Auxotroph bacteria
a. are mutant bacteria
b. can grow on minimal media
c. feed on proteins
d. make their own nutrients
e. make antibiotics
A
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The epsilon (?) subunit of DNA polymerase III of E. coli has exonuclease activity. How does it function in the proofreading process? The epsilon subunit _____
A) removes a mismatched nucleotide B) excises a segment of DNA around the mismatched base C) can recognize which strand is the template or parent strand and which is the new strand of DNA. D) adds nucleotide triphosphates to the end of the growing DNA strand
Which of the following is true about telomeres and immortality?
A. Immortal cell lines lack telomeres. B. Immortal cell lines lack telomerase. C. Reactivation of telomerase in humans will cause them to become immortal. D. Tumor cell lines can be immortal if their telomerase gene is reactivated. E. Immortal cell lines have telomerase activity but cannot form t-loops and don't have protective proteins to prevent recombination repair.
The hominid australopithecines are generally accepted to be different from modern humans because
A. only humans are bipedal. B. the human skull is apelike in appearance with a strongly projecting face. C. human brains on an average are at least twice as large in size. D. human arms are longer than legs. E. only humans are meat-eaters.
The chaparral biome is characterized by grasses as high as 2 meters
____________________ Indicate whether the statement is true or false.