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From the following, identify the statements that are correct regarding tRNA.

I. Hydrogen bonds between bases temporarily hold tRNA against mRNA.
II. The base sequences in the tRNA molecules are the same as the base sequences in the mRNA that is being translated.
III. The specificity of the tRNA molecule for glycine and the specificity of the enzyme that loads glycine are both necessary for correct loading.

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Important Questions on Molecular Basis of Inheritance

EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Which one of the following is not applicable to RNA?
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.
EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World

Observe the figure and answer the questions:

Question Image

Identify the parts A and B.

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Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Microtubules are the constituents of:
EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World

Identify P and Q in the following figure?

Question Image

MEDIUM
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Fertilization in humans is practically feasible only if:
EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World

Observe the figure and answer the questions:

Question Image

What is the function of 'A'?

EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Chromatophores take part in:
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?
MEDIUM
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Give two functions of RNAs.
MEDIUM
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World

Mitochondria and chloroplast are:

(i) Semi - autonomous organelles

(ii) Formed by the division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery

Which one of the following option is correct?

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
Root pressure is usually acidic because:
MEDIUM
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Draw a labelled diagram of t-RNA, the adapter molecule.
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Identify the correct order of organization of genetic material from largest to smallest :
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Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
Match the columns and identify the correct option.
 
  Column I   Column II
A Thylakoids (i) Disc-shaped sacs in Golgi apparatus
B Cristae (ii) Condensed structure of DNA
C Cisternae (iii) Flat membranous sacs in stroma
D Chromatin (iv) Infoldings in mitochondria
EASY
Biology>Genetics and Evolution>Molecular Basis of Inheritance>RNA World
If you suspect major deficiency of antibodies in a person, to which of the following would you like for confirmation evidence?
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
Write any two chemical differences between DNA and RNA.
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.