A Solution of 62

question 189

Multiple Choice

A solution of 62.4 g of insulin in enough water to make 1.000 L of solution has an osmotic pressure of 0.305 atm at 25°C.Based on these data,what is the molar mass of insulin?

• A)621 g/mol
• B)5000 g/mol
• C)7570 g/mol
• D)71,900 g/mol

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Definitions:

Endocrine Gland

Ductless gland; aggregation of hormone-secreting epithelial cells with associated connective tissue and blood vessels.

Pancreas

A glandular organ in the digestive and endocrine systems of vertebrates that produces enzymes for digestion and hormones such as insulin for blood sugar regulation.

Anterior Pituitary

The front portion of the pituitary gland, producing and secreting various hormones that regulate several physiological processes including growth, reproduction, and metabolism.

Hypothalamus

A region of the brain responsible for the regulation of certain metabolic processes and other activities of the autonomic nervous system, including temperature control, hunger, and thirst.