Schwann
Schleiden
Robert Hook
Both a and b
✅ The correct answer is option C.
The Cell MCQs
Who opposed the idea the cell is an empty space bounded by the thick wall?
Lorenz Oken
Schwann
Robert Brown
Rudolph Virchow
✅ The correct answer is option C.
Who first observed and thus hypothesized that new cells are formed from the previously existing living cell?
Theodor Schwann and Schleiden
Rudolph Virchow
Louis Pasteur
Both B and C
✅ The correct answer is option B.
Resolution power of a compound microscope is
2.0 x m
2-4 A
24 x m
24 A
✅ The correct answer is option A.
Magnifying power of the electron microscope as compared to the eye is
500 X
250000X
500000X
250X
✅ The correct answer is option B.
In cell fractionation various components of cells including its organelles can be isolated in different layers depending upon:
Their physical properties like size & weight.
Physical properties of the medium like its density.
Their electrical properties like their charges
Both a and b
✅ The correct answer is option D.
Percentage of proteins in the cell membrane is
20-40%
40-50%
60-80%
80-100%
✅ The correct answer is option C.
Which of the statement about cell membrane is not true?
It contains protein molecules embedded in the lipid bilayer
It is a differentially permeable membrane.
It contains charged pores thus ions being charged particles cross cell membrane much easier than neutral particles.
It may get infolded to engulf solid or liquid material.
✅ The correct answer is option C.
Movement of the material across the cell membrane which does not requiring the expenditure of metabolic energy is called
Active transport
Passive transport
Co-transport
Counter-transport
✅ The correct answer is option B.
The first layer of the cell wall which is formed is:
Primary Wall
Secondary wall
Middle lamella
All of these
✅ The correct answer is option A.