Knowing the atomic mass of an element allows inferences about which of the following?
A) the number of electrons in the element
B) the number of protons in the element
C) the number of protons plus neutrons in the element
D) the number of protons plus electrons in the element
C
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The immunity of some black Africans to malaria is probably due to their
A. general health. B. cultural practices. C. age. D. genetic background.
Cystic fibrosis is autosomal recessive. This means that
A) both sexes can be affected and can "skip" generations through carriers. B) carrier mothers pass the mutation to some of their sons, but not to their daughters. C) each affected individual has at least one affected parent. D) both sexes are affected because new mutations occur frequently.
Integration of body functions is controlled by
the a. respiratory system. b. nervous system. c. endocrine system. d. defense system. e. nervous system and the endocrine system.
Which of the following is NOT a physiological effect of endotoxin exposure?
a. tissue necrosis b. hemorrhagic shock c. rapid increase in the numbers of lymphocytes d. fever