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NCERT solutions for Class 11 Biology chapter 8 - Cell: The Unit of Life

Biology Textbook for Class 11

Chapters

NCERT Biology Class 11

Biology Textbook for Class 11

Chapter 8 - Cell: The Unit of Life

Page 141

Q 1 | Page 141

Which of the following is not correct?

(a) Robert Brown discovered the cell.

(b) Schleiden and Schwann formulated the cell theory.

(c) Virchow explained that cells are formed from pre-existing cells.

(d) A unicellular organism carries out its life activities within a single cell.

Q 2 | Page 141

New cells generate from

(a) bacterial fermentation       

(b) regeneration of old cells

(c) pre-existing cells              

(d) abiotic materials

Q 3 | Page 141

Match the following

  Column I   Column II
a Cristae 1 Flat membranous sacs in stroma
b Cisternae 2 Infoldings in mitochondria
c Thylakoids 3 Disc-shaped sacs in Golgi apparatus
Q 4 | Page 141

Which of the following is correct:

(a) Cells of all living organisms have a nucleus.

(b) Both animal and plant cells have a well defined cell wall.

(c) In prokaryotes, there are no membrane bound organelles.

(d) Cells are formed de novo from abiotic materials.

Q 5 | Page 141

What is a mesosome in a prokaryotic cell? Mention the functions that it performs.

Q 6 | Page 141

How do neutral solutes move across the plasma membrane? Can the polar molecules also move across it in the same way? If not, then how are these transported across the membrane?

Q 7 | Page 141

Name two cell-organelles that are double membrane bound. What are the characteristics of these two organelles? State their functions and draw labelled diagrams of both?

Q 9 | Page 141

Multicellular organisms have division of labour. Explain.

Q 10 | Page 141

Cell is the basic unit of life. Discuss in brief.

Q 11 | Page 141

What are nuclear pores? State their function.

Q 12 | Page 141

Both lysosomes and vacuoles are endomembrane structures, yet they differ in terms of their functions. Comment.

Q 13.1 | Page 141

Describe the structure of the following withthe help of labelled diagrams

Nucleus

Q 13.2 | Page 141

Describe the structure of the following withthe help of labelled diagrams.

Centrosome

Q 14.1 | Page 141

What is a centromere?

Q 14.2 | Page 141

How does the position of centromere form the basis of classification of chromosomes. Support your answer with a diagram showing the position of centromere on different types of chromosomes.

NCERT Biology Class 11

Biology Textbook for Class 11

NCERT solutions for Class 11 Biology chapter 8 - Cell: The Unit of Life

NCERT solutions for Class 11 Biology chapter 8 (Cell: The Unit of Life) include all questions with solution and detail explanation from Biology Textbook for Class 11. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has created the CBSE Biology Textbook for Class 11 solutions in a manner that help students grasp basic concepts better and faster.

Further, we at shaalaa.com are providing such solutions so that students can prepare for written exams. These NCERT textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 11 Biology chapter 8 Cell: The Unit of Life are Cell Theory, Structure of Prokaryotic and Eukaryotic Cells, Plant Cell and Animal Cell, Structure and Functions of Cell Envelope, Cell Membrane, Cell Wall, Cell Organelles, Endomembrane System, Mitochondria, Ribosomes, Plastids, Microbodies, Cytoskeleton, Cilia and Flagella, Centrosome and Centrioles, Nucleus, What is a Cell, Concept of Prokaryotic Cells, Prokaryotic Cells - Cell Envelope and Its Modifications, Prokaryotic Cells - Ribosomes and Inclusion Bodies, Overview of Cell, Cell Membrane, Cell Wall.

Using NCERT solutions for Class 11 Biology by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in NCERT Solutions are important questions that can be asked in the final exam. Maximum students of CBSE Class 11 prefer NCERT Textbook Solutions to score more in exam.

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