A Dietitian Designs a Special Diet Supplement Using Two Different

question 8

Multiple Choice

A dietitian designs a special diet supplement using two different foods.Each ounce of food X contains 10 units of calcium, 15 units of iron, and 20 units of vitamin B.Each ounce of food Y contains 15 units of calcium, 10 units of iron, and 20 units of vitamin B.The minimum daily requirements for the diet are 380 units of calcium, 240 units of iron, and 390 units of vitamin B.Which combinations of foods X and Y below, if any, can be given to the patient to meet the minimum daily requirements? Combination I :
21 ounces of food X and 22 ounces of food Y
Combination II :
16 ounces of food X and 19 ounces of food Y
Combination III :
10 ounces of food X and 10 ounces of food Y

• A) Only combinations II and III meet the minimum daily requirement.
• B) Only combination II meets the minimum daily requirement.
• C) None of the combinations meet the minimum daily requirement.
• D) Only combinations I and II meet the minimum daily requirement.
• E) Only combination III meets the minimum daily requirement.

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Definitions:

Resting Membrane Potential

The voltage difference across a cell's plasma membrane in the absence of stimulation, crucial for the transmission of nerve impulses.

Cardiac Muscle Cells

Specialized muscle cells in the heart that contract to pump blood throughout the body; also known as cardiomyocytes.

Voltage-Gated Channels

Protein channels that open or close in response to changes in the membrane potential.

Na+ Channels

Protein pores in the membranes of cells that allow the passage of sodium ions (Na+) into or out of the cell, crucial for the initiation and propagation of electrical signals in neurons and muscle cells.