Question

21 multiple choice 2 points how many atps are produced in the krebs cycle? 4 1 2 3 22 multiple choice 2 points where does the electron transport chain take place? the outer membrane of the mitochondria the cristae of the mitochondria the fluid matrix of the mitochondria the inner membrane of the mitochondria 23 multiple choice 2 points what is the significance of cells in living organisms? cells are only found in plants and not in animals. cells are responsible for performing vital functions in all living organisms. cells are not essential for the survival of living organisms cells are only present in multicellular organisms.

Explanation:

• For question 21: In the Krebs cycle, 1 ATP (or GTP equivalent) is produced per turn of the cycle per acetyl - CoA molecule entering.
• For question 22: The electron transport chain takes place in the inner membrane of the mitochondria. The cristae are the folded structures of the inner membrane that increase the surface area for the electron - transport chain complexes.
• For question 23: Cells are the basic unit of life and are responsible for performing vital functions in all living organisms, whether they are unicellular or multicellular, and in both plants and animals.

Answer:

1. B. 1
2. D. the inner membrane of the mitochondria
3. B. Cells are responsible for performing vital functions in all living organisms.