In humans, there are three genes encoding different nitric oxide synthase enzymes. These three genes form a ____
a. multigene locus
b. replicate gene family
c. multi-enzyme family
d. multigene family
e. gene grouping
ANSWER: d
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Which of the following human activities could contribute to the eutrophication of a lake? Check all that apply.
_____ dumping piles of leaves near a lake _____ planting trees around the periphery of the lake _____ washing clothes with soap in the lake _____ feeding the ducks in the lake _____ dumping plastic trash into the lake _____ fertilizing lawns near the lake Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about eutrophication? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
A relationship in which one organism is found on the surface of another is referred to as a(n) ________.
Fill in the blank(s) with the appropriate word(s).
The human egg is swept through the oviduct toward the uterus by
A) the beating of the egg's cilia. B) rhythmic contractions of the oviduct. C) rhythmic contractions of the uterus. D) the beating of cilia in the oviduct.
Which is incorrect about food-borne illnesses?
A. The top viruses that cause food-borne illnesses are Norwalk and Hepatitis A viruses. B. Reports of food poisoning are decreasing in the United States. C. Avoiding cross contamination in the kitchen can reduce the risk of food poisoning. D. Most cases of food poisoning occur in the home and are not reported. E. Food infection is associated with ingesting whole microbial cells.