A narrowing of the coronary arteries may
a. be treated by balloon angioplasty
b. cause a heart attack.
c. be treated by coronary bypass surgery.
d. be treated by laser
e. include all of these.
Answer: e
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Which of the following statements about antibody-mediated immunity is CORRECT?
A. It primarily defends against viruses that have already infected cells. B. It is responsible for transplant tissue rejection. C. It protects the body against cells that become cancerous. D. It defends against parasites, bacteria, and viruses. E. It primarily defends against bacteria that have already infected cells.
Fossils older than ____ cannot be dated by their 14C content because ____
a. 60,000 years; most of the 14C has decayed by this time b. 12,000 years; half of the 14C has decayed by this time c. 6,000 years; older fossils do not contain carbon d. 2,000 years; most of the 14C has decayed by this time e. 500 years; half of the 14C has decayed by this time
List the major types of foods and beverages for which fungi are responsible, and give an example of the particular
fungus involved in each. What will be an ideal response?
An important adaptation related to reproduction and first seen in reptiles is _____.
Fill in the blank(s) with the appropriate word(s).