Each amino acid is encoded by only one mRNA codon
a. True
b. False
Indicate whether the statement is true or false
False
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When phytochromes mediate plant responses to shading they could cause:
A. leaves to fall off B. leaves to turn towards the light C. no influence on leaves D. extension of shade leaves into the light E. leaves to turn brown
Which statement best summarizes the connection between islands and species richness?
a. The factor influencing species richness on an island is distance from the mainland. b. The factor influencing species richness on an island is island size. c. The factor influencing species richness on an island is the type of species on the island. d. The factors influencing species richness on an island are distance from the mainland and island size. e. The factors influencing species richness on an island are distance from the mainland and type of species on the island.
If the rate of photosynthesis stops increasing, at what concentration of CO2 does it stop increasing?
a. between 100 and 300 ppm b. between 300 and 500 ppm c. between 500 and 700 ppm d. between 700 and 900 ppm
Which of the following can be changed based on
new evidence? a. hypothesis b. theory c. prediction d. experiment e. all of these