Equilibrial species are shaped by ____, and tend to have a ____
a. K-selection; small body and short generation time
b. r-selection; large body and long generation time
c. K-selection; large body and long generation time
d. r-selection; small body and long generation time
e. r-selection; large body and short generation time
ANSWER: c
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Which of the following is true about molecular methods of microorganism detection in foods?
A. They can be used to detect the presence of a single specific pathogen. B. They can be used to detect slow-growing pathogens. C. They can be used to detect viruses that are not easily cultured. D. All of the choices are correct.
Research conducted by G.J. Gorbsky and colleagues suggests that during anaphase, chromosomes move as a
consequence of ____.
a. a combined action of actin and microtubules b. the disassembly of kinetochore microtubules c. the movement of kinetochore microtubules d. constriction of the contractile protein actin e. sliding over or along kinetochore microtubules
Which hominid species provides us with the oldest indisputable evidence of bipedalism?
a. Paranthropus b. Australopithecus afarensis c. Ardipithecus ramidus d. Homo erectus e. Sahelanthropus tchadensis
Smooth muscle tissue ____
a. is found in the heart wall b. has parallel arrays of long cells c. is multinucleated d. contracts reflexively e. is found in the walls of soft internal organs