Which of the following best indicates that the light reactions of photosynthesis have completed and that the calvin cycle has begun A) Electrons are transferred across the electron transport chain (ETC)on the thylakoid membrane.
B) ATP and NADPH accumulate in the stroma
C) An electrochemical gradient forms across the thylakoid membrane.
D) A high concentration of carbohydrates is found in the thylakoid lumen.

Me with these questions if you’re it sure don’t answer

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.