The Fundamental Unit of Life Test

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The Fundamental Unit of Life Test - 8

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Weekly Quiz Competition

Question 1
1 / -0

“All cells arise from pre-existing cells” - who stated this?

A
Virchow

B
Robert Brown

C
Purkinje

D
Robert Hook

Solution

Rudolf Virchow presented the idea in 1855 that every cell arises from another (pre-existing) cell. This was a addition to the cell theory that was proposed earlier by Matthias Jakob Schleiden and Theodor Schwann.
Question 2
1 / -0

Which of the following is known as “physical basis of life”?

A
Mitochondria

B
Protoplasm

C
Gene

D
Nucleolus

Solution

According to Thomas Henry Huxley, the protoplasm is the physical basis of life. It is the living substance inside in the cell that contains all the cell organelles. It is a thick fluid or jelly-like substance.
Question 3
1 / -0

The term protoplasm was coined by:

A
Robert Hook

B
J.E.Purkinje

C
Kholl and Ruska

D
Haeckel

Solution

The term protoplasm was coined by Johann Evangelist Purkinje in 1839. Protoplasm is the fluid medium inside a cell in which different cell organelles are present.
Question 4
1 / -0

Find the incorrect statement:

A
Blue green algae is also called cyanobacteria.

B
Cell division takes place by fission or budding in prokaryotic cell.

C
Cytosol acts as a store of vital chemicals such as amino acids, glucose, vitamins, ions etc.

D
Plant cells are smaller than animal cells.

Solution

Plant cells can be larger than animal cells. Size of an animal cell varies from 10 to 30 micrometers while that of a plant cell ranges from 10 to 100 micrometers.
Question 5
1 / -0

The largest cell in the human body is:

A
Muscle cell

B
Nerve Cell

C
Kidney cell

D
Liver cell

Solution

The largest cell in the human body is the nerve cell. A nerve cell forms the functional unit of nervous system in animals for control and coordination.
Question 6
1 / -0

Which cell organelle is found only in plants?

A
Plastids

B
Golgi apparatus

C
Mitochondria

D
Ribosomes

Solution

Plastids are present only in plants cells. Chromoplasts and chloroplasts are coloured plastids whereas leucoplasts are colourless. Chloroplast contains chlorophyll which is essential for photosynthesis in plants. Plastids are absent in animal cells.
Question 7
1 / -0

Who proposed the Cell theory?

A
Schleiden & Schwann

B
Prophase

C
Watson & Crick

D
Mendel

Solution

The 'Cell theory' was proposed by Matthias Jakob Schleiden and Theodor Schwann. According to this theory, all living organisms are made up of cells. Rudolf Virchow also contributed to the Cell theory. He proposed that new cells arise from pre-existing cells.
Question 8
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Main difference between an animal cell and a plant cell is:

A
Movement

B
Nutrition

C
Growth

D
Respiration

Solution

Plants cells contain chlorophyll which is an essential requirement for photosynthesis. Animal cells lack chlorophyll. They obtain their food from plants. So, a plant cell and an animal cell differ in their modes of nutrition.
Question 9
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Match the following with the correct response:

(1) Largest cell (A) Mycoplasma

(2) Smallest cell (B) Bacteria

(3) Single cell (C) Amoeba

(4) Prokaryotic cell (D) Ostrich egg

A
1-C, 2-B, 3-D, 4-A

B
1-D, 2-A, 3-C, 4-B

C
1-A, 2-C, 3-B, 4-D

D
1-B, 2-D, 3-A, 4-C

Solution

Mycoplasma is a genus of bacteria that lack a cell wall around their cell membrane. Without a cell wall, they are unaffected by many common antibiotics that target cell wall synthesis. Mycoplasma species are the smallest free-living organisms. Prokaryote is a unicellular organism that lacks a membrane-bound nucleus (karyon), mitochondria, or any other membrane-bound organelle. T

(1) Largest cell (D) Ostrich egg

(2) Smallest cell (A) Mycoplasma

(3) Single cell (C) Amoeba

(4) Prokaryotic cell (B) Bacteria
Question 10
1 / -0

Which out of the following is living?
(a) Plasma membrane
(b) Cell-wall
(c) Protoplasm
(d) Nucleus

A
(a), (c) and (d) are correct

B
(a) and (b) are correct

C
(b) and (c) are correct

D
All of these

Solution

Plasma membrane, protoplasm and nucleus are living matter of a cell. Cell-wall is a non-living part of cell made up of cellulose.

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Re-Attempt Weekly Quiz Competition

(1) Largest cell	(A) Mycoplasma
(2) Smallest cell	(B) Bacteria
(3) Single cell	(C) Amoeba
(4) Prokaryotic cell	(D) Ostrich egg

The Fundamental Unit of Life Test - 8

Result

The Fundamental Unit of Life Test - 8

Score

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Rank

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SHARING IS CARING

Question 1

Virchow

Robert Brown

Purkinje

Robert Hook

Solution

Question 2

Mitochondria

Protoplasm

Gene

Nucleolus

Solution

Question 3

Robert Hook

J.E.Purkinje

Kholl and Ruska

Haeckel

Solution

Question 4

Blue green algae is also called cyanobacteria.

Cell division takes place by fission or budding in prokaryotic cell.

Cytosol acts as a store of vital chemicals such as amino acids, glucose, vitamins, ions etc.

Plant cells are smaller than animal cells.

Solution

Question 5

Muscle cell

Nerve Cell

Kidney cell

Liver cell

Solution

Question 6

Plastids

Golgi apparatus

Mitochondria

Ribosomes

Solution

Question 7

Schleiden & Schwann

Prophase

Watson & Crick

Mendel

Solution

Question 8

Movement

Nutrition

Growth

Respiration

Solution

Question 9

1-C, 2-B, 3-D, 4-A

1-D, 2-A, 3-C, 4-B

1-A, 2-C, 3-B, 4-D

1-B, 2-D, 3-A, 4-C

Solution

Question 10

(a), (c) and (d) are correct

(a) and (b) are correct

(b) and (c) are correct

All of these

Solution

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