The following are true of insulin except.. Glycopeptide

The following are true of insulin except:

• a- Glycopeptide***
• b- Secreted by beta cells
• c- Causes lipogenesis
• d- Promotes glycogenesis.

The correct answer is a) Glycopeptide.

b) Secreted by beta cells:

This is true. Insulin is primarily secreted by beta cells of the pancreatic islets.

c) Causes lipogenesis:

This is partially true. While insulin does stimulate some lipogenesis (fat storage) in adipose tissue, its primary effect is inhibiting lipolysis (fat breakdown).

d) Promotes glycogenesis:

This is true. Insulin plays a crucial role in promoting the uptake of glucose by cells and its conversion into glycogen for storage, especially in the liver and skeletal muscles.

Therefore, insulin is not a glycopeptide.  It is a peptide hormone, composed only of amino acids, not carbohydrates.

Additional information:

• Some medications used to treat diabetes, such as GLP-1 agonists, are categorized as glycopeptides. However, these are distinct from insulin in structure and function.
• While insulin indirectly influences fat metabolism, its main focus is regulating blood sugar levels through promoting glucose uptake and storage.