How many carbon fixation reactions make up the Calvin cycle?
a. 2
b. 3
c. 5
d. 10
e. 13
e
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Clover will flower if exposed to 8 hours of dark and 16 hours of light. It will not flower if exposed to 16 hours of dark and 8 hours of light. However, if the 16 hours of dark is interrupted with a brief period of light, the clover will flower. Which of the following will trigger clover to flower?
A. None of the answer choices is correct. B. short light periods C. long dark periods D. short dark periods E. long light periods
If the connective tissue in the ventricles, called ________, gives way, blood may go backward through the AV valves
Fill in the blank(s) with correct word
When e-cadherin expression ___ this increases invasiveness of tumor cells.
a. increased b. decreased c. stays the same d. none of the above
Which of the following statements best discriminates among phylogenetic trees based on a maximum likelihood approach?
A. The preferred tree requires the most mutations to occur. B. The preferred tree gives the lowest probability of producing the observed data. C. The preferred tree requires the fewest mutations to occur. D. The preferred tree gives the highest probability of producing the observed data.