Boiling water is a common method used to sterilize water that may be contaminated. Subjecting microbes to such high temperatures is an example of a(n) _________________ technique.
A) Microbicidal
B) Pasteurization
C) Tyndallization
D) Microbiostatic
E) Intermittent sterilization
A) Microbicidal
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The external morphological traits of two North American species of tree frog (Hyla versicolor and H. chrysoscelis) are
very similar; therefore, scientists use ____ to distinguish them.
a. internal anatomy b. behavioral traits c. homologous appendages d. skin coloration e. analogous structures
Antibiotics that are given by injection are said to have a/an ________ route of administration.
A. topical B. venal C. oral D. parenteral
Which is not a requirement for natural selection to occur?
A) Random mating B) Competition for limited resources C) Variation in the offspring D) Unequal reproductive success
What structure is formed from both fetal and maternal tissue?
A. Yolk sac B. Amnion C. Placenta D. Chorion