19.
15. During respiration, the energy within the bonds
of a glucose molecule is released in small amounts
in a step-by-step, enzyme-controlled reaction. In
this process, the energy released is used to
(1) synthesize ATP
(2) control the process of diffusion
(3) synthesize more glucose
(4) produce oxygen molecules

Calvin ate a candy bar, which caused his body's blood glucose levels to become unbalanced. his body responded by initiating a feedback mechanism to return his body to homeostasis. place the steps of this feedback mechanism in order, starting with the blood glucose imbalance that occurred after calvin consumed the candy bar. a) calvin's blood glucose levels decreased. b) calvin's pancreas stopped secreting insulin. c) calvin's body cells started to take up glucose and store it as glycogen. d) calvin's blood glucose levels increased. e) calvin's pancreas started secreting insulin.

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