This stage of cellular respiration ends with two atp molecules and two nadh molecules. a. krebs cycle b. electron transport chain c. calvin cycle d. glycolysis

D. Glycolysis

Explanation:

In glycolysis, energy is required to break a molecule of glucose into two pyruvate molecules. These two pyruvate molecules are used during pyruvate oxidation; which is stage II of cellular respiration.

During glycolysis, two molecules of ATP are used and four molecules of ATP are produced. So there is a net gain of two ATP molecules. Hydrolysis of a glucose molecule produces high energy electrons which are used to reduce two NAD+ molecules to NADH.

These two molecules are used in the citric acid cycle to produce more ATP molecules.

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance