1-A single odorant can bind to many olfactory receptors one gustatory receptor o
ID: 167871 • Letter: 1
Question
1-A single odorant can bind to
many olfactory receptors
one gustatory receptor
one G-coupled protein receptor
one olfactory receptor
many gustatory receptors
2-Nerves that stimulate smooth and cardiac muscle are
somatic motor neurons
dependent upon electrical stimuli
of the autonomic nervous system
somatic motor fibers
none of the above
3-Synaptic vesicles in the end bulb of a nerve release __________________, which moves into the synaptic cleft near the motor end plate.
calcium
sodium
acetylcholine
nicotinic receptors
electrical signals
4-Damaged hair cells in the ear
are replaced by basal cells
are replaced by supporting cells
regrow
cause deafness
none of the above
5-The portion of the brain that leads to emotion and memory involved in smell and taste includes all of the following EXCEPT the
thalamus
hypothalamus
hippocampus
limbic system
frontal cortex
6-Retinal neurons responsible for color vision are known as
bipolar cells
ganglion cells
rods
cones
amacrine cells
7-Myofibrils are made up of three types of proteins which include
myosin, actin, nebulin
contractile, regulatory, structural
contractile, titin, nebulin
alpha-actinin, dystrophin, myomesin
alpha-actinin, myosin, titin
8-When the myosin head attaches to its binding site on actin, it is known as
cross-bridge
power stroke
detachment
contraction
hydrolysis
9-Sarcomeres shorten by
shortening of myosin and actin
detachment of titin from myosin
extension of nebulin
sliding of actin and myosin
extension of H zone
10-Calcium is used to initiate muscle contraction by all of the following EXCEPT
opening ryanodine receptors
altering the binding of tropomyosin to actin
binding to titin
initiating release of Ach
altering the shape of troponin
Explanation / Answer
Ans 1 option A many olfactory receptors
An individual odorant can bind to mutiple olfactory receptors. These activated olfactory receptors trigger nerve impulses which transmit information to the brain about a particular odor.
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