Tag: cell: size and differentiation

Questions Related to cell: size and differentiation

Which is a proper unit for measurement in microscopy?

  1. Micron

  2. Angstrom

  3. Nanometre

  4. All of the above.


Correct Option: C

$1$ micron is equal to _____________.

  1. $1/100$mm

  2. $1/1000$mm

  3. $1/10000$mm

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


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

  1. Nanometre, nm.

  2. Angstrom, A$^o$.

  3. Micrometre, $\mu$m.

  4. Micron $\mu$.


Correct Option: A

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

  1. $0.01\mu$m.

  2. $0.001\mu$m.

  3. $0.0001\mu$m.

  4. $0.00001\mu$m.


Correct Option: C

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

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

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

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

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


Correct Option: B

Which of the following statements is false?

  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.


Correct Option: C

Angstrom is equal to

  1. $10^{-10}$m.

  2. $10^{-12}$m.

  3. $10^{-6}$m.

  4. $10^{-3}$m.


Correct Option: A

What is the unit for measuring the size of a cell?

  1. nm

  2. mm

  3. $\overset{o}{A}$

  4. $\mu$m


Correct Option: D

A nanogram is equivalent to

  1. $10^{-9}$g.

  2. $10^{-9}$mg.

  3. $10^9$mg.

  4. $10^9$g.


Correct Option: A

Which one combination of eye piece and objective would have widest field

  1. 5 X, 5 X

  2. 5 X, 10 X

  3. 10 X, 45 X

  4. 10 X, 100 X


Correct Option: A
Explanation:

The objective with a low number will have the widest field.

So, the correct option is '5 X, 5 X'.