In tigers, a recessive allele causes a white tiger (absence of fur pigmentation). If one phenotypically normal tiger that is heterozygous is mated to another that is phenotypically white, what percentage of their offspring is expected to be white?
A) 50%
B) 75%
C) 0%
D) 100%
E) 25%
Answer: A
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A monoecious plant could have
a. separate male and female flowers on the same plant. b. flowers that have both stamens and carpels in the same flower. c. either a male flower or a female flower on the same plant but never both. d. a and b. e. b and c.
The label on a container of margarine lists "hydrogenated vegetable oil" as the major ingredient. What is the result of adding hydrogens to vegetable oil?
A. The hydrogenated vegetable oil is less likely to clog arteries. B. The hydrogenated vegetable oil has fewer trans fatty acids. C. The hydrogenated vegetable oil stays solid at room temperature. D. The hydrogenated vegetable oil has a lower melting point. E. The hydrogenated vegetable oil has more "kinks" in the fatty acid chains.
Answer the following questions true (T) or false (F)
1. A molecule of glucose contains six carbon atoms, twelve hydrogen atoms, and six oxygen atoms. The proper way to write the molecular formula for glucose is 6C12H6O. 2. Acids increase the H+ concentration in a solution and so lower pH. 3. Blood pH is stabilized by carbonic acid (H2CO3 ) which releases H+ ions to lower pH and bicarbonate (HCO3-) which absorbs H+ ions to raise pH.
Erysipeloid is transmitted by
A. inhalation of spores from hides and wool of animals. B. ingestion of improperly cooked hot dogs. C. an abrasion on skin coming in contact with infected swine or other animals. D. contaminated soil entering deep puncture wounds. E. respiratory secretions.