Class 9 Practice Level 3 – Set 2 – The Fundamental Unit of Life

Total questions: 15

The phase of the cell cycle in which the cell prepares for mitosis is called:

Topic: Cell Division

G1 phase

S phase

G2 phase

M phase

None

Which of the following statements about phospholipids is incorrect?

Topic: Cell Membrane

They form bilayers in aqueous environments.

They have hydrophobic tails and hydrophilic heads.

They are involved in energy storage.

They are a major component of cell membranes.

None

Mitochondrial DNA is inherited:

Topic: Mitochondrial DNA

Paternally

Maternally

Equally from both parents

Randomly

None

The enzyme ribulose bisphosphate carboxylase/oxygenase (RuBisCO) is involved in which process?

Topic: Photosynthesis

Light-dependent reactions

Calvin cycle

Glycolysis

Krebs cycle

None

Which component of the cytoskeleton is responsible for muscle contraction?

Topic: Cytoskeleton

Microtubules

Intermediate filaments

Actin filaments

Centrioles

None

Apoptosis is a process of:

Topic: Apoptosis

Uncontrolled cell growth

Programmed cell death

Cellular differentiation

DNA replication

None

Ribosomes are composed of:

Topic: Ribosomes

DNA and proteins

RNA and lipids

RNA and proteins

DNA and lipids

None

Which of the following factors can denature an enzyme?

Topic: Enzyme Activity

Low temperature

Neutral pH

High temperature

Low substrate concentration

None

Lysosomes are formed from which organelle?

Topic: Lysosomes

Endoplasmic reticulum

Golgi apparatus

Mitochondria

Nucleus

None

10.

Aquaporins are specialized for the transport of:

Topic: Membrane Transport Proteins

Ions

Glucose

Water

Amino acids

None

11.

Which type of cell junction forms a barrier to prevent the leakage of extracellular fluid?

Topic: Cell Junctions

Tight junctions

Desmosomes

Gap junctions

Plasmodesmata

None

12.

Which molecule is the primary carrier of energy in cells?

Topic: Cellular Metabolism

NADH

FADH2

ATP

Glucose

None

13.

The process by which cells ingest external fluid, macromolecules, and large particles, including other cells, is called:

Topic: Endocytosis

Exocytosis

Phagocytosis

Pinocytosis

Autophagy

None

14.

Which type of signalling involves the release of neurotransmitters at a synapse?

Topic: Cell Signalling

Endocrine signalling

Paracrine signalling

Autocrine signalling

Synaptic signalling

None

15.

Cadherins are involved in:

Topic: Cellular Adhesion

Signal transduction

Cell adhesion

Metabolic pathways

Genetic regulation

None

1 out of 15

Class 9 Practice Level 3 – Set 2 – The Fundamental Unit of Life

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