If two species have incompatible mating structures, then which reproductive isolation mechanism prevents them from
mating?
a. sexual isolation
b. gametic isolation
c. temporal isolation
d. behavioral isolation
e. mechanical isolation
e
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What is a major difference between the extracellular matrix (ECM) of a plant cell and the ECM of an animal cell?
A) Plant ECM is composed primarily of proteins, whereas animal ECM is mainly carbohydrates. B) Plant ECM is primarily carbohydrate in nature, whereas animal ECM is mainly proteins. C) Plant and animal ECMs are quite similar in structure and function. D) ECM components in plant cells are released extracellularly by the Golgi stacks, whereas lysosomes do this in animal cells.
In which cells would you expect to find the highest level of telomerase?
A. muscle cells B. adipose tissue cells C. neurons D. cells that replenish the lining of the gut Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about telomeres and telomerase? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach 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?
The Bacteria and Archaea are the ONLY domains in which organisms exist that can
A) catalyze the transformation of inorganic nitrogen species for biosynthesis. B) assimilate nitrite. C) conserve energy from the transformation of inorganic nitrogen species. D) catalyze the incorporation of inorganic nitrogen species into biomolecules.
Hox complexes in mammals are homologous to invertebrate ______
A. zygotic genes B. segmentation genes C. homeotic genes D. maternal effect genes