HARD
MHT-CET
IMPORTANT
Earn 100

Match the Column I with Column II and select the correct option from the following.

   Column I    Column II
 a.  Griffith (1928)  i.  One gene-one enzyme
 b.  Avery, McLeod and McCarty (1944)  ii.  Nuclein
 c.  Miescher (1952)  iii.  In T2 phage, DNA is the only genetic material
 d.  Hershey and Chase (1952)  iv.  DNA is the genetic material
 e.

 Beadle and Tatum (1957)

 v.  Transformation

 

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Important Questions on Gene: Its Nature, Expression and Regulation

EASY
MHT-CET
IMPORTANT

Identify the correct match between the codons and coding functions.

   Column I    Column II
 a.  AUG  i.  Phenylalanine
 b.  UAA  ii.  Methionine
 c.  UUU  iii.  Tryptophan
 d.  UCG  iv.  Termination

 

EASY
MHT-CET
IMPORTANT

In Hershey-Chase's experiment, when the radioactive viruses were allowed to infect E.coli, what was observed?

(i) E.coli, which were infected by viruses with radioactive DNA, became radioactive.

(ii) E.coli, which were infected by viruses with radioactive protein, did not become radioactive.

(iii) E.coli, which were infected by viruses with radioactive DNA, did not become radioactive.

(iv) E.coli, which were infected by viruses with radioactive protein, became radioactive.

EASY
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IMPORTANT

What statement about RNA is true?

(i) It is a simple, straight or coiled, single-stranded molecule.

(ii) Components of RNA are ribose sugar, phosphate and N-bases.

(iii) The N-bases of RNA are adenine, guanine, thymine and cytosine.

(iv) Strand of RNA is a long chain of nucleotides joined by phosphodiester bonds.

(v) Base pairing between complementary bases occur on coiling or folding of an RNA molecule.