TN State Board Samacheer Kalvi Online Test for 11th Std - Biology - English - Molecular Genetics

Question 1 Of 10

The sequence of bases in coding strand of DNA is GAGTTAGCAGGC, then the sequence of codons in primary transcript is ……………

CUCAUACGCCCG CUCAAUCGUCCG UCAGAUCUGCGC UUCAAUCGUGCG

Question 2 Of 10

Replication of DNA occurs at phase of cell cycle.

M S G1 G2

Question 3 Of 10

The distance between two consecutive base pairs in DNA is …………………

0.34 nm 3.4 nm 0.034 nm 34 nm

Question 4 Of 10

Identify the proper sequence in the organisation of the eukaryotic chromosome.

Nucleosome – Solenoid – Chromatid Chromatid – Nucleosome – Solenoid Solenoid – chromatin – DNA Nucleosome – solenoid – genophore

Question 5 Of 10

The cluster of genes with related function is called …………….

Cistron Operon Muton Recon

Question 6 Of 10

Assertion (A): the semi-conservative model was proposed by Hershey and Chase. Reason (R) : The daughter DNA contains only new strands.

Both A and R are incorrect A is correct R is incorrect R explains A A is incorrect R is correct

Question 7 Of 10

Identify the incorrect statement

Replication occurs at ori – site of DNA Deoxy nucleotide triphosphate acts as a substrate Unwinding of DNA strand is carried out by topoisomerase DNA polymerase catalyses the polymerization at 3-OH

Question 8 Of 10

A nucleoside is composed of………………………………

Sugar and Phosphate Nitrogen base and Phosphate Sugar and Nitrogen base Sugar, Phosphate and Nitrogenous base

Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 11th Standard Biology - English Medium - Molecular Genetics

Samacheer Kalvi 11th Biology - Molecular Genetics - Book Back Questions in English Medium