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
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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.
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
Individual muscle cells are surrounded by what connective tissue?
A) endomysium B) perimysium C) sarcolemma D) sarcomere E) myofibrils
Insulin increases the rate of _____ transport into cells
A. sucrose B. fructose C. glucose D. galactose E. lactose