Refer to the accompanying figure. What is the process occurring in the cells labeled as 6?
a. fusion
b. mitosis
c. fertilization
d. the first meiotic division
e. the second meiotic division
a
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Why does the number of species on an island level off at S?
A. Because resources become scarce as more species colonize an island. B. Because predation increases as more species colonize an island. C. Because extinction rates increase as more species colonize an island. D. Because colonization rates eventually decrease. E. All of the answer options are correct. F. None of the answer options is correct.
When Calvin injected 14C labeled CO2 into cultures of green algae, what led him to conclude that rubisco adds CO2 to ribulose bisphosphate in the Calvin cycle?
A. Radioactivity appeared last in ribulose bisphosphate. B. Radioactivity first appeared in glucose. C. Radioactivity first appeared in ribulose bisphosphate. D. Radioactivity appeared last in glucose. E. Radioactivity first appeared in 3-phosphoglycerate. F. Radioactivity appeared last in 3-phosphoglycerate
For the bay checkerspot butterfly, a poor flyer, to recolonize small patch habitats, the new habitats must be ____
a. high quality b. low quality c. close to a source population d. far from a source population e. above a certain number of individuals
Humans are more related to fungi than to plants
Indicate whether the statement is true or false