An initial disturbance in a system sets off a chain of events that does not favor stability
and often abruptly displaces a system from its steady state: what is that?
a. Positive Feedback
b. Negative Feedback
c. Disease
d. Homeost asis -CORRECT-a. positive feedback
What organ shrinks with age? a.
Prostate
b. Gums
c. Heart
d. All of the above ---ANSWER-- b. gums
Which of the following is true?
a. An infant will have a slower heart rate than an adult
b. The elderly have better temperature sensations
c. There are more sweat glands in an elderly person
d. There is less thirst perception in the elderly ---ANSWER-- d. there is less thirst
perception in the elderly
Which of the following is true?
a. Women snore more than men
b. Men have higher calcium levels
c. Women have a lower hemoglobin than men
d. Men have a lower creatinine level than women -CORRECT-c. Women have a lower
hemoglobin than men
An increase in normal adaptive response to the decreased availability of oxygen at high
altitude is termed which? a. Circadian
b. Acclimatization
c. Population
d. Diurnal ---ANSWER-- b. Acclimatization
1
,What does it mean when the cause of the disease is unwanted medical treatment? a.
Idiopathic
b. Ecogenetic
c. Genotypical
d. Iatrogenic -CORRECT-d. Iatrogenic
Which term is used for the first two months of life? a.
Infancy
b. Childhood
c. Prenatal
d. Neonatal ---ANSWER-- d. Neonatal
Which is an objectively identifiable aberration of the disease? a.
Symptom
b. Syndrome
c. Stage
d. Sign ---ANSWER-- d. Sign
Which of the following is true regarding catecholamines? a.
They are from the parasympathetic nervous system
b. They cross the blood brain barrier
c. They include epinephrine and norepinephrine
d. They cause of decrease in heart rate -CORRECT-c. They include epinephrine and
norepinephrine
Which of the following is a true statement?
a. Antidiuretic hormone is not important for blood volume regulation
b. Endorphins increase with stress, resulting in a decrease in pain perception
c. Epinephrine and cortisol act very differently
d. Cortisol negates epinephrine's activity ---ANSWER-- b. Endorphins increase with
stress, resulting in a decrease in pain perception
By what mechanism do lipid molecules cross cell membranes?
a. They use channel proteins as a membrane transport system
b. They are transported across the plasm a membrane by endocytosis and exocytosis
c. They use voltage-gated ion channels
d. They cross by diffusion -CORRECT-d. They cross by diffusion
Which of the following metabolic processes is a component of anabolic metabolism? a.
Protein synthesis
b. Glycolysis
c. Citric acid cycle
d. Oxidative phosphorylation -CORRECT-a. Protein synthesis
2
,Which of the following electrochemical mechanism is responsible for maintaining cell
volume?
a. The calcium pump
b. Glucose transporters
c. The sodium-potassium pump
d. ATP-binding cassette (ABC) transporters -CORRECT-c. The sodium-potassium
pump
Cellular hypoxia results in: a.
Enhanced ATP activity
b. Loss of intracellular calcium
c. Increased pH
d. Failure of the sodium-potassium pump -CORRECT-d. Failure of the
sodiumpotassium pump
A 75 yo woman develops weakness in her lower extremities after a prolonged period of
bed rest. This is most likely caused by: a. Atrophy of her leg muscles
b. Dysplasia of her leg muscles
c. Hypertrophy of her leg muscles
d. Hyperplasia of her leg muscles -CORRECT-a. Atrophy of her leg muscles
Which of the following types of cellular adaption is most likely to occur from chronic
ischemia?
a. Hypertrophy
b. Metaplasia
c. Atrophy
d. Hyperplasia ---ANSWER-- c. Atrophy
What is the mechanism of cellular injury that occurs when deep sea divers get 'the
bends'?
a. Free radicals form abnormal chemical bonds which destroy the cellular membranes
b. Carbon monoxide binds tightly to hemoglobin, preventing the RBCs from carrying O2
c. Intracellular calcium accumlation create muscle tetany
d. Gas bubbles from in the blood, blocking circulation and resulting in ischemia --
ANSWER-- d. Gas bubbles from in the blood, blocking circulation and resulting in
ischemia
Which type of cellular adaption would create the greatest concern if found on a biopsy
report?
a. Dysplasia
b. Metaplasia
c. Hyperplasia
3
, d. Atrophy -CORRECT-a. Dysplasia
Which of the following is the process by which mRNA is synthesized from single
stranded DNA?
a. Sense stranding
b. Replication
c. Translation
D. Transcription -CORRECT-d. Transcription
Which of the following is not one of the 4 cell types found in adult humans?
a. Epithelium
b. Connective tissue
c. Hematopoietic tissue
d. Nervous tissue -CORRECT-c. Hematopoietic tissue
If a patient has a recessive trait, which of the following is the genotype of this patient?
a. aa
b. AA
c. Aa
d. aA -CORRECT-a. aa
Which of the following chromosomal abnormalities has been linked with Down
Syndrome?
a. Translocation
b. Inversion
c. Deletion
d. Duplication -CORRECT-a. duplication
Which of the following refers to a deficiency of factor VIII that causes a bleeding
disorder?
a. Marfan Syndrome
b. Phenylketonuria
c. Hemophilia
d. Huntington ---ANSWER-- c. Hemophilia
Which of the following is a retrovirus that causes cancer?
a. Rhinovirus
b. Parvovirus
c. Epstein-Barr virus
d. Poxvirus -CORRECT-c. Epstein-Barr virus
Which of the following genes contributes specifically to some breast cancer? a.
Rb
4
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