CBSE
Multiple Choice QuestionsSelect the correct combination of statements for DNA fingerprinting,
I. It is ELISA based technique.
II. It is PCR based technique.
III. It is used by forensic scientists.
IV. It is based on the fingerprint of the individual.
V. It is a test for paternity
I, II and III
II, III and IV
I, IV and V
I, III and IV
Read the following statements.
I. Satellite DNA is found in the region of euchromatin
II. Prokaryotes contain only non-repetitive DNA
Identify wheather the given statements are true or false
Both the statements are true
I is true and II is false
I is false and II is true
Both the statements are false
The enzyme peptidyl transferase of prokaryotes resides in
50 S ribosome
30 S ribosome
40 S ribosome
60 S ribosome
Given below are the set of statements describing the structural details of Purines (A) and Pyrimidines (BJ.
I. Nine - membered, double ring
II. Six - membered, single ring
III. Contains Nitrogen atoms at four positions
IV. Contains Nitrogen atoms at two positions
Segregate the statements I - IV into categories A and B and choose the correct option.
| A | B |
| I, IV | II, III |
| Only I | Only IV |
| Only II | Only I |
| I, III | II, IV |
Which of the following are not the functions of genes?
I. Cell division
II. Structure and metabolism control
III. Carrier of hereditary information
IV. Provide proof for crossing over
I, II, III and IV
I, III and IV
I, II and III
II, III and IV
The tRNA anticodon 3'-UAC-5' will pair with the mRNA codon
5'-AUU-3'
5'-UAC-3'
5'-AUG-3'
3'-GUA-5'
The translation unit is represented by the following diagram. Select the correct answer based on this
Promoter/ Terminater/ Coding strand/ Structural gene
Promoter/ Coding strand/ Terminator/ Structural gene
Terminater/ Coding strand/ Structural gene/ Promoter
Promoter/ Structural gene/ Coding strand/ Terminator
Lactose (Lac) operon is regulated by
lac repressor only
lac repressor and CAP-cGMP complex
lac repressor and CAP-cAMP complex
CAP-cAMP and CAP-cGMP complex
Select the option for correct pairing of nitrogenous bases in dsDNA.
(Py)Adenine = (Pu)Cytosine :: (Pu)Guanine = (Pu)Thiamine
(Pu)Adenine Thiamine(Py) :: (Py)Cytosine = (Py)Guanine
(Py)Adenine (Pu)Thiamine :: (Py)Cytosine (Pu)Guanine
Adenine(Pu) = Thiamine(Py) :: Guanine(Pu) Cytosine(Py)
Which type of RNA carries no coding message?
mRNA
tRNA
rRNA
tRNA and rRNA
