Katie will use the black, red and purple balls in a ratio 1:2:1 for carbohydrate molecules.
There are four macro molecules in existence, these are carbohydrates, proteins, fat and oil and nucleic acids. All these molecules has carbon in their compounds. The carbohydrate is made up of the elements carbon, hydrogen and oxygen in the ratio 1: 2: 1, thus, the molecular formula of carbohydrate is C6H12O6.
The correct answer is:
Net Input: NADH, ADP, O₂
Net Output: NAD⁺, ATP, and H2O
Not Input or Output: Pyruvate, Glucose, Acetyl CoA, Coenzyme A and CO₂.
NADH together with FADH2 are reduced electron carriers that transfer their electrons and turn back into NAD+ and FAD.
Electrons are transferred to O2 and H2O is produced.
ADP can be described as precursor for ATP synthesis, since it receives phosphate group for the formation of ATP. This process is possible thanks to H ions gradient and enzyme ATP synthase.