Potable water is water that
A) is considered safe to drink because it is completely sterile.
B) contains biosensors.
C) contains a dangerous number of microorganisms.
D) is transferred from one place to another.
E) contains low amounts of microorganisms and is considered safe to drink.
E
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Two genes on each of four homologous chromosomes (HC) are described here, but only one of each
pair of sister chromatids is listed (HC1 and HC2). Capital and lower case indicate different alleles of the same gene. What four gametes will result from a single chiasma if the chromosomes have the following genes: HC1: ab; HC2: AB?
a. Ab, AB, ab, aB b. Ab, Ab, aB, aB c. Aa, Bb, ab, Ab. d. Ab, Ab, AB, AB e. AB, AB, ab, ab
The sternum is a major site of red blood cell formation; therefore, the bones in the sternum must be ____ bones
a. compact b. spongy c. cartilaginous d. fibrous e. synovial
Normal bacterial inhabitants of the human body
a. are naturally resistant to antibiotics. b. are able to out-compete some invading pathogens and thus are one of the body's initial defense mechanisms. c. can be transformed into pathogenic forms if a person's resistance to disease is low. d. are unable to survive the human body's defense mechanisms. e. are able to out-compete some invading pathogens and thus are part of the body's innate immunity
Bee-pollinated flowers
A. are predominately blue or yellow. B. are red. C. have little odor. D. All of the choices apply.