Biology MCQs
Biology MCQs Test Preparation | Latest 2025 Quiz FPSC, NTS, KPPSC, PPSC, SPSC, BPSC, OTS, UTS, PTS, CTS, ATS, ETEA MCQs Test Questions.
In which of the following neurons length of dendrite is greater than axon_______________?
A: Sensory neuron
B: Motor neuron
C: Associative neuron
D: none of these.
Sensory neuron
Which of the following neuron has a single long dendron?
A: Sensory neuron
B: Motor neuron
C: Associative neuron
D: none of these.
Sensory neuron
Which of the following cytoplasmic extensions carry the message toward the cell body___________?
A: Dendrites
B: Axon
C: Both of these
D: none of these
Dendrites
Microscopic gaps between the neuron endings are called__________?
A: Transmitters
B: Synapses
C: Pores
D: Nodes
Synapses
What is the function of synapse________________?
A: To allow nerve impulse to move in backward direction
B: To decrease the speed of nerve impulse
C: To stop the nerve impulse
D: To provide cytoplasmic connection between neurons.
To decrease the speed of nerve impulse
Under resting membrane potentials:
A: Outer surface of neuron is more positive
B: Inner surface of neuron is more positive
C: Both of these surfaces are equally positive
D: none of these.
Outer surface of neuron is more positive
Which of the following ions are involved in the initiation of nerve impulse_______________?
A: Na+
B: K+
C: Fe
D: none of these
Na+
Maximum speed of nerve impulse transmission is____________?
A: 100 m/sec
B: 110 m/sec
C: 120m/sec
D: 130 m/sec.
120m/sec
Which of the following are responsible for the detection of changes in environment?
A: Receptors
B: Neurons
C: Effectors
D: All of these
Receptors
Any change in the environment of an organism is called___________?
A: Stimulus
B: Variation
C: Response
D: Reaction
Stimulus