What happens during the Krebs Cycle? A. ATP and NADH from food are converted to CO₂ and O₂
B. NADH from glycolysis is converted to ATP and O₂ molecules
C. Glucose is broken down in a cycle of reactions to form pyruvate
D. Pyruvate is broken down in a series of reactions to form CO₂

Glucose is broken down in different ways, both in the presence and in the absence of oxygen. using the table for reference, what major products are formed in each reaction set?

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.

Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because