Tag: cell structure

Questions Related to cell structure

Which of the following is found in plant cells, but not in animal cells?

bio-chemistry cell structure animal cells vs plant cells comparing plant and animal cells comparison between animal and plant cell

  1. Cell wall

  2. Nucleus

  3. Endoplasmic reticulum

  4. Mitochondria

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Correct Option: A
Explanation:
  • The cell wall is a unique structure present in plant cells. It is found as an outer covering to the plasma membrane. 
  • The cell wall is made up of cellulose, pectin, etc, according to whether it is seen in plants, fungi or bacteria.

An ${A^o}$ is equal to 

bio-chemistry cell structure membrane bound organelles cell: size and differentiation microscopy

  1. $10^{-5}$cm

  2. $10^{-6}$cm

  3. $10^{-7}$cm

  4. $10^{-8}$cm

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Correct Option: D

One micrometre (micron, $\mu$m) is equal to

bio-chemistry cell structure membrane bound organelles cell: size and differentiation microscopy

  1. $0.1$mm

  2. $0.01$mm

  3. $0.001$mm

  4. $0.0001$mm

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Correct Option: C

A nanometre (nm) is equal to 

bio-chemistry cell structure membrane bound organelles cell: size and differentiation microscopy

  1. $10^{-9}$m

  2. $10^{-7}$cm

  3. $10 {A^o}$

  4. All of the above

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Correct Option: D

Which is a proper unit for measurement in microscopy?

bio-chemistry cell structure membrane bound organelles cell: size and differentiation microscopy

  1. Micron

  2. Angstrom

  3. Nanometre

  4. All of the above.

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Correct Option: C

$1$ micron is equal to _____________.

bio-chemistry cell structure membrane bound organelles cell: size and differentiation microscopy

  1. $1/100$mm

  2. $1/1000$mm

  3. $1/10000$mm

  4. $1/1,00,000$mm.

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Correct Option: B
Explanation:

1 Micrometer (µm) is equal to 0.001 millimeter (mm). To convert micrometers to millimeters, multiply the micrometer value by 0.001 or divide by 1000.

Hence, B is the correct option.

The smallest measuring unit of cytology is

bio-chemistry cell structure membrane bound organelles cell: size and differentiation microscopy

  1. Nanometre, nm.

  2. Angstrom, A$^o$.

  3. Micrometre, $\mu$m.

  4. Micron $\mu$.

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Correct Option: A

Angstrom ($A{^o}$) is equal to

bio-chemistry cell structure membrane bound organelles cell: size and differentiation microscopy

  1. $0.01\mu$m.

  2. $0.001\mu$m.

  3. $0.0001\mu$m.

  4. $0.00001\mu$m.

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Correct Option: C

$1$m$\mu$ (millimicron) is equal to

bio-chemistry cell structure membrane bound organelles cell: size and differentiation microscopy

  1. $10^{-5}$mm.

  2. $10^{-6}$mm.

  3. $10^{-7}$mm.

  4. $10^{-8}$mm.

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Correct Option: B

Which of the following statements is false?

bio-chemistry cell structure membrane bound organelles cell: size and differentiation microscopy

  1. Electrophoresis can help separate proteins.

  2. Image formed by compound microscope is vertical and erect.

  3. An angstrom is one-hundredth of a micron.

  4. Unstained living cells can be studied with the help of a phase-contrast microscope.

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Correct Option: C