Pancreatic beta cells secrete the protein hormone insulin in response to various signals. Which of the following is/are true of these cells? a) They would have high concentration of insulin stored in membrane-bound vesicles adjacent to the plasma membrane. b) They would contain more mitochondria than an average celI. c) They participate in regulated secretion. d) a and c e) a, b and c

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Defense Mechanism

Circumstances influence and compel people to behave in a certain way. One such behavior is a defense mechanism. It is employed by people to escape from unpleasant circumstances, thoughts and actions. Defense mechanisms are, thus, psychological strategies that help to avert and avoid unwanted feelings such as guilt or shame and situations such as threat and danger.