Photosynthesis spread through eukaryotes by repeated endosymbiosis involving eukaryotic algae
A. true
B. false
A
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Methylation of DNA bases is one way that regulatory transcription factors may influence gene expression
Indicate whether the statement is true or false
Adaptations of mosses for life on land include
_____ delayed meiosis. _____ wind dispersal of gametes. _____ wind dispersal of spores. _____ enclosure of zygotes in the gametophyte. _____ enclosure of gametes in gametangia.
A person with swollen gums rinses his mouth with warm salt water, and the swelling decreases. Which of the following has occurred?
A. The swollen gums have absorbed the saltwater solution. B. The saltwater solution lowers the temperature of the water in the gums. C. The salt in the solution has moved against the concentration gradient. D. The water in the gums has moved out due to the high concentration of salt in the solution.
When a population grows according to a logistic model, at what size is its growth rate maximal?
A) N = K B) N = K/2 C) N = r_0 D) N = infinite