A. Ganglia
B. Longitudinal nerves
C. Lateral nerves
D. none of these.
Show AnswerAnswer = Option D
MCAT Biology
Hydra has
A. Brain
B. Nerves
C. Neuron-cells
D. All of these
Show AnswerAnswer = Option C
Any change in the environment of an organism is called
A. Stimulus
B. Variation
C. Response
D. Reaction
Show AnswerAnswer = Option A
Which of the followings are effectors?
A. Muscles
B. Glands
C. Sensory organs
D. Both ‘a’ & ‘b’
Show AnswerAnswer = Option D
Which of the following are responsible for the detection of changes in environment?
A. Receptors
B. Neurons
C. Effectors
D. All of these
Show AnswerAnswer = Option A
Co-ordination results in
A. Regulation of body functions
B. Organization of body functions
C. Integration of body functions
D. All of these
Show AnswerAnswer = Option D
Maximum speed of nerve impulse transmission is
A. 100 m/sec
B. 110 m/sec
C. 120m/sec
D. 130 m/sec.
Show AnswerAnswer = Option C
Na+ -K+ ATPase pump is important for:
A. Maintenance of resting potential.
B. Massive out flux of K+ after depolarization.
C. Recovery of resting potential.
D. Conversion of resting potential into action potential.
Show AnswerAnswer = Option C
Normal action potential of a neuronal cell is :
A. plus 50 mv
B. plus 60 mv
C. plus 70 mv
D. plus 80 mv
Show AnswerAnswer = Option A
Normal resting membrane potential of a neuron is
A. ? 50 mv
B. ? 60 mv
C. ? 70 mv
D. ? 80 mv
Show AnswerAnswer = Option C