What is Entamoeba's portal of entry?
A) Contaminated food or drinking water
B) Contaminated swimming areas-lakes, ponds
A) Contaminated food or drinking water
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Pigs have digitigrade locomotion because they walk on
(a) their ankles. (b) the soles of their feet. (c) the tips of their toes, which are modified as hooves. (d) their hands and knees.
Which of the following is inconsistent with the current understanding of how plants and microbes interact with each other?
A. Microbes produce chemical signaling molecules that plants can react to. B. Plants are able to send chemical signals to microbes but they are not able to receive signals from the microbes. C. Plants produce chemical signaling molecules that microbes can detect and react to. D. All of these statements are inconsistent with our understanding of how plants and microbes interact with each other.
Research has shown that commercial fisheries place selective pressure on fish populations by harvesting mostly the
____ fish, resulting in ____.
a. young; aging populations b. larger; maturity at smaller sizes c. smaller; maturity at larger sizes d. prereproductive; declining birth rates e. postreproductive; no change in population size
Which of the following respiratory disorders might be cured in the future through the use of gene therapy?
A. asthma B. emphysema C. cystic fibrosis D. lung cancer E. pulmonary fibrosis