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mcq on Organization of Life for Students
Ribosomes are composed of:
a. RNA and DNA
b. DNA and proteins
c. RNA and fats
d. RNA and proteins
Option d – RNA and proteins
The fibrous Network that extends throughout the cell is called:
a. Cytoskeleton
b. Mitochondria
c. Nucleus
d. Lysosomes
Option a – Cytoskeleton
The rough endoplasmic reticulum is involved in:
a. Protein synthesis
b. Lipid synthesis
c. Sugar synthesis
d. Vitamin synthesis
Option a – Protein synthesis
Which of the following contains only ribosomes and lacks other organelles?
a. Plant cell
b. Animal cell
c. Bacterial cell
d. Virus particle
Option c – Bacterial cell
How many micrometres are there in one millimetre?
a. 10
b. 20
c. 1000
d. 200
Option c – 1000
Where are complex substances broken down into simpler ones?
a. Lysosomes
b. Ribosomes
c. Chromosomes
d. All of the above
Option a – Lysosomes
A group of ribosomes found together is called:
a. Polysomes
b. Lysosomes
c. Both (a) and (b)
d. None
Option a – Polysomes
Leucoplasts typically appear:
a. Green
b. Blue
c. Red
d. White
Option d – White
In plant cells, where can DNA be found?
a. Nucleus
b. Nucleus and chloroplasts
c. Nucleus, chloroplasts, and mitochondria
d. Chloroplasts and mitochondria
Option a – Nucleus
Suberin is found in the:
a. Cell wall
b. Plasma membrane
c. Mitochondria
d. Nucleus
Option a – Cell wall
Centrioles play a role in:
a. Protein synthesis
b. Cell division
c. Cell movement
d. Cell death
Option b – Cell division
Chromoplasts are typically located in:
a. Roots
b. Green leaves
c. Dried leaves
d. Flowers and fruits
Option d – Flowers and fruits
Which structure is missing in plant cells?
a. Cell walls
b. Vacuoles
c. Plastids
d. Centrioles
Option d – Centrioles
Pectin contains Salts of:
a. Calcium and manganese
b. Calcium and zinc
c. Calcium or magnesium
d. Zinc and magnesium
Option c – Calcium or magnesium
What provides structural support to the cell?
a. Cell wall
b. Vacuole
c. Plastid
d. Centriole
Option a – Cell wall
Which structures pass through the cell walls?
a. Plasmalemma
b. Plasmodesmata
c. Plasma membrane
d. Plastids
Option b – Plasmodesmata
Which organelles are responsible for giving color to plant cells?
a. Vacuoles
b. Cell wall
c. Golgi bodies
d. Plastids
Option d – Plastids
The Fluid present inside the vacuole is known as:
a. Cell sap
b. Vacuolar sap
c. Both (a) and (b)
d. None
Option b – Vacuolar sap
Which plastids contain both DNA and ribosomes?
a. Chloroplasts
b. Chromoplasts
c. Leucoplasts
d. All
Option a – Chloroplasts
Centrosome includes:
a. Nucleoli
b. Centrioles
c. Chromatin
d. Plastids
Option b – Centrioles
The division of the nucleus is termed:
a. Karyokinesis
b. Mitochondria
c. Ribosomes
d. Lysosomes
Option a – Karyokinesis
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