Which Trophic Level Forms the Base of a Food Chain

question 70

Multiple Choice

Which trophic level forms the base of a food chain?

• A)Primary producers
• B)Quaternary consumers
• C)Tertiary consumers
• D)Secondary consumers
• E)Primary consumers

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Definitions:

Membrane Potential

The electrical potential difference across a cell's plasma membrane, caused by the differential distribution of ions, crucial for functions such as nerve impulse transmission.

Sodium-potassium Pumps

Biological mechanism involving the active transport of sodium and potassium ions across cell membranes, essential for various cellular processes.

Charges

Financial or legal responsibilities, or in physics, the property of matter that causes it to experience a force when placed in an electromagnetic field.

Phospholipids

A class of lipids forming the major component of cell membranes, consisting of two fatty acids, glycerol, and a phosphate group.