When house plants grow toward a window they demonstrate the ability of living organisms to respond to their environment
a. true
b. false
Answer: a. true
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Which of the following is an overgrowth of cells that serves no useful purpose?
A. tumor B. oncogene C. protooncogene D. growth E. callus
External cues such as increasing day length or warming after a cold snap stimulate gibberellin
synthesis, which results in bolting in plants such as cabbages.
Indicate whether the statement is true or false.All steroids have
a. the same number of double bonds. b. one or more fatty acids. c. four rings of carbon to which other atoms are attached. d. the same functional groups. e. the same number and positions of double bonds.
The restriction enzyme BamHI recognizes the DNA sequence GGATCC and always cuts between the two G nucleotides. How many bases long is the sticky end of a DNA molecule that has been cut with BamHI?
A) two B) three C) four D) five