Which one of the following vitamins contains a metal atom?

1. Riboflavin

2. Vitamin B12

3. Vitamin A

4. Vitamin B6

Subtopic:  Vitamins, Hormones & Enzymes |
 75%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Adenosine is an example of:

(1) nucleotide

(2) nucleoside

(3) purine base

(4) pyrimidine base

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 79%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

In both DNA and RNA heterocyclic base and phosphate ester linkages are at:
1. \(C^1_5\) and \(C^1_2\) respectively of the sugar molecule.
2. \(C^1_2\) and \(C^1_5\) respectively of the sugar molecule.
3. \(C^1_1\) and \(C^1_5\) respectively of the sugar molecule.
4. \(C^1_5\) and \(C^1_1\) respectively of the sugar molecule.

Subtopic:   DNA, RNA & Metal Ions |
 55%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Which one of the following statements is correct ?

1. All amino acids are optically active

2. All amino acids except glycine are optically active

3. All amino acids except glutamic acid are optically active

4. All amino acids except lysine are optically active

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 86%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

α-D-glucose and β D-glucose have a specific rotation of +112° and +19° respectively. In aqueous solution the rotation becomes +52°. This process is called:

(1) inversion

(2) racemisation

(3) mutarotation

(4) enolisation

Subtopic:  Carbohydrates - Classification & D-L configuration |
 72%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

The incorrect statement among the following is:

1. Insulin maintains the sugar level in the blood of a human body.
2. Ovalbumin is a simple food reserve in egg white.
3. Blood proteins thrombin and fibrinogen are involved in blood clotting.
4. Denaturation makes the proteins more active.
Subtopic:  Denaturation of Proteins & Chemical Properties |
 88%
From NCERT
NEET - 2017
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

The central dogma of molecular genetics states that the genetic information flows from
(1) amino acids  proteins  DNA

(2) DNA  carbohydrates  proteins

(3) DNA  RNA  proteins

(4) DNA  RNA  carbohydrates

 

Subtopic:   DNA, RNA & Metal Ions |
 91%
NEET - 2016
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

The correct corresponding order of names of four aldoses with configuration given below

respectively, is
1. L-erythrose, L-threose, L-erythrose, D-threose

2. D-threose, D-erythrose, L-threose, L-erythrose

3. L-erythrose, L-threose, D-erythrose, D-threose

4. D-erythrose, D-threose, L-erythrose, L-threose

Subtopic:  Carbohydrates - Classification & D-L configuration |
 51%
NEET - 2016
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

In a protein molecule, various amino acids are linked together by

(1) b-glycosidic bond

(2) peptide bond

(3) dative bond

(4) a-glycosidic bond

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 92%
From NCERT
NEET - 2016
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

The correct statement regarding RNA and DNA, respectively is:

1. The sugar component in RNA is ribose and the sugar component in DNA is 2'- deoxyribose.
2. The sugar component in RNA is arabinose and the sugar component in DNA is ribose.
3. The sugar component in RNA is 2'-deoxyribose and the sugar component in DNA is arabinose.
4. The sugar component in RNA is arabinose and the sugar component in DNA is 2'- deoxyribose.
Subtopic:   DNA, RNA & Metal Ions |
 92%
From NCERT
NEET - 2016
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch