Why is cholesterol necessary in the body?
A) It is important for energy production.
B) It is an important enzyme.
C) It is a building block for proteins.
D) It is a component of plasma membranes and is important for cell growth and division.
E) It makes up the genetic material.
Answer: D
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The squamous suture is the boundary between which bones?
A) frontal and nasal B) frontal and parietal C) nasal and vomer D) frontal and sphenoid E) parietal and temporal
How many erythrocytes are in each milliliter of blood?
a. 50 million b. 500 million c. 1 billion d. 5 billion e. 15 billion
The blood vessel that directly carries blood to the arm and shoulder is the
A) aorta. B) brachial artery. C) common carotid artery. D) subclavian artery. E) ulnar artery.
Which blood type is considered the universal donor type?
A. Type A B. Type B C. Type AB D. Type O