Which of the following is required for amplification of DNAby cloning but not for PCR?
A: A vector
B: DNA Polymerase
C: Nucleotides
D: All of the above
Answer: A: A vector
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Streptomyces
A. may produce antibiotics. B. may produce geosmins. C. will swarm together to form fruiting bodies. D. are typically found in the soil. E. may produce antibiotics, may produce geosmins AND are typically found in the soil.
Why is the evolutionary origin of all eukaryotes no longer considered to be a simple evolution from a single Archaea species?
a. Archaea contain insufficient genetic material to explain eukaryotic evolution. b. Fossil records provide evidence that Archaea evolved after eukaryotes. c. Some eukaryotic genes share more similarity with Bacteria than Archaea. d. Some eukaryotes contain mitochondria, which are invariably fatal to Archaea.
Cells grown in culture, outside the body are called ____ cell.s They have become an essential tool of cell and molecular biologists
A) in vitro B) in vivo C) live D) in culturo E) vivacious
Which of the following is not a floral structure?
A. Endosperm B. Stigma C. Style D. Calyx E. Corolla