Which of the following statements about insulin is incorrect?

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It is produced by beta cells in the pancreasIt is a glycoproteinIt stimulates fat synthesisIt encourages glycogen formationIt regulates blood glucose levels

Explanation

Insulin is secreted by pancreatic beta cells and plays a key role in promoting lipogenesis and glycogenesis. However, it is a peptide hormone, not a glycoprotein, making the statement that it is a glycopeptide incorrect.