The upper layer of the pelagic zone is the
A. benthic zone.
B. limnetic zone.
C. estuary.
D. photic zone.
E. continental shelf.
D. photic zone.
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Membrane proteins are not very soluble in water, because they possess long stretches of non-polar amino acids that are
A. too long to interact with the water molecules. B. hydrophobic. C. are transmembranal. D. hydrophilic. E. used as transport channels.
A fruit-bearing dioecious flower would have
A. an androecium. B. a gynoecium. C. both an androecium and a gynoecium. D. neither an androecium nor a gynoecium. Clarify Question What is the key concept addressed by the question? Gather Content What do you already know about fruit? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Four of the four answers listed below are types
of complex plant tissue. Select the EXCEPTION.
a. sclerenchyma b. phloem c. xylem d. epidermis e. periderm
One advantage to asexual reproduction is that it:
A) enhances genetic variability B) allows individuals in the species to endure long periods of unstable environmental conditions C) results in elimination of harmful mutations from the genome D) enables individuals in the species to rapidly colonize habitats that are favorable to that species E) produces offspring that respond effectively to new pathogens and parasites