Exocrine glands secrete all of the following except
a. enzymes.
b. sweat.
c. milk.
d. saliva.
e. hormones.
E
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Sickle cell anemia is caused by a defect in the
A. oxygen-carrying pigment hemoglobin. B. ability of the blood to clot. C. ability of red blood cells to fight infection. D. chloride ion transport protein.
Why is the Hardy-Weinberg equation more accurate in predicting genotypic frequencies in the short run than in the long run?
A) The equation does not take epistasis into consideration. B) The Hardy-Weinberg equation is based on Mendel's second law of inheritance. C) The equation can be applied only to traits determined by single genes. D) Populations do not conform to the assumptions of the Hardy-Weinberg law.
Which extinct hominin first appeared about 1.9 million years ago and had a larger brain than Homo habilis, its immediate predecessor?
A) Homo ergaster B) Homo neanderthalensis C) Homo sapiens D) Australopithecus
Chlorine dioxide and ethylene oxide are gaseous sterilants.
Answer the following statement true (T) or false (F)