The Plasma Membrane of a Cell and the Membrane Boundaries

question 52

Multiple Choice

The plasma membrane of a cell and the membrane boundaries of organelles,such as mitochondria and chloroplasts,serve similar functions.What is one of the main functions of the membranes of both cells and organelles?

• A) They keep reactants near each other to speed biological reactions.
• B) They allow external chemicals to diffuse freely into and out of the cell.
• C) They encourage cellular respiration at the membrane boundaries.
• D) They keep water out of the cell and organelle interiors.

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Definitions:

P-Value

The probability of observing test results at least as extreme as the results actually observed, assuming that the null hypothesis is correct.

Left Tailed

Refers to a type of hypothesis test where the area of interest, or region of rejection, is located in the left tail of the distribution.

Test-Statistic

A quantity derived from sample data used in a hypothesis test to make a decision about the population parameter.

Right Tailed

Pertaining to a type of hypothesis test where the area of interest is in the right tail of the distribution, typically testing for values greater than a certain number.