On a field trip, you observe red, tubular flowers along the trail. You will expect them to be pollinated by
A. bees.
B. hummingbirds.
C. moths.
D. beetles.
E. bats.
B. hummingbirds.
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The collapse of the western Atlantic cod fishery is blamed on which of the following?
a. Overharvesting b. Climate change c. Invasive species d. Habitat loss
Scientists at the biotechnology company Genentech created the first recombinant DNA product for use in humans. Approved by the Food and Drug Administration in 1982, this product was ________
A) a gene chip B) chymosin C) insulin D) human growth hormone E) erythropoietin
Which of the following represents the correct order of adult human teeth, beginning at the front and moving right along the bottom jaw?
A. Incisors, canines, premolars, molars B. Incisors, molars, canines, premolars C. Incisors, premolars, molars, canines D. Incisors, canines, molars, premolars E. Canines, incisors, premolars, molars
Cellulose is _____
A) a polymer composed of fructose monomers B) a storage polysaccharide for energy in plant cells C) used by plants to make glycogen D) a major structural component of plant cell walls E) a monomer of starch.