MCQ Questions for Class 11 Biology Chapter 8 Cell: The Unit of Life with Answers

Cell: The Unit of Life Class 11 Biology MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 11 Biology Chapter 8 Cell: The Unit of Life with Answers Pdf free download. MCQ Questions for Class 11 Biology with Answers were prepared based on the latest exam pattern. We have Provided Cell: The Unit of Life Class 11 Biology MCQs Questions with Answers to help students understand the concept very well.

Class 11 Biology Chapter 8 Quiz

Class 11 Biology Chapter 8 MCQ Online Test

You can refer to NCERT Solutions for Class 11 Biology Chapter 8 Cell: The Unit of Life to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Cell: The Unit of Life Class 11 Biology MCQ online test

Q1.	The cytoplasmic connections from cell to cell are known as
	A.middle lamella
	B.plasmodesmata
	C.cell membrane system
	D.endoplasmic reticulum

Ans: plasmodesmata

Q2.	Bacterial flagella is made up of
	A.tubulin
	B.flagellin
	C.chitin
	D.None of these

Ans: flagellin
Explanation:
Bacterial flagella is made up of protein flagellin.

Q3.	Plasmolysis occurs due to-
	A.Absorption
	B.Endosmosis
	C.Osmosis
	D.Exosmosis

Ans: Exosmosis

Q4.	The term Cell was given by-
	A.Leeuwenhoek
	B.Robert hooke
	C.Flemming
	D.Robert Brown

Ans: Robert hooke

Q5.	Which one of the following also acts as a catalyst in a bacterial cell?
	A.23 sr RNA
	B.5 sr RNA
	C.sn RNA
	D.hn RNA

Ans: 23 sr RNA

Q6.	Centrosome is found in-
	A.Cytoplasm
	B.Nucleus
	C.Chromosomes
	D.Nucleolus

Ans: Cytoplasm

Q7.	Plasma membrane is
	A.impermeable
	B.semi-permeable
	C.completely permeable
	D.differentially permeable

Ans: semi-permeable
Explanation:
Plasma membrane is a selective permeable membrane that allows only selective molecules to pass through it.
The permeability depends on the electric charge and polarity of the molecules.

Q8.	Middle lamella is made up of ___________.
	A.calcium sulphide
	B.calcium pectate
	C.calcium carbonate
	D.calcium chloride

Ans: calcium pectate
Explanation:
Middle lamella is made up of calcium pectate.

Q9.	Match the columns. 1. Cytoskeleton – A. hair-like outgrowth 2. Flagella – B. proximal region of centriole 3. Hub – C. bristle-like structures 4. Fimbriae – D. filamentous protein structure
	A.1-D, 2-A, 3-B, 4-C
	B.1-D, 2-C, 3-B, 4-A
	C.1-B, 2-D, 3-A, 4-C
	D.1-D, 2-A, 3-C, 4-B

Ans: 1-D, 2-A, 3-B, 4-C
Explanation:
A filamentous protein structure present in the cytoplasm is called cytoskeleton.
Flagella is a hair-like outgrowths of the cell membrane.
The central part of the proximal region of the centriole is called hub.
Fimbriae are small bristle like fibres sprouting out of the cell.

Q10.	Which of the following does not have cell wall?
	A.Mycoplasma
	B.Bacteria
	C.PPLO
	D.Blue green algae

Ans: Mycoplasma
Explanation:
Mycoplasma does not have cell wall.
PPLO (Pleuro Pneumonia Like Organisms)

Q11.	Centrosome is found in-
	A.Cytoplasm
	B.Nucleus
	C.Chromosomes
	D.Nucleolus

Ans: Cytoplasm

Q12.	The longest cell in human body is
	A.red blood cells
	B.white blood cells
	C.columnar epithelial cells
	D.nerve cells

Ans: nerve cells
Explanation:
Nerve cells are the longest cells.

Q13.	The main site for synthesis of lipids is
	A.vacuoles
	B.RER
	C.SER
	D.Golgi body

Ans: SER
Explanation:
The main site for synthesis of lipid is smooth endoplasmic reticulum.

Q14.	The function of ribosomes is
	A.metabolism
	B.lipid synthesis
	C.protein synthesis
	D.photosynthesis

Ans: protein synthesis
Explanation:
Ribosomes are called protein factories because they synthesize proteins.

Q15.	Which is called Suicidal Bag?
	A.Centrosome
	B.Lysosome
	C.Mesosome
	D.Chromosome

Ans: Lysosome

Q16.	A nucleosome is a portion of the chromonema containing ______.
	A.both DNA and histones
	B.only histones
	C.both DNA and RNA
	D.only DNA

Ans: both DNA and histones

Q17.	The largest cell in the human body is-
	A.Nerve cell
	B.Muscle cell
	C.Liver cell
	D.Kidney cell

Ans: Nerve cell

Q18.	Keeping in view the fluid mosaic model for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?
	A.Neither lipids, nor proteins can flip-flop
	B.Both lipids and proteins can flip-flop
	C.While lipids can rarely flip-flop, proteins can not
	D.While proteins can flip-flop, lipids can not

Ans: While lipids can rarely flip-flop, proteins can not

Q19.	Cell secretion is done by-
	A.Plastids
	B.ER
	C.Golgi apparatus
	D.Nucleolus

Ans: Golgi apparatus

Q20.	___________ increases the surface area for mitochondrial activity.
	A.Inner membrane
	B.Inter membrane space
	C.Matrix
	D.Cristae

Ans: Cristae
Explanation:
The inner membrane forms a number of foldings called cristae towards the matrix. These cristae increases the surface area.