Which of the following metabolic conversions involved in glucose synthesis requires the direct expenditure of atp?
a. 3-phosphoglycerate --> 1,3-bisphosphoglycerate
b. glyceraldehyde-3-phosphate + dihydroxyacetone phosphate --> fructose-1,6-bisphosphate
c. fructose-1,6-bisphosphate --> fructose-6-phosphate
d. 1,3-bisphosphoglycerate --> glyceraldehyde-3-phosphate

(! ) what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species

Imagine that certain laws of physics could be ignored and you were able to travel vast distances in moments. now imagine that you traveled to an earth-like planet located light-years away that is known to support life. think about what you’ve learned in this unit and make an argument for what you think would be the dominant type of life form on this planet. consider whether a notochord is required for an organism to manipulate its environment and become a dominant creature.