Endomembrane System

Question 1

which organelles are included in the endomembrane system

Answer 1

endoplasmic reticulum
golgi complex
lysosomes
vacuoles

Question 2

ER divides the intracellular space in which two compartments

Answer 2

luminal
extra luminal

Question 3

what is luminal compartment of ER

Answer 3

internal space enclosed by ER membrane

Question 4

what is extra luminal compartment of ER

Answer 4

space present outside the ER membrane

Question 5

types of ER

Answer 5

RER
SER

Question 6

functions of SER

Answer 6

specialised in synthesis of lipids and steroids

Question 7

functions of RER

Answer 7

protein synthesis and secretion

Question 8

by who and when was golgi complex first observed

Answer 8

Camillo Golgi in 1898

Question 9

in which pattern are cisternae of golgi complex arranged

Answer 9

concentric

Question 10

size range of cisternae in golgi complex

Answer 10

0.5 micrometer to 1 micrometer in diameter

Question 11

two faces of cisternae of golgi complex

Answer 11

cis and trans

Question 12

cis is which face of golgi complex

Answer 12

convex or the forming face

Question 13

trans is which face of golgi complex

Answer 13

concave or maturing face

Question 14

functions of golgi apparatus

Answer 14

process, package and transport materials for secretions
modification of proteins from ER
important site of formation of glycoproteins and glycolipids

Question 15

lysosomes are rich in which enzymes

Answer 15

hydrolytic enzymes

Question 16

hydrolytic enzymes are also called

Answer 16

hydrolases

Question 17

examples of hydrolases

Answer 17

lipases
proteases
carbohydrases

Question 18

hydrolases are capable of digesting

Answer 18

carbohydrates
proteins
lipids
nucleic acids

Question 19

lysosomes are opimally active at _____ pH

Answer 19

acidic

Question 20

what do vacuoles contain

Answer 20

water
sap
excretory products
materials not useful for cell

Question 21

in plant cells, vacuoles occupy upto ______ of volume of cell

Answer 21

90%

Question 22

vacuoles are bounded by a single, semipermeable membrane called

Answer 22

tonoplast

Question 23

what does tonoplast do

Answer 23

transport of a number of ions and other materials against concentration gradients into the vacuole

Question 24

types of vacuoles

Answer 24

contractile vacuoles
food vacuoles

Question 25

which vacuoles is present in amoeba

Answer 25

contractile

Question 26

what does contractile vauole do in amoeba

Answer 26

helps in excretion and osmoregulation

Question 27

food vacuoles are formed by

Answer 27

engulfing food particles