Four of the five answers listed below are
characteristics of ethylene. Select the
EXCEPTION.
a. a source is aging plant tissues
b. promotes fruit ripening
c. triggers cells division
d. is a gas
e. inhibits cell elongation
E
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Research suggests that contamination of water by agricultural chemicals appears to____
a. increase sperm count b. decrease sperm count c. increase sperm motility d. eliminate sperm production completely e. have no effect on sperm
Calculate L1, given n1 = 100, n2 = 50, and n3 = 10
A) 90 B) 50 C) 75 D) 10
Flowering can be regulated by light, temperature, gibberellin levels, or internal factors. What do all of these different flowering pathways have in common?
A. All four pathways result in a decrease in CONSTANS (CO) expression, which induces flowering. B. All four pathways result in an increase in CONSTANS (CO) expression, which induces flowering. C. All four pathways result in a decrease in LEAFY (LFY) expression, which induces flowering. D. All four pathways result in an increase in LEAFY (LFY) expression, which induces flowering.
Sanger sequencing is based on the order in which ddNTPs are added to a growing polynucleotide. Why are ddNTPs integral to the Sanger sequencing method?
A) They have a 2? hydroxyl that allows for extension of the polynucleotide. B) They do not have a 2? hydroxyl, which does not allow the extension of the polynucleotide. C) They do not have a 3? hydroxyl, which does not allow the extension of the polynucleotide. D) They have a 3? hydroxyl that allows for extension of the polynucleotide.