Question

now that you have an overview of the key steps in cellular respiration, lets visualize where in a eukaryotic cell all of this happens. cellular respiration is a process that intimately involves the mitochondrion. remember that mitochondria are organelles with two membranes—an outer membrane and an inner membrane that forms a system of tubules and flattened sacs. (note that while prokaryotes dont have mitochondria, they still do cellular respiration. but thats a story for another day.)
consider the details you just learned about the steps involved in cellular respiration. which statements accurately describe where different molecules are located throughout the process? select all that apply.
□ glucose begins being broken down in the cytoplasm.
□ co₂ (carbon dioxide) is produced in the space between the two mitochondrial membranes during the citric acid cycle.
□ the nadh that forms during pyruvate processing is inside the inner mitochondrial membrane.
after glycolysis, pyruvate processing, and the citric acid cycle, the electron transport chain (etc) is the star of the show. the etc is a collection of multiple proteins arranged into four complexes that are embedded in the inner
did you fully understand the concept covered in this section?

Explanation:

• Glucose breakdown: Glycolysis (first step of cellular respiration where glucose is broken down) occurs in the cytoplasm. So, the statement "Glucose begins being broken down in the cytoplasm" is correct.
• \(CO_2\) production: The citric acid cycle occurs in the mitochondrial matrix (not the space between the two mitochondrial membranes). \(CO_2\) is produced in the mitochondrial matrix during the citric acid cycle. So, the statement "\(CO_2\) (carbon dioxide) is produced in the space between the two mitochondrial membranes during the citric acid cycle" is incorrect.
• NADH location: Pyruvate processing occurs in the mitochondrial matrix (inside the inner mitochondrial membrane). NADH (a product of pyruvate processing) is also in the mitochondrial matrix (inside the inner mitochondrial membrane). So, the statement "The NADH that forms during pyruvate processing is inside the inner mitochondrial membrane" is correct.

Answer:

• Glucose begins being broken down in the cytoplasm.
• The NADH that forms during pyruvate processing is inside the inner mitochondrial membrane.