A couple conceives a child on January 1st. Which day falls within the period of somitogenesis?
A. January 31st
B. January 17th
C. January 7th
D. January 3rd
Answer: B
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In photosynthesis, ATP is made by
A. chemiosmosis. B. glycolysis. C. the Krebs cycle. D. the Calvin cycle. E. the passing of electrons from photosystem I to an electron transport chain.
Consider the characteristics of biomes. Would you expect more biomass in a trophic pyramid from the tropical rainforest compared to one from the taiga?
A. Yes, because there is higher productivity at the equator than at the poles. B. Yes, because there is higher fungal diversity cycling carbon at the equator than at the poles. C. Yes, because there are higher numbers of predators at the equator than at the poles. D. No, because there are photosynthetic organisms in both biomes that support the trophic pyramids. E. No, because there are other producers at the poles that don't require sunlight so make up the difference in biomass that would be there if only sunlight was used as an energy source.
The long-term chemical energy storage molecules in plants are steroids.
Answer the following statement true (T) or false (F)
Which association of structure and function is incorrect?
A. amnion - blood vessels B. chorion - gas exchange C. allantois - waste storage D. yolk sac - food storage