Online MCQ test- BCBIO24

Fluid Mosaic Model of P.M. was proposed by...

• Danielle & Davson

• Singer & Nicolson

• De Duve

• Gorter & Grendel

The membrane protein that extend through both sides of lipid bilayer are...

• Intrinsic Proteins

• Extrinsic proteins

• Peripheral proteins

• All of above

Chemical composition of plasma Membrane is best described as..

• Plasma Membrane is bilayers of phospholipids with associated Protein and carbohydrates.

• Plasma membrane is composed of equal number of phospholipids,proteins and carbohydrates.

• Plasma membrane is bilayers of proteins with associated lipid and carbohydrates.

• Plasma membrane is composed of two layers, one layer of phospholipids and another layer of protein.

Plasma membrane have ...... heads

• Polar heads

• Hydrophilic

• Both of above

• Non-polar

Non-polar groups of plasma membrane organized in the....

• Middle region of two lipid layers

• Inner region of lipid layers

• Outer region of lipid layers

• None of above

The water soluble materials pass through the proteins called:

• Spectrin

• glycocalyx

• glycoprotein

• channel protein

• extrinsic protein

Choose correct statement(s) about structure R

• makes membrane less fluid by restrain phospholipid movement

• lower the temperature required for mombrane to solidify

• is a type of lipid

• can be found higher in plant compared to animals

Identify suitable stimulus to open ion gated channel in the figure.

• Voltage

• Mechanical

• Chemical

• Enzyme

Statements below are true about receptor medited endocytosis EXCEPT .

• It is a specialized type of pinocytosis.

• It is a type of passive transport

• Substance can be acquired even in low quantities in extracellular fluid

• It enables cells to acquire bulk quantities of specific substance.

A major function of glycoproteins and glycolipids in the membane is to

• glue cells together to form tissues

• allow cells to identify each other

• attach membrane to cytoskeleton

• help retain shape