CELL PYQs

The concept of "Omni cellula-e-cellula" regarding cell division was first proposed by

• Rudolf Virchow

• Theodor Schwann

• Schleiden

• Aristotle

Plamodesmata are

• connections between adjacent cells

• lignified cemented layer between cells

• locomotary structures

• membranes connecting nucleus with plasmalemma

Which of the following statement regarding mitochondria is incorrect?

• Outer membrane is permeable to monomers of carbohydrates, fats and proteins.

• Enzymes of Electron transport chain are embedded in outer membrane.

• Inner membrane is convoluted with infolding

• Mitochondrial matrix contains single circular DNA molecule and ribosomes

Which of the following events does not occur in rough endoplasmic reticulum (RER)

• cleavage of signal peptide

• protein glycosylation

• protein folding

• phospholipid synthesis

• both a and b are correct

• b is true but a is false

• a is true but b is false

• both a and b are false

water solube pigments found in plant cell vacuoles are

• xanthophylls

• chlorophylls

• carotenoids

• anthocyanins

which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP

• Ribosomes

• chloroplast

• mitochondria

• lysosomes

• 4

• 3

• 2

• 1

The golgi complex participates in

• respiration in bacteria

• formation of secretory vesicles

• fatty acid breakdown

• activation of amino acid

which of the following with respect to endoplasmic reticulum is incorrect?

• rer has ribosomes attached to ER

• SER is devoid of ribosomes

• In prokaryotes only RER are present

• SER is the site of lipid synthesis