Valparaiso, Chile, is the city closest to Antarctica. With reduced CFC use, what health condition will probably change, and how?
A) There will be fewer skin cancers.
B) There will be an increase in cataracts.
C) There will be an increase in lung cancer.
D) There will be fewer bacterial infections.
A
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When referring to membrane glycolipids and glycoproteins, the term "glyco-" indicates ____
a. nonpolar carbohydrate groups are attached to the molecules b. polar carbohydrate groups are attached to the molecules c. the molecules are found on both the interior and exterior of the membrane d. the molecules are attached to the membrane by ionic bonds e. the molecules are rarely found on the membrane exterior
The movement of actin and myosin fibers in a muscle contraction contains all of the following steps except
A. the myosin head returns to its original conformation. B. the globular myosin head detaches from the actin filament. C. the myosin head attaches to the actin filament. D. the myosin filament advances relative to the actin filament. E. myosin rolls up from one end, forming a ball.
Biotechnology advances are important in medicine. Which field is interested in determining how drugs used to treat disease may be affected by an individual's genetic makeup?
A) cloning B) genetic engineering C) gene therapy D) pharmacogenomics
How were the cells made competent during the procedure?
A) Heat shock only B) Calcium chloride only C) Electroporation D) Heat shock along with the calcium chloride