Action protein
Actin and myosin proteins
Sphingomyelin and tubulin
Tubulin protein and traces of RNA
✅ The correct answer is option D.
Biology MCQs
Higher turgor pressure in a plant cell is maintained by:
A large number of vacuoles in a plant cell.
Higher ionic concentration inside vacuoles resulting from active pumping of ions at their tonoplastic membrane
A higher osmotic pressure of the cell vacuole
both B and C
✅ The correct answer is option D.
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.
From each pair of centrioles ________ sets of microtubules originate
2
3
4
5
✅ The correct answer is option B.
The secondary cell wall of sclerenchyma cells is impregnated with
Cellulose.
Peptidoglycan and murein.
Lignin.
Pectin.
✅ 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.
Mitotic apparatus in animals is formed by
Aster and spindle
Polar and kinetochore microtubules
Spindle and RNA
Spindle only
✅ The correct answer is option A.
Among the followings which are the longest supportive cell?
Tracheids.
Sclereids.
Trachea.
Collenchyma cells
✅ The correct answer is option A.
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.
Study of a single population’s relationship to its environment is called
Ecology
Gynaecology
Autecology
Niche
✅ The correct answer is option C.