​What Is the Current Status of the World Food Supplies

question 41

Multiple Choice

​What is the current status of the world food supplies?

• A)Increased flooding is providing useful irrigation that improves crop yields.
• B)There is adequate food because the world population has stabilized.
• C)​The world's supplies of fresh water are dwindling and becoming polluted.
• D)​There is an increase in the number of ocean fish available.
• E)​Today's total world food supply cannot feed the entire current population.

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Definitions:

Plasma Membrane

The semipermeable membrane surrounding the cytoplasm of a cell, composed of a phospholipid bilayer with embedded proteins.

Concentration Differences

Variations in the amount of a particular substance within a given volume, leading to a gradient that can cause diffusion.

Sodium-Potassium Pump

A membrane-bound ATPase enzyme that pumps sodium out of cells while moving potassium into cells, crucial for maintaining cellular ion balance and membrane potential.

Plasma Membrane

A bi-layer of lipids and proteins that surrounds a cell, controlling the passage of substances in and out of the cell.