Structures and compounds involved in respiration in anaerobic conditions include: A – pyruvate B - reduced NAD C - ethanol D - carbon dioxide E - cytoplasm F - NAD G - ethanal H - lactate I - oxygen J - mitochondrion Complete Table 7.1 by matching each description with one letter chosen from A to J to show the correct structure or compound. You may use each letter once, more than once or not at all. Table 7.1 description letter end product of glycolysis cellular location of respiration in anaerobic conditions end product of respiration in anaerobic conditions in yeast cells compound used to reduce pyruvate end product of respiration in anaerobic conditions in muscle cells gas released during alcoholic fermentation

1. (a)Complete Table 7.1 by matching each description with one letter chosen from A to J to show the correct structure or compound. You may use each letter once, more than once or not at all. Table 7.1 description letter end product of glycolysis cellular location of respiration in anaerobic conditions end product of respiration in anaerobic conditions in yeast cells compound used to reduce pyruvate end product of respiration in anaerobic conditions in muscle cells gas released during alcoholic fermentation[6]
2. (b)Respiration in anaerobic conditions in muscle cells during vigorous exercise can create an oxygen debt. Extra oxygen is breathed in after exercise to pay back the oxygen debt. Explain two ways in which the mammalian body uses this extra oxygen.[2]