Cell: The Unit of Life Practice Questions
Class 11 · Biology · 2370 free MCQs with instant results and detailed explanations.
2370
Total
733
Easy
1180
Medium
457
Hard
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Topics in Cell: The Unit of Life
Cell Theory
569
Cell Organelles
598
Prokaryotic Cell
591
Eukaryotic Cell
612
Sample Questions from Cell: The Unit of Life
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
Which of the following statements is NOT part of the cell theory?
A.
All living organisms are composed of cells.
B.
Cells are the basic unit of life.
C.
All cells arise from existing cells.
D.
Cells can spontaneously generate from non-living matter.
Show Answer & Explanation
Correct Answer: D
The statement about cells spontaneously generating from non-living matter is incorrect; cell theory states that all cells arise from pre-existing cells.
Q2
Easy
Who is known for coining the term 'cell' while studying cork under a microscope?
A.
Robert Hooke
B.
Anton van Leeuwenhoek
C.
Matthias Schleiden
D.
Theodor Schwann
Show Answer & Explanation
Correct Answer: A
Robert Hooke is credited with the discovery of cells when he observed cork slices under a microscope and coined the term 'cell'.
Q3
Easy
Which of the following is a correct implication of the cell theory?
A.
All cells have a nucleus.
B.
Cells can perform all necessary life functions.
C.
All organisms are unicellular.
D.
All cells are identical in structure and function.
Show Answer & Explanation
Correct Answer: B
Cell theory implies that cells are the basic units capable of performing all essential life functions, though not all cells have a nucleus, and not all organisms are unicellular.
Q4
Medium
Which of the following statements is NOT part of the Cell Theory?
A.
All living organisms are composed of cells.
B.
Cells arise from pre-existing cells.
C.
Cells are the basic unit of life.
D.
Cells can spontaneously generate.
Show Answer & Explanation
Correct Answer: D
The Cell Theory states that all living organisms are made of cells, that cells are the basic unit of life, and that all cells arise from pre-existing cells. Spontaneous generation is a discredited theory.
Q5
Medium
Which of the following is a main concept of the Cell Theory?
A.
Cells can be created from non-living matter.
B.
Cells are immortal and undying.
C.
All organisms are made up of one or more cells.
D.
Cells cannot carry out metabolism.
Show Answer & Explanation
Correct Answer: C
A fundamental principle of the Cell Theory stipulates that all living organisms are made up of one or more cells, which are the basic unit of life.
Q6
Medium
In which cellular structure is genetic material stored?
A.
Nucleus
B.
Ribosome
C.
Mitochondria
D.
Endoplasmic Reticulum
Show Answer & Explanation
Correct Answer: A
The nucleus is the organelle that contains the cell's genetic material (DNA), which is essential for cell growth, metabolism, and reproduction.
Q7
Medium
Which cellular component is responsible for protein synthesis?
A.
Lysosome
B.
Ribosome
C.
Nucleus
D.
Golgi Apparatus
Show Answer & Explanation
Correct Answer: B
Ribosomes are the cellular structures that translate messenger RNA to synthesize proteins, making them essential for cell function.
Q8
Hard
Which of the following statements is NOT part of the Cell Theory?
A.
All living organisms are made of cells.
B.
Cells arise only from pre-existing cells.
C.
Cells are the basic unit of life.
D.
All cells contain a nucleus.
Show Answer & Explanation
Correct Answer: D
Not all cells contain a nucleus; for example, prokaryotic cells do not.
Q9
Hard
Which of the following best explains the significance of the Cell Theory in biology?
A.
It describes the chemical composition of cells.
B.
It outlines the evolutionary process of organisms.
C.
It provides a framework for understanding the structure and function of all living things.
D.
It explains the role of DNA in heredity.
Show Answer & Explanation
Correct Answer: C
The Cell Theory is fundamental as it helps to understand the cellular basis of life.
Q10
Hard
In which year was the term 'Cell' first coined?
A.
1665
B.
1838
C.
1855
D.
1676
Show Answer & Explanation
Correct Answer: A
Robert Hooke coined the term 'Cell' in 1665 when he observed cork cells.
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Cell: The Unit of Life — Class 11 Biology Practice Questions Online
This page contains 2370 practice MCQs for the chapter Cell: The Unit of Life in Class 11 Biology. The questions are organized by difficulty — 733 easy, 1180 medium, 457 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 4 topics, giving you comprehensive coverage of the entire chapter.