Cell The Unit of Life Test

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Cell The Unit of Life Test - 82

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Weekly Quiz Competition

Question 1
1 / -0

Mitochondria are absent in

A
blue-green

B
bacteria

C
brown algae

D
red algae

Solution

Blue green algae (cyanobacteria) comes under prokaryotes whereas bacteria, brown algae and red algae are eukaryotes.
All prokaryotes lack nucleus, mitochondria, golgi bodies, chloroplasts and endoplasmic reticulum. The functions carried out by these organelles in the eukaryotes are carried out by the bacterial cell membrane in the prokaryotes.
So, the blue green algae lacks mitochondria.
Question 2
1 / -0

The prokaryotic cells are characterized by _______________.

A

A distant nuclear membrane

B
Distinct chromosomes

C
Absence of chromatin material

D
Absence of nuclear membrane

Solution

Prokaryotes lack an organized nucleus and other membrane-bound organelles. Prokaryotic DNA is found in a central part of the cell called the nucleoid. So, the prokaryotic cells are characterized by a distant nuclear membrane.
Hence the correct option is D.
Question 3
1 / -0

Which of the following is found in a plant cell but not in animal cell?

A
Cell wall

B
Mitochondria

C
Cell membrane

D
Nucleus
Solution
The cell wall is a rigid layer lying outside the plasma membrane of the cells of plants, fungi, and bacteria.
It is absent in the animal cell.
Mitochondria, cell membrane and nucleus are seen in both plant and animal cells.
So, the correct answer is 'Cell wall'.
Question 4
1 / -0

Primary lysosome fuse with unwanted cell organelle to form ______ .

A
Secondary lysosome

B
Phagosomes

C
Residual bodies

D
Autophagic vacuoles
Question 5
1 / -0

Which of the following organelles is surrounded by a single membrane ?

A
Mitochondria

B
chloroplast

C
Peroxisomes

D
Nucleus

Solution

Peroxisomes are single membrane bounded organelles found in nearly all eukaryotic cells. Rest of three are Double membrane.
So, the correct answer is 'peroxisomes'
Question 6
1 / -0

Which structures are involved in formation of cell?

A
Organelles

B
Biomolecules

C
Both a & b

D
None
Question 7
1 / -0

Which of the following are seen in prokaryotes?
(i) DNA
(ii) flagella
(iii) cytoskeleton
(iv) cell wall
(v)pili.

A
i, ii, iii, iv and v

B
Only i, iii and v

C
Only ii, iii and iv

D
Only i, ii, iv and v

Solution

All prokaryote have either DNA or RNA as genetic material.
Flagella is a structure that exists on both eukaryotic and prokaryotic cells and serves the purpose of moving the cell through the fluid environment in which that cell is found in.
The cytoskeleton is a complex, dynamic network of interlinking protein filaments present in the cytoplasm of all cells, including bacteria and archaea.
All prokaryotic cells have a stiff cell wall, located underneath the capsule
A pilus is a hair-like appendage found on the surface of many bacteria and archaea.
So the correct answer is option A.
Question 8
1 / -0

Jacob and Monad studied lactose metabolism in E. Coli and proposed the Operon concept. Operon concept is applicable for?

A
All prokaryotes

B
All prokaryotes and some eukaryotes

C
All prokaryotes and all eukaryotes

D
All prokaryotes and some protozoans

Solution

Jacob and Monad study lactose metabolism in E.coli and proposed the Lac operon concept. The concept explains the transport and metabolism of lactose in Escherichia coli and many other enteric bacteria. The concept of Lac-operon is applicable to All prokaryotes.
So, the correct answer is 'All prokaryotes'.
Question 9
1 / -0

Glyco proteins synthesized in______________.

A
Ribosome

B
Golgi apparatus

C
Plastid

D
Vacuole

Solution

Answer :
i) Glycoproteins are simply proteins with a sugar attached to them.
ii) The sugars can be attached to a protein in two locations in the cell, the endoplasmic reticulum, which produces N-linked sugars, and the Golgi apparatus, which produces O-linked sugars.
Therefore correct answer is option B.Golgi apparatus.
Question 10
1 / -0

Acrosome is a modified

A
Endoplasmic reticulum

B
cell membrane

C
nucleolus

D
Lysosome

Solution

Acrosome is a modified lysosome present anteriorly on the head segment of the human sperm
So, the correct answer is 'lysosome'

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Re-Attempt Weekly Quiz Competition

Cell The Unit of Life Test - 82

Result

Cell The Unit of Life Test - 82

Score

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Rank

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SHARING IS CARING

Question 1

blue-green

bacteria

brown algae

red algae

Solution

Question 2

A distant nuclear membrane

Distinct chromosomes

Absence of chromatin material

Absence of nuclear membrane

Solution

Question 3

Cell wall

Mitochondria

Cell membrane

Nucleus

Solution

Question 4

Secondary lysosome

Phagosomes

Residual bodies

Autophagic vacuoles

Question 5

Mitochondria

chloroplast

Peroxisomes

Nucleus

Solution

Question 6

Organelles

Biomolecules

Both a & b

None

Question 7

i, ii, iii, iv and v

Only i, iii and v

Only ii, iii and iv

Only i, ii, iv and v

Solution

Question 8

All prokaryotes

All prokaryotes and some eukaryotes

All prokaryotes and all eukaryotes

All prokaryotes and some protozoans

Solution

Question 9

Ribosome

Golgi apparatus

Plastid

Vacuole

Solution

Question 10

Endoplasmic reticulum

cell membrane

nucleolus

Lysosome

Solution

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