Which of the following cardiovascular diseases is caused by a narrowing of the arteries causing the heart to work harder when pumping?
A. heart attack
B. hypertension
C. stroke
D. All of the answer choices are caused by a narrowing of the arteries.
Answer: B
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Chromatin is made up of
a. DNA only. b. DNA, RNA, and protein. c. DNA and RNA. d. RNA and protein. e. DNA and protein.
Name the neuromuscular transmitter that is released into the synaptic cleft.
A. calcium ions B. creatine phosphate C. acetylcholine D. sodium ions E. ATP
Alveoli
A) are blind sacs that extend from tracheae. B) are found in gills. C) are thick-walled. D) are not permeable to dissolved oxygen. E) have a moist surface.
Which does not apply to ringworm infections?
A) caused by a worm B) can be acquired by direct or indirect contact C) caused by members of the normal skin biota D) may manifest as a round skin lesion with a scaly red margin E) may occur on the feet, groin, scalp, nails, or body