The Living World Question 236
Question: Assertion : Ribosomes came to our knowledge after the discovery of electron microscope. Reason : Electron microscope has a high magnification and resolving power.
Options:
A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
Show Answer
Answer:
Correct Answer: A
Solution:
With the aid of electron microscope, ribosomes and several other submicroscopic cell organelles were observed.
They are extremely minute in size.
For example, the ribosome is a spheroidal particle of 23 nm.
The resolving power of electron microscope is 2 ?10 Å and a magnification of 100,000?300,000 can be obtained in an electron microscope.
BETA
