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Question (1)

QN002991

Why is the cell called the basic unit of life?

(A) It is the largest organ in the body
(B) All living organisms are made of cells
(C) It contains only water
(D) It can be seen without a microscope

Correct Answer: B

Explanation:

All living organisms are made of cells.

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Question (2)

QN002992

Which scientist first observed cells in cork using a microscope?

(A) Antonie van Leeuwenhoek
(B) Robert Hooke
(C) Louis Pasteur
(D) Charles Darwin

Correct Answer: B

Explanation:

Robert Hooke observed cells in cork.

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Question (3)

QN002993

The tiny compartments observed by Robert Hooke in cork were called:

(A) tissues
(B) vacuoles
(C) cells
(D) nuclei

Correct Answer: C

Explanation:

Hooke named the compartments as cells.

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Question (4)

QN002994

Which statement best explains why cells are considered basic units?

(A) Cells are made of tissues
(B) Cells perform all basic life functions
(C) Cells are visible to everyone
(D) Cells contain only one substance

Correct Answer: B

Explanation:

Cells perform all essential life processes.

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Question (5)

QN002995

Which of the following organisms consists of only one cell?

(A) Human being
(B) Mango tree
(C) Amoeba
(D) Fish

Correct Answer: C

Explanation:

Amoeba is unicellular.

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Question (6)

QN002996

Organisms made up of a single cell are called:

(A) multicellular organisms
(B) unicellular organisms
(C) tissue organisms
(D) organ systems

Correct Answer: B

Explanation:

Single-celled organisms are unicellular.

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Question (7)

QN002997

In unicellular organisms, all life activities are performed by:

(A) tissues
(B) organs
(C) a single cell
(D) organ systems

Correct Answer: C

Explanation:

One cell performs all activities.

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Question (8)

QN002998

Which cell structure controls all activities of the cell?

(A) Cell membrane
(B) Cytoplasm
(C) Nucleus
(D) Vacuole

Correct Answer: C

Explanation:

The nucleus controls cell activities.

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Question (9)

QN002999

The jelly-like substance present inside the cell membrane is called:

(A) nucleus
(B) cell wall
(C) cytoplasm
(D) chlorophyll

Correct Answer: C

Explanation:

Cytoplasm is jelly-like in nature.

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Question (10)

QN003000

The boundary that separates the contents of the cell from the surroundings is the:

(A) nucleus
(B) cytoplasm
(C) cell membrane
(D) vacuole

Correct Answer: C

Explanation:

Cell membrane forms the boundary.

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Question (1)

Why is the cell called the basic unit of life?

Explanation:

Link:

Question (2)

Which scientist first observed cells in cork using a microscope?

Explanation:

Link:

Question (3)

The tiny compartments observed by Robert Hooke in cork were called:

Explanation:

Link:

Question (4)

Which statement best explains why cells are considered basic units?

Explanation:

Link:

Question (5)

Which of the following organisms consists of only one cell?

Explanation:

Link:

Question (6)

Organisms made up of a single cell are called:

Explanation:

Link:

Question (7)

In unicellular organisms, all life activities are performed by:

Explanation:

Link:

Question (8)

Which cell structure controls all activities of the cell?

Explanation:

Link:

Question (9)

The jelly-like substance present inside the cell membrane is called:

Explanation:

Link:

Question (10)

The boundary that separates the contents of the cell from the surroundings is the:

Explanation:

Link:

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