, B-III, C-II, D-I
4. A-IV, B-I, C-II, D-III

Q. Which of the following is not a secondary metabolite?

1. Morphine
2. Aspartic acid
3. Rubber
4. Ricin

Q. A secondary metabolite that acts as a toxin is:

1. Carotenoid
2. Curcumin
3. Abrin
4. Monoterpene

Q. Alkaloid, which is a secondary metabolite, includes

1. vinblastin and curcumin
2. monoterpenes
3. codeine
4. cellulose and gums

Q.

Name the site of photosynthesis.

Q. Match the following:

	Secondary metabolite		Example
A	Alkaloid	1	Abrin
B	Toxin	2	Morphine
C	Lectin	3	Concanavalin
D	Drug	4	Vinblastin

1. A-1, B-2, C-3, D-4
2. A-2, B-1, C-4, D-3
3. A-3, B-2, C-1, D-4
4. A-2, B-1, C-3, D-4

Q.

The six most common atoms in organic molecules are

1. C, H, O, He, Ca, and S

2. C, H, O, N, P, and S

3. C, H, O, Ca, Mg, and S

4. C, O, N, S, P, and Mg

Q. The central dogma of protein synthesis is:

1. DNA $\to$ DNA $\to$ Protein
2. RNA $\to$ DNA $\to$ Protein
3. Protein $\to$ RNA $\to$ DNA
4. DNA $\to$ RNA $\to$ Protein

Q. Which of the following is not true about secondary metabolites?

1. They have a direct role in photosynthesis, respiration and reproduction
2. They include toxins, pigments, drugs and lectins
3. Their distribution is limited and restricted to a special taxonomic group
4. They are organic compounds of diverse nature

Q.

In human body which element is most abundant by weight and by number respectively?

a) carbon, hydrogen

b) oxygen, hydrogen

c) oxygen, carbon

d) carbon, nitrogen

Q. Name a plant which lacks chlorophyll. How will it obtain nutrition?

Q. Alkaloid, which is a secondary metabolite, includes

1. vinblastin and curcumin
2. monoterpenes
3. cellulose and gums
4. codeine

Q. Which of the following is not true about secondary metabolites?

1. They have a direct role in photosynthesis, respiration and reproduction
2. Their distribution is limited and restricted to a special taxonomic group
3. They include toxins, pigments, drugs and lectins
4. They are organic compounds of diverse nature

Q.

Biological organization starts with-

1. Cellular level

2. Submicroscopic molecular level

3. Organismic level

4. Atomic level

Q. Which of the following is not a biomolecule?

1. Methane
2. Ammonia
3. HCl
4. None of the above

Q.

Arrange the biomolecules, Carbohydrates (C), Proteins (P), Lipids (L) and Nucleic acids (N) in a decreasing order of their mass percentages in the composition of biological matter of a cell.

1. P > N > L > C

2. P > N > C > L

3. P > C > L > N

4. C > N > P > L

Q. Select the odd one.

1. Vinblastin
2. Codeine
3. Carotenoid
4. Glucose

Q.

Find and write down structures of 10 interesting small molecular weight

biomolecules. Find if there is any industry which manufactures the compounds

by isolation. Find out who are the buyers.

Q. Assertion: Lipase is used in detergent formulations.
Reason: Lipase removes oily stains from laundry.

1. Both the assertion and reason are true and the reason is the correct explanation of the assertion
2. Both the assertion and reason are true but the reason is not the correct explanation for the assertion
3. The assertion is true but the reason is false
4. Both assertion and the reason are false

Q. Which of the following is a primary metabolite?

1. Carbohydrates
2. Proteins
3. Lipids
4. All of these

Q. A secondary metabolite that acts as a toxin is:

1. Carotenoid
2. Curcumin
3. Abrin
4. Monoterpene

Q.

The key element which forms the skeleton of organic molecules (on earth) is _____.

1. Hydrogen

2. Carbon

3. Water

4. Nitrogen

Q. A condensation reaction joins two molecules with a release of a molecule of:

1. ATP
2. NAD
3. Hydrogen
4. Water

Q. Which of the following are not secondary metabolities in plants?

1. Rubber, gums
2. Morphine, codeine
3. Amino acids, glucose
4. Vinblatin, curcumin

Q.

Mention the photosynthetic organ, photosynthetic organelle and photosynthetic site in a plant.

Q.

How much energy is yielded by one gram mol. of fat?

1. 6.3 kcal

2. 9.3 kcal

3. 8.3 kcal

4. 5.5 kcal

Q.

Can you attempt building models of biomolecules using commercially available atomic models (Ball and Stick models)?

Q. True or False Questions:

Plasma membrane is present in all cells.