Specialised Cells Quiz

What is the main function of a neurone?

• Transmitting electrical and chemical signals

• Producing hormones

• Absorbing nutrients from the environment

• Regulating body temperature

Describe the structure of a root hair cell.

• A root hair cell has a rigid cell wall made of cellulose.

• Root hair cells lack a cell membrane.

• The structure of a root hair cell includes chloroplasts for photosynthesis.

• The structure of a root hair cell includes a root hair projection, central vacuole, nucleus, and cell membrane.

How is the structure of a root hair cell adapted to its function?

• The root hair cell has a spherical shape

• The root hair cell has a low concentration of mitochondria

• The root hair cell lacks a cell membrane

• The root hair cell has a large surface area, thin cell walls, and a high concentration of mitochondria.

Which part of the neurone receives signals from other cells?

• Dendrites

• Synapse

• Axon

• Nucleus

What is the function of the root hair cell in plants?

• Absorption of water and minerals from the soil

• Transport of nutrients within the plant

• Production of oxygen through photosynthesis

• Protection against herbivores

Explain the role of the axon in a neurone.

• The axon stores nutrients for the neurone.

• The axon transmits nerve impulses away from the cell body.

• The axon is responsible for producing neurotransmitters.

• The axon receives nerve impulses from the cell body.

What is the purpose of the cytoplasm in a root hair cell?

• To provide a medium for cellular processes

• To store excess water

• To regulate cell division

• To provide structural support

How does the myelin sheath help in the function of a neurone?

• The myelin sheath helps in releasing neurotransmitters from the axon.

• The myelin sheath helps in reducing the number of dendrites on the neurone.

• The myelin sheath helps in faster transmission of electrical impulses by insulating the axon.

• The myelin sheath helps in increasing the size of the neurone cell body.

What is the function of the nucleus in a root hair cell?

• Regulate cell shape

• Control cell activities and contain genetic material (DNA)

• Store water and nutrients

• Produce energy through photosynthesis

Why is the cell membrane of a neurone important for its function?

• The cell membrane has no impact on the function of a neurone.

• The cell membrane is only important for protecting the cell from external threats.

• The cell membrane is crucial for regulating the flow of substances and maintaining cell structure and communication.

• The cell membrane is primarily responsible for energy production within the cell.