The change in the chromosome depicted between the top and the bottom in the accompanying figure represents a(n)
____.
a. inversion
b. duplication
c. reciprocal translocation
d. deletion
e. Philadelphia chromosome
ANSWER: b
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Answer the following statements true (T) or false (F)
1. There could be as many as 100 trillion microorganisms that live on us and in us. 2. The most common organisms in the indigenous microflora of the mouth are various species of b-hemolytic streptococci. 3. Microbes cause thousands of different types of plant diseases. 4. Most relationships between humans and microbes are beneficial rather than harmful. 5. Beneficial microorganisms far outnumber harmful ones.
Choose the proper item below for statements 60–63
a. Thomas Brock b. Stanley Miller c. Jeon Kwang d. Lynn Margulis e. Australian researcher(s) M 60. He/she is a major proponent of endosymbiosis. E 61. He/she very early provided experimental evidence for endosymbiosis. D 62. He/she discovered an organism that contains a heatresistant enzyme. D 63. He/she conducted the first primitive atmosphere simulation experiment.
Formation of urine involves filtration, reabsorption and secretion, all of which are done by the bladder.
a. true b. false
Which of the following DNA sequences would most likely be recognized by a restriction enzyme? (Note: Only the coding strand is shown.)
A: AGTCGA B: GTCTGA C: TAAGGT D: TCGTGGA E: TAGCTA