Locate glycolysis in the cytoplasm, track substrate-level ATP and reduced NAD, then explain pyruvate reduction to lactate and NAD regeneration without oxygen using marked questions.
Animals use aerobic and anaerobic respiration to produce ATP.
The photograph shows a crocodile (Crocodylus porosus) that lives in saltwater habitats.
An investigation measured the lactate production rate of these crocodiles when they were active.
The graph shows the results of this investigation.
Lactate production rate
Each plotted point on the graph represents a single crocodile.
Discuss the roles of the different types of respiration in these active crocodiles.
Use the information in the graph and your own knowledge to support your answer.