Allergies run in families because
A. immunoglobulins pass from mother to fetus.
B. immunoglobulins pass through breast milk.
C. the relative production of IgE is inherited.
D. the variable region of antibodies is genetically determined.
Answer: C
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Which of the following statements is not true of resin?
A. Resins are produced by many species of conifers. B. Resins deter insects and fungi. C. Some pine resins can be boiled down to produce a sweet syrup. D. Many resins are distilled to produce turpentine and other solvents. E. Some conifer resins are used to produce chemotherapy agents.
In humans, the structure in which T lymphocytes mature is called the ____________
A. thymus B. bone marrow C. lymph node D. bursa of fabricus
The number of sperm cells that form from a primary spermatocyte is
A) 2. B) 4. C) 16. D) 100.
Which form of hepatitis kills more people in the United States than AIDS?
a) Hepatitis A b) Hepatitis B c) Hepatitis C d) Hepatitis E