CBSE Class 11 Biology Cell The Unit of Life MCQs Set D

Question. ……..can not pass through the lipid bilayer, they require a carrier protein of the membrane to facilitate their transport across the membrane
(a) Nonpolar molecules
(b) Polar molecules
(c) Hydrophobic molecules
(d) Both (b) and (c)

Answer: B

Question. An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of cell shape is called :-
(a) Endoplasmic reticulum
(b) Plasmalemma
(c) Ribosomes
(d) Cytoskeleton

Answer: D

Question. One of the most important functions of the plasma membrane is :-
(a) Formation of nuclear membrane
(b) Transport of molecules across it
(c) Exocytosis
(d) Detoxification

Answer: B

Question. Match the following –
(A) Robert Brown        (I) Ribonucleoproteins
(B) Flemming             (II) Nucleus as cell organelle
(C) Palade                 (III) Packaging of materials
(D) Camillo Golgi      (IV) Staining of nucleus material
(a) A – (II) B – (IV) C – (I) D – (III)
(b) A – (II) B – (IV) C – (III) D – (I)
(c) A – (I) B – (II) C – (III) D – (IV)
(d) A – (IV) B – (III) C – (II) D – (I)

Answer: A

Question. A Golgi complex has :-
(a) Fixed number of cisternae
(b) Varied number of cisternae
(c) One cisterna in higher plants
(d) Convex trans face and concave cis face cisternae

Answer: B

Question. Classification of chromosomes with respect to shape based on –
(a) Structure
(b) Number of telomere
(c) Position of centromere
(d) Position of kinetochore

Answer: C

Question. Chromosome with centromere slightly away from center is known as –
(a) Metacentric
(b) Submetacentric
(c) Acrocentric
(d) Telocentric

Answer: B

Question. Which of the following is not a function of cell wall ?
(a) Protection from mechanical damage and infection
(b) Cell to cell interaction
(c) Barrier to undesirable macromolecules
(d) Secretion

Answer: D

Question. Which of the following constituent is right for endomembrane system ?
(a) ER, Golgi complex, lysosome & nucleus
(b) ER, Golgi complex, lysosome & vacuole
(c) ER, Golgi complex, lysosome & microbodies
(d) ER, Golgi complex, plastids & vacuole

Answer: B

Question. Classification of plastids into chloroplast, chromoplast and leucoplast is based on –
(a) Stored food
(b) Pigments
(c) Structure
(d) Size

Answer: B

Question. Fluidity of plasma membrane is due to –
(a) Lipids
(b) Proteins
(c) Carbohydrates
(d) Cholesterol

Answer: A

Question. The physio-chemical approach to study and understand living organisms is called –
(a) Physiochemical biology
(b) Reductionist biology
(c) Fundamental biology
(d) Biochemical biology

Answer: B

Question. Regarding to inclusion bodies – find out the incorrect statement
(a) It is site of food storage
(b) It is single membrane bounded
(c) They lie freely in cytoplasm
(d) May found in prokaryotic and eukaryotic cells

Answer: B

Question. Radial spokes of flagella helps in connection between-
(a) Peripheral doublets
(b) Central singlet microtubules
(c) One of the peripheral doublet and central sheath
(d) Two successive peripheral doublets

Answer: C

Question. Plasma membrane covering of flagella and cilia surrounds the central core, that is known as –
(a) Shaft
(b) Axonema
(c) Radial spoke
(d) Arms

Answer: B

Question. Nucleus as a “cell organelle” was first described by…..as early as……..
(a) Robert Hooke, 1665
(b) Robert Brown, 1831
(c) Flemming, 1931
(d) Strasburger, 1831

Answer: B

Question. Which of the following component is not a constituent of algal cell wall ?
(a) Cellulose
(b) Galactans
(c) Mannans
(d) Hemicellulose

Answer: D

Question. ………….was a German scientist, who observed that all plant tissues are made up of cells. At the same time……….., British scientist studied different type of animal cells.
(a) Rudolf Virchow and Nageli respectively
(b) Mathias Schleiden and Theodore Schwann respectively
(c) Theodore Schwann and Mathias Schleiden respectively
(d) Robert Hooke and Schleiden respectively

Answer: B

Question. In plant cells how much volume of cell can be occupied by vacuole ?
(a) 10%
(b) 50%
(c) 90%
(d) 80%

Answer: C

Question. Which of the following reasons explains best, the close association of Golgi complex with ER ?
(a) Its enzymes works close to ER
(b) It receives material from ER for packaging
(c) It becomes active close to ER
(d) All of the options

Answer: B

Question. Regarding to cell membrane find out the odd one –
(a) Fluid mosaic model is widely accepted model
(b) Quasi fluid nature of lipids enables the lateralmovement of proteins
(c) All types of molecules can easily pass throughmembrane
(d) Fluid nature of membrane is also important for cell growth & formation of intercellular junctions

Answer: C