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Quiz 6
Mdcat-past-papers - NUMS - Biology Quiz
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Board: NUMS | Subject: Biology |
101. Resting membrane potential measures:
-70mV
-70 volt
70mV
-90mV
102. Touch receptors are:
Pacinian's corpuscles
Olfactory receptors
meissner's corpuscles
nociceptor
103. A long extension of a nerve cell is called:
Axon
Auxins
Schwann cell
Dendrites
104. To study sex linkages in Drosophila,Morgan mated white eyed males with wild type red eyed female what will be the phenotyte of offspring?
All red eyed male and female
White eyed female and red eyed male
red eyed female and white eyed male
II white eyed female and male
105. Which of the following is an example of spiral-shaped bacteria?
Diplococcus pneumonia
Hyphomicrobium
Escherichia coli
Pseudomonas
106. During conduction of nerve impulse hyperpolarization would not occur:
Sodium gates didn't close in time
Potassium gates were not so lousy
Calcium gates open instantly
Sodium potassium pump stopped working
107. Which option given below characterizes refractory period?
Reversal of charges across the neural membrane
Change in the type of ions across the membrane
Next impulse can be conducted
Membrane potential +50mV
108. Neurotransmitter secreted at the synapse outside the CNS is:
Dopamine
Polypeptide
Androgen
Acetylcholine
109. Which of the following is a neurotransmitter?
Dopamine
Hydrochloric acid
Sodium ions
Calcium ions
110. The gap between neurons at a synapse is:
Synaptic knob
Synaptic cleft
Synaptic delay
synaptic vesicle
111. The molecule responsible for conveying messages from one neuron to the next are called:
Hormones
Activators
neurotransmitters
Enzymes
112. Place of production of neurotransmitter is:
Presynaptic membrane
Postsynaptic membrane
Dendrite
Synaptic cleft
113. What is the fate of a neurotransmitter after the transmission of nerve impulse across a synapse?
It is taken into post synaptic neuron
Remains bound to post synaptic membrane
Remains stay in the synaptic cleft
Broken down by enzymes
114. Which immediate change is brought about in the post synaptic membrane binding with excitatory neurotransmitter?
Calcium gates open
Sodium gates open
Sodium gates close
Sodium postassium pump ceases to work
115. Which of the following is a characteristics of electrical synapses?
Presence of neurotransmitters
Transmission of nerve impulse
Sodium potassium gradient
Absence of neurotransmitter
116. Functions of brainstem include all of the following Except:
Integration of reflexes
Autonomic control for respiration
Equilibrium and pressure regulation
Initiation of voluntary movement
117. Which brain portion is responsible for controlling body's coordination?
Medulla
Amygdala
Cerebellum
Pons
118. Grey matter of spinal cord does not contain:
Cell bodies of sensory neurons
Axons of motor neuron
Cell bodies of interneurons
Cell bodies of motor neurons
119. During complex activity of flight, birds require the coordination of many skeletal muscles. Which part of their brain has to be well developed?
Amygdala
Cerebrum
Cerebellum
Thalamus
120. Which part of the brain is actively used by a mathematician trying to formulate a new equation?
Hippocampus
Cerebrum
Amygdala
Pons
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