Question

In polypeptide chain of 125 amino acids, if the 25th amino acid is mutated to UAA then

A. A polypeptide of 124 amino acid is formed
B. A polypeptide of 25 amino acid is formed
C. A polypeptide of 24 amino acid is formed  
D. Any of the above can be possible
Answer :   A polypeptide of 24 amino acid is formed

Releted MCQ Question on
Botany >> Cell: The Unit of Life

Releted Question 1

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

A. Genome, chromosome, nucleotide, gene
B. Genome, chromosome, gene, nucleotide
C. Chromosome, genome, nucleotide, gene
D. Chromosome, gene, genome, nucleotide
Releted Question 2

A protoplast is a cell :

A. without nucleus
B. undergoing division
C. without cell wall
D. without plasma membrane
Releted Question 3

A major break through in the studies of cells came with the development of electron microscope. This is because

A. the resolving power of the electron microscope is 200-350 nm as compared to 0.1-0.2 for the light microscope
B. electron beam can pass through thick materials, whereas light microscopy requires thin sections
C. the electron microscope is more powerful than the light microscope as it uses a beam of electrons which has wavelength much longer than that of photons
D. the resolution power of the electron microscope in much higher than that of the light microscope
Releted Question 4

A student wishes to study the cell structure under a light microscope having 10X eyepice and 45X objective. He should illuminate the object by which one of the following colours of light so as to get the best possible resolution?

A. Blue
B. Green
C. Yellow
D. Red

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Cell: The Unit of Life


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