Please match the types of mutations with the statements that most accurately describe them, to test your understanding of their causes.
Induced mutation
A) Random change in the DNA arising from errors in replication that occur without a known cause
B) Result from exposure to known mutagens, which are primarily physical or chemical agents that damage DNA
C) Changing of single base in the DNA code that may result in the placement of a different amino acid
D) Addition or deletion of bases that changes the reading of mRNA codons
B) Result from exposure to known mutagens, which are primarily physical or chemical agents that damage DNA
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A neutral solution has a pH of
(a) 3. (b) 5. (c) 7. (d) 9.
After ten years of hard work and intensive study, you complete your PhD in botany. Your dissertation is celebrated in your field, and your adviser informs you that you can choose any plant in the world to continue your research. Without hesitation, you choose one of the strangest plants on the planet, the Welwitschia! But this rare species, the singular in its genus, can be found in only one place. Where must you travel to research this bizarre and fascinating plant?
a. Siberia b. New Guinea c. Namib d. Tibet
Most of an herbaceous plant body consists of
a. ground tissue. b. phloem. c. vascular tissue. d. sclerenchyma. e. xylem.
Which of the following pairs is MISMATCHED?
A) coliform Enterobacteriaceae; rapid lactose fermenters B) noncoliform opportunistic Enterobacteriaceae; Proteus, Morganella C) coliform Enterobacteriaceae; opportunistic pathogens D) nonpathogenic Enterobacteriaceae; Salmonella, Shigella E) noncoliform Enterobacteriaceae; non-lactose-fermenters