Hybridization requires a nucleic acid probe that binds to DNA or RNA of interest, which must be in the ________ form for hybridization to occur
A) single-stranded
B) double-stranded
C) oligomerized
D) polymerized
Answer: A
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Some anoxygenic photosynthetic bacteria use ________ as their electron source.
A. sulfur B. hydrogen C. hydrogen sulfide D. All of these choices are correct.
During telophase I, ____
a. chromosomes condense b. chromosomes align along the equatorial plane of the cell c. nuclear envelopes form in some species but not in others d. homologous chromosomes separate e. tetrads form
Matching: Match the definition with the word.1) monotrichous2) peritrichous3) lophotrichous4) amphitrichousa. a single flagellumb. a single flagellum at each pole of an organismc. a cluster of flagella at one or both ends of an organismd. a relatively even distribution of flagella over the entire surface of the bacterium
Fill in the blank(s) with the appropriate word(s).
Which of the following membranes of the amniotic egg assists in gas exchange?
a. yolk sac b. chorion c. amnion d. allantois