What molecule delivers the acetyl group derived from the pyruvate produced in glycolysis to the citric acid cycle?

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.

Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.