Plasma membrane is made up of
Lipid, protein and water
Lipid, protein and manganese
Lipid and carbohydrate
Lipid, protein and carbohydrates
Related Questions
Structural lipids of cell membrane are
Simple lipid
Chromolipids
Steroid
Phospholipids
Choose the correct statements
I. Passive cells are larger in size
II. Larger cells have lower surface volume ratio
III. To remain active, larger cells are either cylindrical in shape or possess several extensions of the cell membrane, like microvilli
IV. Microvilli are found in all those cells, which are active in absorption
V. Microvilli (membrane infoldings) occurs in transfer cells found in plants in the region of absorption or secretion of nutrients
Option containing all correct statements is
I and IV
I, II, III and IV
I, III and II
I, II, III, IV and V
Plasma membrane helps in
Transportation of only water in and out of cell
Protein synthesis
Osmoregulation
Nucleic acid synthesis
Cell membrane controls
Exocytosis
Endocytosis
Both (a) and (b)
Not controls movement of substance
Mesosomes are the infoldings of cells membrane, which
I. helps in cell wall formation, DNA replication and respiration
II. increases the surface area of plasma membrane
III. are present in both prokaryotic and eukaryotic cells
Choose the correct option
II and III
I and II
I and III
I, II and III
The plasma membrane consists mainly of
Phospholipids embedded in a protein bilayer
Proteins embedded in a phospholipid bilayer
Proteins embedded in a polymer of glucose molecules
Proteins embedded in a carbohydrate bilayer
Fluid nature of plasma membrane helps in all, except
Cell growth and division
Formation of intercellular junctions
Endocytosis and exocytosis
Providing mechanical strength
The fluidity of membranes in a plant in cold weather may be maintained by
Increasing the number of phospholipids with unsaturated hydrocarbon tails
Increasing the proportion of integral proteins
Increasing concentration of cholesterol in membrane
Increasing the number of phospholipids with saturated hydrocarbon tail
The cell membrane maintains a distinct phospholipid composition between its inner and outer leaflets. Which of the following transport mechanisms is primarily responsible for establishing and maintaining this asymmetry?
Simple diffusion
Facilitated diffusion
Flippases
Ion channels
The cell membrane is best described as:
Fully permeable
Impermeable
Selectively permeable
Rigid and unchanging
