The type of reproductive isolation exhibited by 13-
year and 17-year cicadas is
a. spatial.
b. behavioral.
c. mechanical.
d. temporal.
e. ecological.
Answer: d
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A localized collection of pus in a wound is termed a(n)
A. leukocyte. B. dead tissue. C. granulation mound. D. abscess.
Answer the following statements true (T) or false (F)
1. When Ron Evans generated transgenic mice in which the gene PPAR-delta was constitutively active (i.e., always expressed), he found that these mice showed a shift from fast glycolytic fibers to slow oxidative fibers. Based on this, faster sprint speeds in the transgenic mice would also be predicted. 2. The fact that a quarterback can throw a football at approximately 50 miles per hour means that the muscles powering this throw must also be shortening at 50 miles per hour. 3. Walking or running are more energetically expensive forms of locomotion than either swimming or flying. 4. The only chyme molecule that is absorbed in significant amounts by the stomach is water.
Predict which organism would be in the best position to be able to undergo gluconeogenesis.
A. an organism with an elevated glucose level B. an organism with an elevated insulin level C. an organism with an elevated triglyceride level D. an organism with an elevated leptin level
Which component distributes water and nutrients throughout the plant body?
a. ground tissue
b. vascular tissue
c. dermal tissue
d. root
e. shoot