All of the following are chemical mutations EXCEPT
A. nitrogen mustard.
B. X-rays.
C. ethyl methanesulfonate.
D. hydroxylamine.
E. nitrous acid.
B. X-rays.
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A researcher determined that a strain of E. coli is producing a shortened version of a protein required for glucose metabolism. What type of mutation could be responsible for this shorter than normal protein?
A. nonsense mutation B. missense mutation C. silent mutation D. sense mutation E. frameshift mutation
_____ is the physician first associated with vaccination.
a. Edward Jenner b. Louis Pasteur c. Alexander Fleming d. Robert Koch e. Joseph Lister
Discuss the role of turgor in the crisp lettuce purchased at the grocery store looking much limper by
the time it gets home. What will be an ideal response?
Secondary succession occurs
a. after a fire. b. on a new sand dune. c. on bare rock. d. immediately after the formation of a man-made lake. e. on a newly-formed volcanic island.