Which of the following is not true regarding sickle-cell disease?

A. It is a cause of anemia.
B. It is advantageous in that it can protect carriers against malaria.
C. It is caused by a recessive allele that modifies the structure of hemoglobin.
D. It is a cause of malaria.
E. It is due to a hereditary hemoglobin defect.


Answer: D

Anatomy & Physiology

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Answer the following statements true (T) or false (F)

1. The primary source of energy used by the body is a carbohydrate. 2. The only group of organic compounds that contains sugar are the carbohydrates. 3. A centimeter is about 2.5 inches in length.

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Which of the following is a connective tissue sheath that surrounds an individual muscle fiber?

A. Tendon B. Endomysium C. Perimysium D. Fascia E. Epimysium

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Individual muscle cells are surrounded by what connective tissue?

A) endomysium B) perimysium C) sarcolemma D) sarcomere E) myofibrils

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Insulin increases the rate of _____ transport into cells

A. sucrose B. fructose C. glucose D. galactose E. lactose

Anatomy & Physiology