Chapter 11, Problem 4RA

Which of these statements about the hormone insulin is true?

$\begin{array}{l}\text{a}\text{. It is secreted by alpha cells in the pancreatic islets}\text{.}\hfill \\ \text{b}\text{. It is secreted in response to a rise in blood glucose}\text{.}\hfill \\ \text{c}\text{. It stimulates the production of glycogen and fat}\text{.}\hfill \\ \text{d}\text{. Both }a\text{ and }b\text{ are true}\text{.}\hfill \\ \text{e}\text{. Both }b\text{ and }c\text{ are true}\text{.}\hfill \end{array}$