Fats

Q. A typical fat molecule is made up of:

1. Three glycerol molecules and one fatty acid molecule
2. One glycerol and one fatty acid molecule
3. One glycerol and three fatty acid molecules
4. Three glycerol and three fatty acid molecules

Q.

what is the basic structure and function of lipids?

Q. Unsaturated fatty acids have _________.

1. Oleic acid
2. High melting point
3. One or more double bonds
4. Palmitic acid

Q.

How are lipids formed?

Q. Identify a fat from the market?

Q. Read the assertion and reason carefully to mark the correct option in question.
Assertion: A bud is present in the axil of petiole of both simple and compound leaves but not in the axil of leaflets of the compound leaf.
Reason: The stem bears buds, which may be terminal or axillary. The axillary bud later develops into a branch.

1. If the assertion is true but the reason is false.
2. If both assertion and reason are true and the reason is the correct explanation of the assertion.
3. If both assertion and reason are true but reason is not the correct explanation of the assertion.
4. If both assertion and reason are false.

Q. Name the enzymes which converts the following:
(i) fats into fatty acids.

Q.

_____ are insoluble in water but soluble in an organic solvents.

1. Saccharides

2. Lipids

3. Nucleic acids

4. Proteins

Q. _______ number of fatty acid residues constitute one molecule of fat or triglyceride.

1. 3
2. 4
3. 2
4. 1

Q. Identify the given structure.

1. Adenylic acid
2. Uracil
3. Cholesterol
4. Adenosine

Q. Name the enzyme which converts the following
ii) Fats - Fatty acids + Glycerol.

Q.

Fats or triglycerides are formed by:

1. condensation reaction between the carboxylic acid groups of glycerol and fatty acids

2. polymerization of fatty acids

3. condensation of H group of glycerol and OH of fatty acid

4. the COOH group of glycerol and H of fatty acid

Q. Which of the following contain(s) unsaturated fatty acids?

1. Sunflower oil
2. Butter
3. Ghee
4. All of these

Q. Most animal lipids are composed of ________ fatty acids whereas most plant lipids are composed of _______ fatty acids.

1. unsaturated; saturated
2. saturated; unsaturated
3. saturated; saturated
4. unsaturated; unsaturated

Q. Hydrophobic end of phospholipid has

1. affinity for water
2. non affinity for water
3. affinity for metabolites
4. non affinity for metabolites

Q. A Phosphoglyceride is always made up of:

1. A saturated or unsatrurated fatty acid esterified to a phosphate group which is also attached to a glycerol molecule
2. A saturated or unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached
3. Only a saturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached
4. Only an unsaturated to which a phosphate group is also attached

Q. Human proteins can be produced in milk or semen of farm animals.

1. True
2. False, proteins cannot be produced in milk
   
3. False, proteins cannot be produced in semen
   
4. False, animals are not used for protein production
   

Q. Most ecologically relevant environmental factor is

1. Water
2. Soil
3. Temperature
4. Light

Q. Which of the following contain(s) unsaturated fatty acids?

1. Sunflower oil
2. Butter
3. All of these
4. Ghee

Q. Which one of the following statements about fats is incorrect?

1. They are sparingly or not at all soluble in water but dissolve in an organic solvent
2. The melting point of fats depends upon the chain length of the constituent fatty acid
3. They float on water as their specific gravity is less than 1
4. They can be absorbed without emulsification

Q. Emulsification of fats is due to

1. Pepsin
2. Cholesterol
3. Both A and B
4. None of the above

Q. Fat is hydrolysed by the enzyme lipase to yield

1. fatty acid and amino acids
2. glycerol and fatty acids
3. glycerine and water
4. glycerol and amino acids

Q. Most animal lipids are composed of ________ fatty acids whereas most plant lipids are composed of _______ fatty acids.

1. unsaturated; saturated
2. saturated; unsaturated
3. saturated; saturated
4. unsaturated; unsaturated

Q. The buds which arise at places other than nodes are called

1. accessory buds
2. lateral buds
3. floral buds
4. adventitious buds

Q. Which of the following statements are true?
(a) Proteins are the heteropolymer of $\alpha$-amino acid.
(b) Sugar found in nucleic acid, is in the form of $\beta$-form.
(c) Nucleic acids show acidic nature.
(d) 5-methyl uracil binds with the first carbon atom of the ribose sugar.
(e) Collagen is the most abundant protein in the plant world.

1. a, b, e
2. a, b, d
3. b, c, d, e
4. a, b, c

Q. Which one of the following statements about fats is incorrect?

1. The melting point of fats depends upon the chain length of the constituent fatty acid
2. They are sparingly or not at all soluble in water but dissolve in an organic solvent
3. They float on water as their specific gravity is less than 1
4. They can be absorbed without emulsification

Q. Which one of these is a carbohydrate?

1. Glycerol
2. Maltase
3. All the above
4. Sucrose

Q. Find out which on is an incorrect match:

1. Endopeptidase – Pepsin-like enzyme
   
2. Exopeptidase – Amylopsin
3. Pancreatic lipase – Steapsin
4. Nucleases – Ribonuclease

Q. Choose the best option to fill in the blank:
Do you get a lot of _______ on your computer?

1. junk mails
2. junks mail
3. junk mail
4. junks mails

Q.

Match the following molecules with their subunits

Column I		Column II
1. Amino acid		a. Uridine
2. Nucleoside		b. Palmitate
3. Carbohydrate		c. Ribose
4. Fatty acid		d. Adenylic acid
		e. Alanine

1. 1.⇒ d, 2.⇒ c, 3.⇒ b, 4.⇒ a.

2. 1.⇒ e, 2.⇒ a, 3.⇒ c, 4.⇒ b.

3. 1.⇒ c, 2.⇒ d, 3.⇒ a, 4.⇒ b.

4. 1.⇒ b, 2.⇒ a, 3.⇒ d, 4.⇒ c.