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.
Cell: The Unit of Life Class 11 MCQs Questions with Answers
Cell The Unit Of Life Class 11 MCQ Question 1.
The cytoplasmic connections from cell to cell are known as
(a) middle lamella
(b) plasmodesmata
(c) cell membrane system
(d) endoplasmic reticulum
Answer
Answer: (b) plasmodesmata
Cell The Unit Of Life MCQ Question 2.
Bacterial flagella is made up of
(a) tubulin
(b) flagellin
(c) chitin
(d) None of these
Answer
Answer: (b) flagellin
Explanation:
Bacterial flagella is made up of protein flagellin.
MCQ On Cell The Unit Of Life Class 11 Question 3.
Plasmolysis occurs due to-
(a) Absorption
(b) Endosmosis
(c) Osmosis
(d) Exosmosis
Answer
Answer: (d) Exosmosis
Class 11 Biology Chapter 8 MCQ Question 4.
The term Cell was given by-
(a) Leeuwenhoek
(b) Robert hooke
(c) Flemming
(d) Robert Brown
Answer
Answer: (b) Robert hooke
Cell Unit Of Life Class 11 MCQ Question 5.
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
Answer
Answer: (a) 23 sr RNA
MCQs Of Biology Class 11 Chapter 8 Question 6.
Centrosome is found in-
(a) Cytoplasm
(b) Nucleus
(c) Chromosomes
(d) Nucleolus
Answer
Answer: (a) Cytoplasm
MCQ Questions For Class 11 Biology Chapter 8 Question 7.
Plasma membrane is
(a) impermeable
(b) semi-permeable
(c) completely permeable
(d) differentially permeable
Answer
Answer: (b) 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.
Cell The Unit Of Life Class 11 MCQ Pdf Question 8.
Middle lamella is made up of ___________.
(a) calcium sulphide
(b) calcium pectate
(c) calcium carbonate
(d) calcium chloride
Answer
Answer: (b) calcium pectate
Explanation:
Middle lamella is made up of calcium pectate.
MCQ Questions For Class 11 Biology Chapter Cell The Unit Of Life Question 9.
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
Answer
Answer: (a) 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.
Chapter 8 Biology Class 11 MCQs Question 10.
Which of the following does not have cell wall?
(a) Mycoplasma
(b) Bacteria
(c) PPLO
(d) Blue green algae
Answer
Answer: (a) Mycoplasma
Explanation:
Mycoplasma does not have cell wall.
PPLO (Pleuro Pneumonia Like Organisms)
Class 11 Cell The Unit Of Life MCQs Question 11.
Centrosome is found in-
(a) Cytoplasm
(b) Nucleus
(c) Chromosomes
(d) Nucleolus
Answer
Answer: (a) Cytoplasm
MCQ Of Chapter 8 Biology Class 11 Question 12.
The longest cell in human body is
(a) red blood cells
(b) white blood cells
(c) columnar epithelial cells
(d) nerve cells
Answer
Answer: (d) nerve cells
Explanation:
Nerve cells are the longest cells.
Class 11 Biology Chapter 8 MCQ With Answers Question 13.
The main site for synthesis of lipids is
(a) vacuoles
(b) RER
(c) SER
(d) Golgi body
Answer
Answer: (c) SER
Explanation:
The main site for synthesis of lipid is smooth endoplasmic reticulum.
Cell The Unit Of Life MCQ Class 11 Question 14.
The function of ribosomes is
(a) metabolism
(b) lipid synthesis
(c) protein synthesis
(d) photosynthesis
Answer
Answer: (c) protein synthesis
Explanation:
Ribosomes are called protein factories because they synthesize proteins.
Class 11 Bio Ch 8 MCQ Question 15.
Which is called Suicidal Bag?
(a) Centrosome
(b) Lysosome
(c) Mesosome
(d) Chromosome
Answer
Answer: (b) Lysosome
Question 16.
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
Answer
Answer: (a) both DNA and histones
Question 17.
The largest cell in the human body is-
(a) Nerve cell
(b) Muscle cell
(c) Liver cell
(d) Kidney cell
Answer
Answer: (a) Nerve cell
Question 18.
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
Answer
Answer: (c) While lipids can rarely flip-flop, proteins can not
Question 19.
Cell secretion is done by-
(a) Plastids
(b) ER
(c) Golgi apparatus
(d) Nucleolus
Answer
Answer: (c) Golgi apparatus
Question 20.
___________ increases the surface area for mitochondrial activity.
(a) Inner membrane
(b) Inter membrane space
(c) Matrix
(d) Cristae
Answer
Answer: (d) Cristae
Explanation:
The inner membrane forms a number of foldings called cristae towards the matrix. These cristae increases the surface area.
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