Endoplasmic Reticulum Quiz | Endoplasmic Reticulum Objective Type Questions and Answers

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Questions
21 What are Singer and Nicolson known for?
A One-gene-one-enzyme hypothesis
B Plasma membrane modifications
C Fluid-mosaic model of plasma membrane
D Structure of DNA

Answer: Fluid-mosaic model of plasma membrane
22 Three of the following statements regarding cell organelles are correct while one is wrong. Which one is wrong?
A Lysosomes are double membraned vesicles budded off from Golgi apparatus and contain digestive enzymes
B Endoplasmic reticulum consists of a network of membranous tubules and helps in transport, synthesis and secretion
C Leucoplasts are bound by two membranes, lack pigment but contain their own DNA and protein synthesizing machinery
D Sphaerosomes are single membrane bound and are associated with synthesis and storage of lipids

Answer: Lysosomes are double membraned vesicles budded off from Golgi apparatus and contain digestive enzymes
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23 Which of the following organelles has a continuous connection with nuclear membrane
A Golgi apparatus
B Lysosome
C RER
D SER

Answer: RER
24 SER is involved in
A Phospholipid biosynthesis and detoxification reaction
B Phospholipid biosynthesis and protein synthesis
C Protein synthesis
D Phospholipid biosynthesis

Answer: Phospholipid biosynthesis and detoxification reaction
25 SER in the retinal cells are called as
A Sarcoplasmic reticulum
B Retinal reticulam
C Myeloid bodies
D All of these

Answer: Myeloid bodies
26 The transport of secretory proteins takes place trough organelles in the order
A RER->SER->golgi-> secretory vescicles
B SER->RER->golgi-> secretory vescicles
C RER->SER-> secretory vescicles -> golgi
D RER->golgi->SER-> secretory vescicles

Answer: RER->SER->golgi-> secretory vescicles
27 RER is involved in the synthesis of
A Membrane proteins and secretory proteins
B Different proteins of the cell
C Membrane proteins, secretory proteins and lysosomal proteins
D Membrane proteins and secretory proteins and nuclear proteins

Answer: Membrane proteins and secretory proteins
28 Extranuclear genes occurs in
A plastids and are not inherited
B plasmid and are not inherited
C mitochondria and are inherited by female
D All of these

Answer: mitochondria and are inherited by female
29 Some Gram -ve bacteria have peptidoglycan and an extra layer of
A lipo-polysaccharide
B teichoic acid
C cellulose
D both (b) and (c)

Answer: lipo-polysaccharide
30 Plasmodesmata connections help in
A cytoplasmic streaming
B synchronous mitotic divisions
C locomotion of unicellular organism
D movement of substances between cells

Answer: movement of substances between cells
31 Endoplasmic reticulum membrane which is associated with ribosomes is called_______
A ER lumen
B Smooth endoplasmic reticulum
C Rough endoplasmic reticulum
D Endosome

Answer: Rough endoplasmic reticulum
32 Which of the following is not the function of Glycosylation?
A Helps in proper folding of the protein
B Confer stability in proteins
C Synthesis of membrane lipid
D None of the above

Answer: Synthesis of membrane lipid
33 Name the sequence which allows the resident protein to retain in ER lumen?
A KDEL
B KKXX
C KLDE
D KXXK

Answer: KDEL
34 Which of the following coated vesicle transport protein from ER to Golgi?
A Clathrin
B COP II
C COP I
D All of these

Answer: COP II
35 Name the coated vesicle which is used to transfer protein from plasma membrane to endosome?
A Clathrin
B COP I
C COP II
D none of these

Answer: Clathrin
36 The term ‘endoplasmic reticulum’ was coined by
A Reinert
B Porter
C Pomaret
D Johnson

Answer: Porter

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