HARD
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Choose the correct option for the conclusion of the Hershey-Chase experiment.

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Important Questions on Molecular Basis of Inheritance

HARD
Write any two chemical differences between DNA and RNA
EASY
The final proof for DNA as the genetic material came from the experiments of
MEDIUM
‘Central dogma’ was proposed by X and these are the processes Y,Z comes in it respectively. Choose the correct option
MEDIUM
A molecule that can act as a genetic material must fulfill the traits given below, except
MEDIUM

A bacterial strain S was heat killed. Another strain R (living) was taken and mixed with this S strain. This mixture of S+R strains were injected into mice. Which of the following are observed by Griffith?

I. The cells of S strain were dead in dead mice.

II. The bacterial cells without polysaccharide coat are transformed into virulent strain in the injected mice.

II. Griffith could not find living S strain in the body of dead mice.

IV. Griffith could find living S strain in the body of dead mice.

The correct combination is:

EASY

Fill in the blank with the most appropriate option given below.

We should give everyone training in citizenship, but we have______this aspect till now.

MEDIUM

Given below are two statements:

Statement I: RNA mutates at a faster rate.

Statement II: Viruses having RNA genome and shorter life span mutate and evolve faster.

In the light of the above statements, choose the correct answer from the options given below:

EASY
In Griffith's experiments mice died when injected with
MEDIUM
Choose the incorrect statements from the following:
A) A nitrogen base is linked to the sugar through peptide linkage to form a nucleoside.
B) A polynucleotide chain has free phosphate moiety at 5 end of sugar.
C) In RNA, nucleotide residue has an additional --OH group at 2nd the position of the ribose sugar.
D) It is observed that in DNA, the A: T ratio and C: G ratio are not constant all the time.
MEDIUM
Examine the diagram and identify the correction option.

Question Image
EASY
The term 'Nuclein' for the genetic material was used by:
MEDIUM
Choose the wrong statements from the given below
A) Lederberg and Tatum found that the bacterium donates entire genetic material to recipient
B) Ehrenberg established link between bacteria and infectious diseases
C) Pasteur showed about the significant changes of nature brought by bacteria
D) Griffith discovered recipient cells of bacteria acquire previous characters
EASY

A student grew virus in three different media containing P32, S35 and DNAase separately and allow this virus to attack to E. coli. The series of observation made by the students are as follows:

a) P32 labelled phage particles were produced in E. coli.
b) S35 containing phage particles were produced E. coli.
c) Phage particles were observed in E. coli.

d) P32 was not observed in phage particles produced by E. coli.
e) S35 was not observed in phage particles produced by E. coli.

The correct observations are

MEDIUM
Identify the correct order of organization of genetic material from largest to smallest :