Hummingbirds break down glucose and other food molecules during cellular respiration. The carbon atoms in these organic molecules are released as ____________during the _____________.

Question

Quizplus · Accepted Answer

During the Krebs cycle, glucose is broken down and the carbon atoms are released as carbon dioxide. The electron transport chain takes place after the Krebs cycle and is responsible for transferring electrons to oxygen to produce ATP. Choice A is incorrect because glucose is broken down during glycolysis and the Krebs cycle. Choice B is incorrect because methane is not a product of cellular respiration. Choice C is partially correct, as carbon dioxide is released during the electron transport chain, but it is not a product of the Krebs cycle. Choice E is incorrect because glycolysis only breaks down glucose and does not produce carbon dioxide.

Hummingbirds Break Down Glucose and Other Food Molecules During Cellular