NECO 2001 Biology · Question 29

Which statement about a nerve cell is NOT correct?

Options

A.Sensory neurones have their cell bodies in the ganglia along dorsal wall
B.The axon conduct impulses away from the cell body
C.The cell body consists of the nucleus and cytoplasm.
D.The cell bodies of the motor neurones are located in the white matter of the spinal cord.
E.The dendrites transmit impulses towards the cell body

Answer: D. The cell bodies of the motor neurones are located in the white matter of the spinal cord.

Explanation written with AI and checked against the answer key

Analyze the question: We need the statement that is FALSE about a nerve cell (neurone).

Concept: In the spinal cord:

Grey matter (inner, butterfly/H-shaped) contains the cell bodies of neurones, such as motor neurones and relay neurones.
White matter (outer) contains the myelinated axons (nerve fibres). It looks white because of the myelin sheath. It has no cell bodies.
The dorsal root ganglion holds the cell bodies of sensory neurones, outside the spinal cord.

Check each option:

A. Sensory neurones have their cell bodies in the ganglia on the dorsal root. This is true.
B. The axon carries impulses away from the cell body. This is true.
C. The cell body consists of the nucleus and cytoplasm. This is true.
D. The cell bodies of motor neurones are in the white matter of the spinal cord. This is false. They are in the grey matter, specifically the ventral horn.
E. Dendrites transmit impulses towards the cell body. This is true.

Answer: The statement that is NOT correct is D.

Tip: Remember "Grey = Gather cell bodies" and "White = Wires (axons)". When a question asks for the "NOT correct" option, check each statement and find the one that is false.

AI can make mistakes. Report anything that looks wrong.