Which enzyme polymerizes RNA with defined sequences in a template independent manner?

(1) Peptidyl transferase

(2) RNA polymerase

(3) Reverse transcriptase

(4) Polynucleotide phosphorylase

Subtopic:  Genetic Code: I | Genetic Code |
From NCERT
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

Match each item in Column I with one item in Column II and chose your answer from the codes given below:

Column I

(nRNA codons)

Column II

(Amino Acid)

I. GUG

II. UGG

III. UAC

IV. GAG

1. Tryptophan

2. Valine

3. Glutamic acid

4. Tyrosine

 

Codes

             I           II         III         IV

(1)         1           2           3           4

(2)         2           1           4           3

(3)         2           1           3           4

(4)         1           2           4           3

Subtopic:  Genetic Code: I | Genetic Code |
 75%
From NCERT
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

Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a triplet?

(1) Nirenberg and Mathaei

(2) Hershey and chase

(3) Morgan and Sturtevant

(4) Beadle and Tatum

Subtopic:  Genetic Code: I | Genetic Code |
 53%
NEET - 2009
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Which one of the following codons codes for the same information as UGC?

(1) UGU

(2) UGA

(3) UAG

(4) UGG

Subtopic:  Genetic Code: I | Genetic Code |
From NCERT
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 one of the following pairs is correctly matched with regard to the codon and the amino acid coded by it?

(1) UUA - valine

(2) AAA - lysine

(3) AUG - cysteine

(4) CCC - alanine

Subtopic:  Genetic Code: I | Genetic Code |
 57%
From NCERT
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 is correct regarding genetic code?

(1) UUU is the initiation codon which also codes for phenylalanine.

(2) There are 64 triplet codons and only 20 amino acids.

(3) Three random nitrogen bases specify the placement of one amino acid.

(4) UAA is the nonsense codon which also codes for methionine.

Subtopic:  Genetic Code: I | Genetic Code |
 79%
From NCERT
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

Match the triplet codons listed in column I with their amino acids mentioned in column II and select the correct option from the given codes.

  Column I

   Column II

A. GGG

(i) Proline

B. UUU

(ii) Glycine

C. CCC

(iii) Arginine

D. AAA

(iv) Phenylalanine

 

(v) Lysine

(1) A-(v), B-(iii), C-(i), D-(ii)

(2) A-(v), B-(iii), C-(i), D-(iv)

(3) A-(ii), B-(iv), C-(i), D-(v)

(4) A-(i), B-(ii), C-(iii), D-(iv)

Subtopic:  Genetic Code: I | Genetic Code |
 86%
From NCERT
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

Suppose, evolution on earth had occurred in such a way that there are 96 amino acids instead of 20. DNA has 12 different types of bases and DNA synthesis occurs in the same way as today. The minimum number of bases per DNA codon would be

(1) 12

(2) 8

(3) 2

(4) 3

Subtopic:  The DNA | Genetic Code: I | Genetic Code |
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

If a codon consists of 3 bases and there are 5 different nitrogenous bases altogether. How many codons will be there?

(1)61

(2)125

(3)27

(4)64

Subtopic:  Genetic Code: I | Genetic Code |
 68%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

A codon consists of three nitrogenous bases and there are four kind of bases in nucleic acid altogether. How many codons will be there?

(1)60

(2)43

(3)34

(4)46

Subtopic:  Genetic Code: I | Genetic Code |
 90%
From NCERT
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