In C4 plants, which of the following events of
photosyntesis takes place first?
a. carbon from carbon dioxide is fixed by an
enzyme that does not use oxygen
b. carbon from carbon dioxide is fixed by
rubisco
c. glucose is produced
d. glucose is converted into sucrose
e. RuBP splits into two PGA molecules
A
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Like animals, plants possess circadian rhythm
A. true B. false
What is a hypothesis?
a. a report of the findings of scientific experiments b. a specific conclusion of an experiment in an "if . . . then" format c. a way of using isolated facts to reach a general idea that may explain a phenomenon d. the summary of the outcomes of scientific findings e. a testable explanation of a natural phenomenon
Cladistic analysis of populations of blue wildebeest in Africa has helped to show that habitat fragmentation has led to
a loss of ____. a. evolution b. alleles c. genes d. gene flow e. mutations
Each of the following would inhibit cell progression through the cell cycle except
A) DNA damage during replication. B) kinase phosphorylation of mitotic Cdk. C) APC activity during M phase. D) unphosphorylated Retinoblastoma activity during G1. E) TGF? signaling.