The occurrence of geographic isolation between two populations will ultimately lead to:
a. sexual dimorphism.
b. allopatric speciation.
c. morphological similarity.
d. sympatric speciation.
e. sexual selection.
B
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Abscisic acid synthesized in the root travels to different parts of the shoot where it regulates transpirational water loss. What is the most likely way that ABA travels from the root to the various locations within the shoot?
A. vessels and tracheids B. sieve tubes C. between cell walls D. from cell to cell through the plasmodesmata Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about transportation of materials within a plant? How does it relate to the question? 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?
What molecule is required for activation of a rho protein?
What will be an ideal response?
In the late 1970s Woese argued that there are two fundamentally different groups of prokaryotes by demonstrating:a
different DNA sequences in prokaryotes. b. some prokaryotes carry on photosynthesis. c. the difference in the appearance of the nuclei. d. gene codes of ribosomal RNA of different bacteria. e. some prokaryotes produce methane while others do not.
Are organisms that cannot synthesize their own food and rely on other organisms — both plants and animals — for nutrition.
a. heterotrophs b. autotrophs