EASY
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Match the following RNA with their functions.

 1.  mRNA  (A)  Carries activated amino acids for elongation of a polypeptide chain.
 2.  rRNA  (B)  Carries genetic information from the nucleus.
 3.  tRNA  (C)  Associated with the ribosome.

 

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Important Questions on Molecular Basis of Inheritance

EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
In which region of the t-RNA molecule is the amino acid binding site located?
EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Which of the following statements is correct?

a. rRNA is the most abundant RNA.
b. Ribosomes are composed of approximately 80% rRNA and 20% ribosomal proteins.
c. rRNA is a type of coding RNA.
EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World

Identify P and Q in the following figure?

Question Image

HARD
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World

Assertion (A): Between DNA and RNA, DNA is a better genetic material.

Reason (R): 2' -OH group present in every nucleotide in RNA is a reactive group and make RNA labile and easily degradable.

The correct answer is:

MEDIUM
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Give two functions of RNAs.
EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Uracil is present in 
EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Which of the following types of RNA carries amino acids towards ribosome during translation?
EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
DNA fragments are
HARD
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Describe the clover leaf model of tRNA.
MEDIUM
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
The proportion of nucleotides in a given nucleic acid are adenine: 18%, guanine: 30%, cytosine: 42% and uracil: 10%. Name the nucleic acid and mention the number of strands in it.
MEDIUM
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Identify the correct statement.
MEDIUM
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Write any two chemical differences between DNA and RNA.
EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Match the following and select the correct answer:
 
  Column I   Column II
(a) Centriole (p) Infoldings in mitochondria
(b) Chlorophyll (q) Thylakoids
(c) Cristae (r) Nucleic acids
(d) Ribozymes (s) Basal body cilia or flagella
EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Which of the following shows coiled RNA strand and capsomeres?
MEDIUM
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
In sea urchin DNA, which is double-stranded, 17% of the bases were shown to be cytosine. What are the percentages of other three bases expected to be present in this DNA?
EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Purines found both in DNA and RNA are
EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Which one of the following bases is not present in DNA ?
MEDIUM
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Draw a labelled diagram of t-RNA, the adapter molecule.
EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Which one of the following processes in E. coli does not directly involve RNA?
EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Which one of the following is not applicable to RNA?