Five Statements About Modern Cells Are Given

question 133

Multiple Choice

Five statements about modern cells are given.Which statement is consistent with the claim that catalysts were likely important during the earliest history of life when the first cells were emerging?

• A) Every metabolic reaction in a cell has a corresponding enzyme without which the cell cannot function.
• B) A cell takes in matter to serve as building blocks for the macromolecules it constructs to form its various structures.
• C) Chemical bond energy present in molecules taken in by a cell serves as a source of energy for the cell.
• D) Cells are separated from their external environment by a semipermeable membrane that helps regulate which matter enters or leaves the cell.
• E) When a cell dies, the chemical changes taking place in the cell's interior come to a complete stop.

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Definitions:

Variable Cost

Costs that change in proportion to the level of output in the production process.

Marginal Product

The marginal product is the additional output produced as a result of using one more unit of a particular input, holding all other inputs constant.

Average Variable Cost

The total variable costs divided by the quantity of output produced, indicating the variable cost per unit of output.

Average Fixed Cost

Average fixed cost is the fixed cost per unit of output, calculated by dividing total fixed costs by the number of units produced, which decreases as production increases.