Which is true about molecules entering a cell? A. Molecules cannot enter a cell because the interior wall is solid.

B. Molecules cannot enter a cell because the interior of the cell is already filled with air.

C. Molecules enter a cell by passing through the cell membrane

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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What is usually (but not always) related to the metabolic processes of living organisms in its organic form?