A flower that has sepals, petals, and stamens, but lacks carpels, is known as:
a. complete and perfect.
b. complete and imperfect.
c. incomplete and perfect.
d. incomplete and imperfect.
e. almost complete and almost perfect.
d
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Imagine you are working in the laboratory. You have just raised 15g of water 1 degree Celsius. How many Calories of energy did you utilize to heat the water in this procedure?
A. 0.0015 B. 70 C. 15 D. 0.015 E. 1.5 F. 0.07
Refer to Figure 22-2. The common hominoid ancestor would be labeled __________ in the diagram
a. 13
b. 12
c. 11
d. 10
e. 9
Due to character displacement, two closely related species may differ most morphologically when they
A. occupy the same niche. B. are sympatric. C. occupy different niches. D. share a common ancestor. E. are allopatric.
The bacteria Pseudomonas aeruginosa produces a protein that is secreted into its environment. The protein inhibits synthesis of elongation factor 2 (another protein) in humans. This effect may sound dangerous, but it has been considered as a possible
treatment for hepatitis B. The protein produced by P. aeruginosa is a(n) A) endotoxin. B) exotoxin. C) biological weapon. D) biofilm.