Identify the incorrect pair.

NEET-2021 [Biomolecules] [class-xi ]

• Alkaloids - Codeine
• Toxin - Abrin
• Lectins - Concanavalin A
• Drugs - Ricin
Correct Option: D  [ Drugs - Ricin ]

Remark:

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.

NEET-2021 [Biomolecules] [class-xi ]

• A and B only
• C and D only
• B and C only
• B and E only
Correct Option: C  [ B and C only ]

Remark:

Which one of the following is the most abundant protein in the animals?

NEET-(Sept)2020 [Biomolecules] [class-xi ]

• Haemoglobin
• Collagen
• Lectin
• Insulin
Correct Option: B  [ Collagen ]

Remark:

Identify the substances having glycosidic bond and peptide bond, respectively in their structure:

NEET-(Sept)2020 [Biomolecules] [class-xi ]

• Chitin, cholesterol
• Glycerol, trypsin
• Cellulose, lecithin
• Inulin, insulin
Correct Option: D  [ Inulin, insulin ]

Remark:

Identify the basic amino acid from the following.

NEET-(Sept)2020 [Biomolecules] [class-xi ]

• Tyrosine
• Glutamic Acid
• Lysine
• Valine
Correct Option: C  [ Lysine ]

Remark:

Match the following:

NEET-(Sept)2020 [Biomolecules] [class-xi ]

• (A)-(II), (B)-(IV), (C)-(III), (D)-(I)
• (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
• (A)-(III), (B)-(IV), (C)-(I), (D)-(II)
• (A)-(II), (B)-(III), (C)-(I), (D)-(IV)
Correct Option: A  [ (A)-(II), (B)-(IV), (C)-(III), (D)-(I) ]

Remark:

Match the following:

NEET-(Oct)2020 [Biomolecules] [class-xi ]

• (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
• (A)-(II), (B)-(III), (C)-(IV), (D)-(I)
• (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
• (A)-(III), (B)-(I), (C)-(II), (D)-(IV)
Correct Option: A  [ (A)-(III), (B)-(I), (C)-(IV), (D)-(II) ]

Remark:

Floridean starch has structure similar to:

NEET-(Sept)2020 [Biomolecules] [class-xi ]

• Starch and cellulose
• Amylopectin and glycogen
• Mannitol and algin
• Laminarin and cellulose
Correct Option: B  [ Amylopectin and glycogen ]

Remark:

DNA precipitation out of a mixture of biomolecules can be achieved by treatment with:

NEET-2019 [Biomolecules] [class-xi ]

• Chilled ethanol
• Isopropanol
• Methanol at room temperature
• Chilled chloroform
Correct Option: A  [ Chilled ethanol ]

Remark:

Which of the following is a commercial blood cholesterol lowering agent?

NEET-2019 [Biomolecules] [class-xi ]

• statin
• Lipases
• Streptokinase
• Cyclosporin A
Correct Option: A  [ statin ]

Remark: