In which one of the following sets of three items each belong to the category mentioned against them?

(1) Lysine, glycine, thiamine - amino acids

(2) Myosin, oxytocin and gastrin -hormones

(3) Rennin, helicase and hyaluronidase - enzymes

(4) Optic nerve, oculomotor, vagus - sensory nerves

Subtopic:  Enzymes Classification |
AIIMS - 2006
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The figure given below shows three velocity substrate concentration curves for an enzyme reaction. What do the curves a, b,  and c depict respectively?

(1) a - normal enzyme reaction

     b - competitive inhibition

     c - non-competitive inhibition

(2) a - enzyme with an allosteric modulator added

     b - normal enzyme activity

     c - competitive inhibition

(3) a - enzyme with an allosteric stimulator

     b - competitive inhibition added

     c - normal enzyme reaction

(4) a - normal enzyme reaction

     b - non-competitive inhibitor added

     c - allosteric inhibitor added

Subtopic:  Properties of Enzymes |
AIIMS - 2006
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Which of the following contain β-1, 4 linkage?

(1) Maltose

(2) Sucrose

(3) Lactose

(4) Fructose

Subtopic:  Carbohydrates: Glycosidic Bond & Disaccharide |
AIIMS - 2007
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Enzymes, vitamins and hormones can be classified into a single category of biological chemicals because of all of these

(1) enhance oxidative metabolism

(2) are conjugated proteins

(3) arc exclusively synthesised in the body of a living organism as at present

(4) help in regulating metabolism.

 54%
AIIMS - 2008
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Cut surfaces of fruit and vegetables often become dark because

(1) dirty knife makes it dark

(2) oxidation of tannic acid in the presence of a trace of iron from the knife makes it dark

(3) dust of the air makes it dark

(4) none of the above

Subtopic:  Element Analysis |
 91%
AIIMS - 2008
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Cotton fibres mainly contains

(1) cellulose           

(2) glycogen

(3) protein             

(4) lipid

Subtopic:  Carbohydrates: Cellulose, Chitin, Inulin & Agar |
 90%
From NCERT
AIIMS - 2009
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following sugars is not found in plants?

(1) Sucrose

(2) Glucose

(3) Lactose

(4) Fructose

Subtopic:  Carbohydrates: Introduction |
 79%
AIIMS - 2009
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Jute fibres deteriorate quickly because

(1) cellulose content is high

(2) lignin content is high

(3) cellulose content is low

(4) lignin content is low

Subtopic:  Carbohydrates |
AIIMS - 2009
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Vitamin B6 is also called:-
(1) thiamine

(2) pantothenic acid

(3) pyridoxine 

(4) retinol

Subtopic:  Enzyme Cofactors |
 51%
AIIMS - 2010
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

In a 50 gm living tissue, what would be the amount of water?

(1) 15-25 gm

(2) 25-30 gm

(3) 35-45 gm

(4) 70-90 gm

Subtopic:  Introduction |
 63%
From NCERT
AIIMS - 2011
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh