A Certain Nucleus Containing 8 Protons and 7 Neutrons Has

question 22

Multiple Choice

A certain nucleus containing 8 protons and 7 neutrons has a density ρ.Which of the following values would be closest to the expected value of the density of a nucleus having 51 protons and 69 neutrons?

• A) 1.00 ρ
• B) 1.85 ρ
• C) 2.00 ρ
• D) 2.14 ρ
• E) 8.00 ρ

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Definitions:

Loop of Henle

The U-shaped loop of a mammalian kidney tubule that extends down into the renal medulla.

Sodium

A chemical element (Na) that is essential for human health, notably in the regulation of fluids and blood pressure.

ADH

Antidiuretic Hormone, also known as vasopressin; a hormone released by the pituitary gland that regulates water balance in the body by reducing urine output.

Collecting Duct

Part of the nephron in the kidney that is responsible for the concentration of urine and the reabsorption of water into the bloodstream.