Nitrous oxide is a ________, odorless gas in its natural state

Zero order kinetics results:

A. When there are equal amounts of enzyme and substrate present. B. When there is more enzyme than substrate present. C. When all of the available sites on the enzyme are saturated with substrate. D. When none of the available sites are saturated with substrate.

If Jim's daily calorie requirements are 2200 calories-per-day, and assuming the goal of 60% of his calories should come from carbohydrates, how many calories-per-day should he eat from carbohydrate sources?

A) 880 calories B) 1200 calories C) 2000 calories D) 1320 calories