ICAR-AIEEA-UG Practice Quiz

Question 1

In the Hershey-Chase experiment, which observation most strongly supported that DNA, and not protein, is the genetic material of bacteriophage T2?

Accepted Answer

32P-labelled DNA entered the bacterial cell and was detected in progeny phages

Question 2

According to Chargaff's rules for double-stranded DNA, if a sample contains 22% cytosine, what percentage of adenine will it contain?

Accepted Answer

28%

Question 3

In Meselson and Stahl's experiment, E. coli grown first in 15N and then shifted to 14N showed an intermediate-density band after one generation. This result ruled out which model most directly?

Accepted Answer

Conservative replication

Question 4

A DNA segment has the sequence 5'-ATGCCGTA-3' on one strand. What will be the sequence of the complementary strand written in the 3'→5' direction?

Accepted Answer

3'-TACGGCAT-5'

Question 5

During semiconservative replication, each daughter DNA molecule contains:

Accepted Answer

One parental strand and one newly synthesized strand

ICAR-AIEEA-UG Syllabus

Students preparing for ICAR-AIEEA-UG