Epiphytes are most closely associated with
Select one:
a. tropical rain forests.
b. tundra.
c. deserts.
d. deciduous forests.
e. temperate deciduous forests.
a. tropical rain forests.
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When we watch Olympic athletes perform, we are admiring the expert control of which systems working together?
A. skeletal, endocrine, and circulatory systems B. nervous, circulatory, and skeletal systems C. muscular, integumentary, and circulatory systems D. nervous, muscular, and skeletal systems Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about movement? 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?
If a child more strongly resembles one parent's
physical traits than the other parent's, the explanation could be due to chromosome movements during a. anaphase II. b. metaphase II. c. prophase II. d. anaphase I. e. telophase I
The circles in “B” are
a. fragments of the main bacterial DNA. b. plasmids. c. cDNA molecules. d. DNA templates. e. none of these.
Which of the following is a proposed hypothesis for the origin of genetic information?
a. Early DNA molecules coded for RNA, which then catalyzed the production of proteins. b. Early polypeptides were the first "genes," followed by RNA and then DNA. c. As protocells grew and split, they distributed copies of their molecules to their offspring. d. Early RNA molecules coded for the order of amino acids in a polypeptide. e. Short RNA strands were capable of self-replication and evolved by natural selection.