Question

multiple choice question

the krebs cycle occurs in the ____ of eukaryotic cells and the ____ of bacteria.

cytoplasm; cytoplasm
cytoplasm; mitochondrion
mitochondrion; cytoplasm

Explanation:

Identify eukaryotic site of the Krebs cycle

In eukaryotic cells, the Krebs cycle (citric acid cycle) takes place within the mitochondrial matrix (often referred to generally as the mitochondrion).

Identify prokaryotic site of the Krebs cycle

In bacteria (prokaryotes), which lack membrane-bound organelles like mitochondria, the enzymes for the Krebs cycle are located in the cytoplasm.

Match with the correct multiple-choice option

The correct sequence to fill in the blanks is "mitochondrion; cytoplasm".

Answer:

• cytoplasm; cytoplasm
• cytoplasm; mitochondrion
• mitochondrion; cytoplasm (Correct answer)