Antacids neutralize acid by the following reaction. Identify the salt in the following equation: Mg(OH)2 + 2HCl ? MgCl2 + H2O
A) Mg(OH)2
B) HCl
C) MgCl2
D) H2O
E) None of the answers is correct.
C
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Cluster-of-differentiation antigens are found on
A) B cells, where they determine the antibody types that are made. B) B cells, where they make recognition of self antigens on macrophages possible. C) T cells, enabling them to recognize foreign antigens on macrophages. D) macrophages, enabling them to link with both B and T cells.
Which of the following cell components is not directly involved in synthesis or secretion?
a. ribosome b. rough endoplasmic reticulum c. Golgi body d. smooth endoplasmic reticulum e. lysosome
The plant response in which stems grow upward and roots grow downward is called
A. photoperiodism. B. thigmotropism. C. phototropism. D. gravitropism.
The transmission of enteric hepatitis is most effectively prevented by
A. safe sex practices. B. immunization. C. reducing aerosol dispersion. D. vector control. E. good public sanitation and personal hygiene.