Within a large lake, gobies are small fish that are found in regions with shallow water and a
sandy bottom. This shallow, sandy region is the organism’s __________, whereas the lake
itself is the __________.
a. microhabitat; macrohabitat
b. macrohabitat; microhabitat
c. niche; macrohabitat
d. microhabitat; ecosystem
A
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A recent study compared the Homo sapiens genome with that of Neanderthals. The results of the study indicated that there was a mixing of the two genomes at some period in evolutionary history
Additional data consistent with this hypothesis could be the discovery of _____. A) some Neanderthal sequences not found in living humans B) a few modern H. sapiens with some Neanderthal sequences C) duplications of several Neanderthal genes on a Neanderthal chromosome D) some Neanderthal chromosomes that are shorter than their counterparts in living humans
The metabolic rate of an endotherm _____ at low environmental temperatures while the metabolic rate
of an ectotherm _____ at low environmental temperatures
a. falls; rises b. falls; falls c. rises; falls d. rises; rises e. it depends on the particular endotherm or ectotherm, so all of these are possible
Which of the following plant hormones was studied in the 1880s by Charles and Francis Darwin in experiments on phototropism?
A. abscisic acid B. ethylene C. cytokinin D. auxin E. gibberellin
Chlorophyll molecules are embedded in the membranes of the ________
Fill in the blank(s) with the appropriate word(s).