Which of the following is not a characteristic of an r-selected population?
A. many offspring produced
B. no parental care
C. extensive homeostatic capacity
D. short life span
E. early age of reproduction
Answer: C
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When considering nomenclature for scientific names, what is the difference between the two primates, Homo sapiens and Homo erectus?
A. One is a primate but the other is not. B. They are animals of a different kingdom. C. They are animals of a different order. D. They are animals of a different species. E. They are animals of a different genus.
A cerebrospinal fluid (CSF) culture was performed on a newborn in distress. After overnight incubation, small gram-positive bacilli with a soft zone of <-hemolysis grew on sheep blood agar. Based on this information, what results would be expected on the following tests: hippurate; Christie, Atkins, Munch-Petersen (CAMP); and motility?
a. Negative hippurate, positive CAMP, and negative motility b. Positive hippurate, negative CAMP, and positive motility c. Positive hippurate, positive CAMP, and positive motility d. Negative hippurate, negative CAMP, and negative motility
The amount of carbon dioxide in the
atmosphere has increased by approximately___ percent since 1990.
a. 5 b. 15 c. 25 d. 50 e. 100
Briefly describe how it is possible for large annelid tube worms to survive at a hydrothermal vent on the seafloor far
from any light source and photosynthetic organisms. What will be an ideal response?