Question

Which is correct about cell theory in view of current status of our knowledge about cell structure

A. It needs modification due to discovery of subcellular structures like chloroplasts and mitochondria
B. Modified cell theory means that all living beings are composed of cells capable of reproducing
C. Cell theory does not hold good because all living beings (e.g., viruses) do not have cellular organisation  
D. Cell theory means that all living objects consist of cells whether or not capable of reproducing
Answer :   Cell theory does not hold good because all living beings (e.g., viruses) do not have cellular organisation

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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