Which is an example of a clumped distribution of a population?
A. A tree species releases a poison to defend the soil around its roots, resulting in trees spaced evenly like a grid.
B. Multiple species join each other at the waterhole to drink.
C. Antelope travel in herds.
D. Two male hummingbirds have a confrontation on the border between their territories.
Answer: C
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Which regulatory mechanism is important in keeping glycolysis and the citric acid cycle in relative balance to each other?
A. Citrate inhibits phosphofructokinase 1. B. ADP up-regulates phosphofructokinase 1. C. ATP inhibits phosphofructokinase 1. D. AMP inhibits phosphofructokinase 1.
The conducting tissue found in vascular plants that functions in transportation of materials throughout the plant, but does not lend structural support to the stem is
A. xylem. B. phloem. C. sporopollenin. D. endosperm. E. lycophyll.
An individual's ____ determines its observable ____
a. phenotype; genotype b. genotype; phenotype c. gene location; allele d. heterozygote; homozygote e. homozygote; heterozygote
Which of the following drugs will be useful in the treatment of this disease?
A. antiviral drug B. antiprotozoal drug C. antiprion drug D. antifungal drug