The male sage grouse who is “displaying” is likely _____
a. indicating that he are ready to spar with other males
b. claiming part of the territory as his own
c. attracting a mate in a monogamous union
d. attracting a mate in a polygamous union
e. indicating that he has won a mate
ANSWER: d
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A bacterial "bloom" is:
A. the reproductive parts of bacteria B. malformation of flowers caused by bacterial infections C. unusual coloring of the water of lakes, ponds, or the sea caused by high numbers of bacteria D. souring of milk caused by bacteria E. swelling of a wound because of bacterial infection
While synthesizing a new blue pigment, a chemist notices that the new compound accumulates between an aqueous (water) environment and a hydrophobic environment
When added to a mixture of oil and water, the pigment creates a blue ring around the droplets of oil. Which of the following statements best describes this new pigment? A) The pigment is a polar molecule and is forming hydrogen bonds with both the water and oil molecules. B) The pigment is hydrophilic and will not form hydrophobic bonds with the oil. C) The pigment is amphipathic, having polar and nonpolar regions. D) The pigment is neither polar nor nonpolar; it is apolar. E) The pigment is probably hydrophobic and is attempting to bond with the oil.
A Native American tradition uses a "tea" made by soaking willow bark in water as a pain-reliever. Does it work? Why?
What will be an ideal response?
Animals directly evolved from
A) plants. B) protists. C) fungi. D) bacteria.