PLASMA MEMBRANE

First non-living cells were discovered in cork cells by which scientist?

• Robert Brown

• Anton von leeuwenhoek

• Robert Hooke

• None of the above

The first living cell was observed by :

• Robert Hooke

• Anton von leeuwenhoek

• Robert Brown

• None.

Cytoplasm consists of Cytosol (cytoplasmic matrix) and Organelles.

• True

• False

omnis cellula e cellula is given by :

• Schleiden

• Schwann

• Rudolf Virchow

• All of the above

Cell doctrine is given by :

• Schleiden

• Schwann

• Rudolf Virchow

• Both Schleiden and Schwann

The correct order of evolution is:

• Chemoheterotrophs ;Chemoautotrophs ; Photoautotrophs.

• Chemoautotrophs ; Photoautotrophs ; Chemoheterotrophs

• Photoautotrophs ;Chemoheterotrophs; Chemoautotrophs

• None.

As Prokaryotes develop into Eukaryotes , some of the major changes takes place. These include:

• Development of chromosomes for more DNA.

• Development of Organelles.

• Symbiotic Association for aerobic metabolism and Photosynthesis.

• All of the above.

Plasma membrane is a :

• Semi-permeable membrane

• Selectively permeable membrane.

• Both

• None

Choose the wrong model given to explain the structure of plasma membrane by various scientists .

• Davson and Daniel- Trilama Model.

• Gorter and Grendel- Plasma membrane is made of Lipid Unilayer .

• Robertson Model- Unit membrane model

• Singer and Nicolson- Fluid Mosaic Model.

Choose the wrong statement about Plasma Membrane:

• Plasma membrane has the mosaic arrangement of proteins embedded throughout the lipid bilayer and has fluid movement of lipids and proteins.

• The proteins and lipids are free to move laterally in plasma membrane as well as can move freely from one face of bilayer to another.

• The plasma membrane composition of lipids and proteins is different for different Cell types.

• Carbohydrates are abundantly present on the outer surface of plasma membrane.