Biology Botany Online MCQ Test AIIMS,NEET UG,JIPMER,Medical exam

NEET UG Botany MCQ-78

Question No:1

Cell structures that are exclusively found in animal cells but not in plant cells are

(A) Plastids
(B) Cell wall
(C) Centrioles
(D) Gas vacuoles

Question No:2

The detailed structure of cell membrane was studied only after the invention of

(A) Simple microscope
(B) Compound microscope
(C) Electron microscope
(D) Phase contrast microscope

Question No:3

Experimental material used for the study the chemical structure of cell membrane was

(A) White blood cells
(B) Red blood cells
(C) Platelets
(D) Lymph cells

Question No:4

The lipid component of cell membrane mainly consists of

(A) Glycerides
(B) Phosphoglycerides
(C) Oligosaccharides
(D) Proteins

Question No:5

Cell membrane is chemically composed by

(A) Lipids
(B) Carbohydrates
(C) Proteins
(D) All the above

Question No:6

The approximate percentage of proteins and lipids in the cell membrane of human erythrocyte respectively is

(A) 40 and 52
(B) 42 and 50
(C) 52 and 40
(D) 48 and 52

Question No:7

Most widely accepted model for plasma membrane is

(A) Sandwitch model
(B) Fluid mosaic model
(C) Unit membrane model
(D) Trilamellar model

Question No:8

The fluid nature of cell membrane is given by

(A) Proteins
(B) Carbohydrates
(C) Lipids
(D) All the above

Question No:9

Fluid-mosaic model was proposed by

(A) Robertson
(B) Peter mitchell
(C) Dam’elli and Daveson
(D) Singer and Nicolson

Question No:10

The fluid nature of plasma membrane helps in

(A) Cell division
(B) Cell growth
(C) Endocytosis
(D) All

Question No:11

The selectively permeable nature of cell membrane is mainly contributed by

(A) Lipids
(B) Proteins
(C) Lipo-proteins
(D) Carbohydrates

Question No:12

Movement of molecules across the cell membrane without the requirement of energy is called

(A) Active transport
(B) Passive transport
(C) Osmosis
(D) Plasmolysis

Question No:13

Movement of water through the plasma membrane by diffusion is called

(A) Plasmolysis
(B) Exosmosis
(C) Endosmosis
(D) Osmosis

Question No:14

Physical phenomenon that occur in Osmosis is

(A) Diffusion
(B) Evaporation
(C) Percolation
(D) Plasmolysis

Question No:15

Driving force for active transport of ions across the cell membrane is

(A) AMP
(B) ATP
(C) GTP
(D) ADP

Question No:16

Carrier proteins which are present in the cell membrane facilitate the transport of

(A) Non – polar molecules
(B) Hydrophobic molecules
(C) Polar – molecules
(D) Water

Question No:17

Non – living, rigid, protective covering for the plasma membrane of fungi and plant cell is

(A) Glycocalyx
(B) Capsule
(C) Cell wall
(D) All

Question No:18

Cell wall materials found in Algal cell wall are

(A) Cellulose
(B) Galactans
(C) Mananns
(D) All the above

Question No:19

Common cell wall materials found in plant cells are

(A) Cellulose
(B) Hemicellulose
(C) Pectin
(D) All the above

Question No:20

Neighbouring cells are adjoined by

(A) Middle lamellum
(B) Primary cell wall
(C) Secondary cell wall
(D) Plasma membrane