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Biology Laboratory Manual, 6/e
Darrell S. Vodopich, Baylor University
Randy Moore, University of Minnesota--Minneapolis

Exercise 45 - Human Biology

Choose the one answer that best answers the question.



1

Which part of the eye reacts with light to produce an image?
A)lens
B)iris
C)retina
D)optic nerve
2

Exactly, which structures of the retina are photosensitive?
A)optic nerve fibers
B)ganglion cells
C)bipolar cellD rods and cones
3

What occurs when the fovea is invaded by blood vessels?
A)This has no effect.
B)The fovea becomes a blind spot causing the individual to become blind.
C)The fovea becomes more sensitive to light and the person's vision improves.
D)The person's peripheral vision is reduced.
4

At what age does one's near point distance greatly increase?
A)10
B)30
C)50
D)70
5

While using an astigmatism test chart, how would you know if you have an astigmatism?
A)the circle would disappear
B)some of the lines would appear crooked or wavy
C)all of the lines would appear straight
D)the point would not move
6

How can determine if a person has nerve deafness?
A)The person is able to hear a tuning fork.
B)The person is only able to hear a tuning fork when it is place against the temporal bone.
C)The person cannot hear a tuning fork even when it is placed against the temporal bone.
D)By surgically examining the ear.
7

If a person is suffering from conduction deafness, which of the following structures may not be functioning correctly?
A)ossicles
B)semicircular canals
C)cochlea
D)auditory nerve
8

Which of the following foods would register on the tip of your tongue?
A)meat
B)grapefruit
C)table salt
D)candy
9

Which part of the taste bud is sensitive to the food molecules to register as a taste?
A)nerve cells
B)receptor cell
C)taste pore
D)cones and rods
10

If a person has a visual acuity of 20/17, what does this indicate?
A)the person is near sighted
B)the person is far sighted
C)the person has normal vision
D)the person has better than normal vision








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