During the second set of photosynthetic reactions, called the Calvin cycle, all BUT ONE of the following occurs.

Responses
A Glucose is the end product of the Calvin cycle.Glucose is the end product of the Calvin cycle.
B By-products of the Calvin cycle include water vapor and oxygen.By-products of the Calvin cycle include water vapor and oxygen.
C Carbon dioxide, a reactant of photosynthesis, is utilized during the Calvin cycle.Carbon dioxide, a reactant of photosynthesis, is utilized during the Calvin cycle.
D ATP and NADPH, high energy molecules, are utilized to produce stored chemical energy.

B By-products of the Calvin cycle include water vapor and oxygen.

B By-products of the Calvin cycle include water vapor and oxygen.

To determine which of the options is NOT a part of the Calvin cycle during the second set of photosynthetic reactions, you would need to understand the concept of the Calvin cycle.

The Calvin cycle is the part of photosynthesis that occurs in the stroma of the chloroplasts. It is a series of biochemical reactions that convert carbon dioxide and other compounds into glucose. The cycle involves several steps and utilizes energy molecules such as ATP and NADPH, which are produced in the light-dependent reactions.

Let's examine each option to determine which one does not occur during the Calvin cycle:

A) Glucose is the end product of the Calvin cycle.
This statement is true. The main end product of the Calvin cycle is glucose, a sugar molecule that serves as a source of energy for the plant.

B) By-products of the Calvin cycle include water vapor and oxygen.
This statement is false. The by-products of the Calvin cycle do not include water vapor and oxygen. Water vapor is produced in the process of transpiration, which occurs independently of the Calvin cycle. Oxygen is a by-product of the light-dependent reactions, not the Calvin cycle.

C) Carbon dioxide, a reactant of photosynthesis, is utilized during the Calvin cycle.
This statement is true. Carbon dioxide is a reactant that is utilized during the Calvin cycle to produce glucose.

D) ATP and NADPH, high-energy molecules, are utilized to produce stored chemical energy.
This statement is true. In the Calvin cycle, ATP and NADPH, which are generated in the light-dependent reactions, are used to power the conversion of carbon dioxide into glucose, which is a stored form of chemical energy.

Based on our analysis, the answer is B) By-products of the Calvin cycle include water vapor and oxygen.