Question

examine the model for two cellular organelles found in many eukaryotic cells. which molecule(s) could be represented by the circle labeled z that is produced as an output of the mitochondria and required by the chloroplast? select all that apply.
a letter z could be carbon dioxide because it is produced in cellular respiration and is a reactant of photosynthesis.
b letter z could be a water molecule because it is produced in cellular respiration and is a reactant of photosynthesis.
c letter z could be a water molecule because it is produced in photosynthesis and is a reactant of cellular respiration.
d letter z could be a glucose molecule because it is produced in photosynthesis and is a reactant of cellular respiration.
e letter z could be an oxygen molecule because it is produced in cellular respiration and is a reactant of photosynthesis.

Explanation:

• Cellular Respiration: Mitochondria are the sites of cellular respiration. The general equation for cellular respiration is \(C_6H_{12}O_6+6O_2

ightarrow6CO_2 + 6H_2O+\text{Energy}\). So, carbon dioxide (\(CO_2\)) and water (\(H_2O\)) are produced as by - products in cellular respiration.

• Photosynthesis: Chloroplasts are the sites of photosynthesis. The general equation for photosynthesis is \(6CO_2+6H_2O+\text{Light Energy}

ightarrow C_6H_{12}O_6 + 6O_2\). So, carbon dioxide (\(CO_2\)) and water (\(H_2O\)) are reactants in photosynthesis.

• Option A: Carbon dioxide (\(CO_2\)) is produced in cellular respiration (in mitochondria) and is a reactant in photosynthesis (in chloroplasts). This is correct.
• Option B: Water (\(H_2O\)) is produced in cellular respiration (in mitochondria) and is a reactant in photosynthesis (in chloroplasts). This is correct.
• Option C: Water is not produced in photosynthesis (it is a reactant in the light - dependent reactions, but the net equation shows it as a reactant). So, this option is incorrect.
• Option D: Glucose (\(C_6H_{12}O_6\)) is produced in photosynthesis, but it is not a reactant in the process that occurs in the mitochondria (cellular respiration uses glucose as a reactant, but the question asks for a molecule produced by mitochondria and used by chloroplasts). So, this option is incorrect.
• Option E: Oxygen (\(O_2\)) is produced in photosynthesis, not in cellular respiration. So, this option is incorrect.

Answer:

A. Letter Z could be carbon dioxide because it is produced in cellular respiration and is a reactant of photosynthesis.
B. Letter Z could be a water molecule because it is produced in cellular respiration and is a reactant of photosynthesis.