(D) The electron microscope allowed for the visualization of much smaller cellular structures that were previously invisible under light microscopes.

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(D) The electron microscope allowed for the visualization of much smaller cellular structures that were previously invisible under light microscopes. Both the endoplasmic reticulum and ribosomes were discovered and characterized only after the introduction of the electron microscope.

Class 11 Biology Cell: The Unit of Life Mix Example-Cell: The Unit of Life

Easy

Which of the following cell organelles were discovered after the introduction of electron microscope?

A
Mitochondria
B
Endoplasmic reticulum
C
Ribosomes
D
Both $(b)$ and $(c)$

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Biology Questions

Chapter

Cell: The Unit of Life

Subtopic

Mix Example-Cell: The Unit of Life

Ephagy refers to

Medium

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$DNA$ is present in

Medium

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Which of the following is $NOT$ common to both chloroplasts and mitochondria?

Easy

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How many genome types are present in a typical green plant cell?

MediumAIPMT 1998

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Match Column-$I$ with Column-$II$ and select the correct option.

Column-$I$ Column-$II$

$(a)$ Thylakoids $(i)$ Disc-shaped sacs in Golgi apparatus

$(b)$ Cristae $(ii)$ Condensed structure of $DNA$

$(c)$ Cisternae $(iii)$ Flat membranous sacs in stroma

$(d)$ Chromatin $(iv)$ Infoldings in mitochondria

Column-$I$	Column-$II$
$(a)$ Thylakoids	$(i)$ Disc-shaped sacs in Golgi apparatus
$(b)$ Cristae	$(ii)$ Condensed structure of $DNA$
$(c)$ Cisternae	$(iii)$ Flat membranous sacs in stroma
$(d)$ Chromatin	$(iv)$ Infoldings in mitochondria