Class 8 Practice – Level 2 – Set 2 – Cell Structure and Functions

Total questions: 25

Which of the following best describes the function of the cell membrane?

It provides shape to the cell.

It controls the movement of substances in and out of the cell.

It stores genetic material.

It synthesizes proteins.

None

Which organelle is known as the powerhouse of the cell?

Nucleus

Mitochondria

Ribosome

Golgi apparatus

None

What is the primary role of the ribosomes in a cell?

Energy production

Protein synthesis

Photosynthesis

Cellular respiration

None

Which of the following structures is found only in plant cells?

Mitochondria

Cell membrane

Chloroplasts

Ribosomes

None

The jelly-like substance inside the cell is known as:

Cytoplasm

Nucleus

Chloroplast

Cytoskeleton

None

What is the function of the Golgi apparatus?

Energy production

Protein modification and packaging

DNA replication

Photosynthesis

None

Which of the following best describes the cell wall?

It is found in all cells.

It provides protection and support to the cell.

It is involved in energy production.

It helps in protein synthesis.

None

What is the primary component of the cytoskeleton?

Carbohydrates

Proteins

Lipids

Nucleic acids

None

In which part of the cell does cellular respiration mainly occur?

Nucleus

Ribosomes

Mitochondria

Golgi apparatus

None

10.

Which of the following statements is true about eukaryotic cells?

They lack a nucleus.

They are always unicellular.

They contain membrane-bound organelles.

They do not have ribosomes.

None

11.

What structure regulates the exchange of materials between the nucleus and the cytoplasm?

Nuclear membrane

Cell membrane

Cytoplasm

Ribosomes

None

12.

Which organelle is involved in detoxifying harmful substances?

Mitochondria

Ribosomes

Smooth endoplasmic reticulum

Lysosomes

None

13.

The structure that aids in cell division by forming the spindle fibers is called:

Centrioles

Lysosomes

Nucleus

Golgi apparatus

None

14.

Which type of cell has a larger central vacuole?

Animal cell

Bacterial cell

Plant cell

Fungal cell

None

15.

What is the function of lysosomes in a cell?

Energy production

Digestion of waste materials

Protein synthesis

Photosynthesis

None

16.

Which of the following structures is involved in the synthesis of lipids?

Rough endoplasmic reticulum

Smooth endoplasmic reticulum

Ribosomes

Nucleus

None

17.

The fluid mosaic model describes:

The structure of the cell wall.

The arrangement of molecules in the cell membrane.

The organization of ribosomes in the cytoplasm.

The structure of the nucleus.

None

18.

Which organelle is responsible for packaging and distributing proteins?

Mitochondria

Golgi apparatus

Ribosomes

Nucleus

None

19.

What process occurs in the chloroplasts of plant cells?

Cellular respiration

Photosynthesis

Protein synthesis

DNA replication

None

20.

What is the role of the nucleolus within the nucleus?

Energy production

DNA replication

Ribosome production

Protein synthesis

None

21.

The part of the cell responsible for maintaining homeostasis is the:

Cell wall

Cell membrane

Cytoplasm

Nucleus

None

22.

The term "semi-permeable" in relation to the cell membrane means:

It allows all substances to pass through.

It allows only certain substances to pass through.

It prevents all substances from passing through.

It allows gases to pass but not liquids.

None

23.

Which of the following organelles contains digestive enzymes?

Peroxisomes

Lysosomes

Golgi apparatus

Mitochondria

None

24.

What is the role of the rough endoplasmic reticulum?

Synthesis of lipids

Modification of proteins

Energy production

Detoxification

None

25.

Which of the following is NOT a function of the cell membrane?

Protection against environmental changes

Regulation of cell shape

Energy production

Communication with other cells

None

1 out of 25

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Class 8 Practice – Level 2 – Set 2 – Cell Structure and Functions

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