EASY
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Which is true about the lipids? 

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Important Questions on Biomolecules

MEDIUM

Following are the statements with reference to 'lipids'.
(a) Lipids having only single bonds are called unsaturated fatty acids.
(b) Lecithin is a phospholipid.
(c) Trihydroxy propane is glycerol.
(d) Palmitic acid has 20 carbon atoms including carboxyl carbon.
(e) Arachidonic acid has 16 carbon atoms.

Choose the correct answer from the options given below.

MEDIUM
Match the following lists.
  List-I   List-II
(A) Glycerol (I) Phospholipid
(B) Aromatic amino acid (II) Lower melting point
(C) Lecithin (III) Trihydroxypropane
(D) Gingelly oil (IV) Tryptophan
The correct match is:
MEDIUM
Phospholipids are formed by the esterification of:
EASY
Which one of the following is NOT an unsaturated fatty acid?
MEDIUM

Match List - I with List- II.

Column-I Column-II
(a) Protein (i) C=C double bonds
(b) Unsaturated fatty acid (ii) Phosphodiester bonds
(c) Nucleic acid (iii) Glycosidic bonds
(d) Polysaccharide (iv) Peptide bonds
Choose the correct answer from options given below.
MEDIUM

Read the following statements on lipids and find out the correct set of statements:

(a) Lecithin found in the plasma membrane is a glycolipid.

(b) Saturated fatty acids possess one or more C=C bonds.

(c) Gingelly oil has a lower melting point, and hence remains as oil in winter.

(d) Lipids are generally insoluble in water but soluble in some organic solvents.

(e) When a fatty acid is esterified with gIycerol, monoglycerides are formed.

Choose the correct answer from the options given below:

MEDIUM

Represent the union of two sets by Venn diagram for each of the following.

X={x | x is a prime number between 80 and 100}

Y={y | y is an odd number between 90 and 100}

EASY
Given molecular formula belongs to which of the following groups of biomolecules?
Question Image
MEDIUM
Which of the following is incorrect with respect to saturated fatty acids?
EASY
Which of the following is an example of saturated fatty acid?
MEDIUM
Why do phospholipids produce bilayer in contact with water?
MEDIUM
An unknown liquid collected from a sample of peas is added to a beaker of water and is vigorously shaken. After a few minutes, water and the unknown liquid made two separate layers. To which class of biomolecules does the unknown liquid most likely belongs?
EASY
What are phospholipids? Briefly discuss their structure, properties and functions.