BMS 108 LAB 1-10 Exam Questions and Correct Answers

BMS 108 LAB 1-10 Exam Questions and
Correct Answers
Question 1

As one odor blocks another odor from being perceived, this process is known as
olfactory ______________________ .

Correct Answer
masking



Question 2
A molecule splits dissociates in an aqueous biological solution and if it creates a
charge results in ___________________________ of those products.
Correct Answer
ionization



Question 3
The _______________ are involved in detecting linear movement and acceleration.
Correct Answer
utricle and saccule



Question 4
The _______________ is blind to light because it contains no photoreceptors.
Correct Answer
optic disc




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,Question 5
In the frog muscle we observed that the time of the contraction phase in a skeletal
muscle twitch was shorter than the time for the relaxation phase of that muscle.
Provide a brief explanation for why this occurs.
Correct Answer
The contraction phase occurs when calcium ions (Ca++) are released through
voltage-gated Ca++ channels and move down their electrochemical (EC), but the
relaxation phase occurs when calcium ions are being actively pumped against their
concentration gradient through a Ca++-ATPase pump.



Question 6
A heart rate below 60 bpm in a non-athletic individual is called sinus ___________,
whereas a heart rate above 100 bpm in a non-athletic individual is called sinus
_______________.
Correct Answer
bradycardia; tachycardia



Question 7
The blood cells that carry oxygen are called _____________ .
Correct Answer
red blood cells



Question 8

The innermost layer of the eye is called the ________ and possesses photoreceptor
cells that distinguish color called __________ and photoreceptor cells that distinguish
black, white and gray called ____________.

Correct Answer
retina; cones; rods




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,Question 9
A negative (absent) Babinski reflex should occur in a healthy adult that has no spinal
cord or brain injury.
Correct Answer
true



Question 10
The mean arterial pressure for an individual with a systolic pressure of 120 mm Hg
and a diastolic pressure of 87 mm Hg would be ___________ mm Hg.

Correct Answer
98



Question 11
Submersion of your head into cold water and holding your breath should result in...
Correct Answer
decrease in heart rate



Question 12
The biceps tendon reflex is an example of a disynaptic reflex.
Correct Answer
false



Question 13
A __________ is a rapid, unconscious, stereotyped response.
Correct Answer
reflex




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, Question 14

Conduction deafness could involve both the ear ossicles and/or tympanic
membrane.

Correct Answer
true



Question 15

The osmolarity of a solution containing 0.5 M KCl and 0.75 M NaCl would be
________________________ milliOsmolar (mOsm).

Correct Answer
2500



Question 16

An increase in [H+] in a solution would result in a(n) _______________________________ in
pH.

Correct Answer
decrease



Question 17
The movement of molecules from an area of high concentration to an area of low
concentration is known as _____________ .
Correct Answer
diffusion



Question 18

The process when one scent is overpowered by another scent is called olfactory
___________________________________ .

Correct Answer
masking




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