The Following Figure Shows the Movement of Solutes Across a Plasma

question 57

Multiple Choice

The following figure shows the movement of solutes across a plasma membrane in the direction indicated by the arrows.

This movement across the membrane

• A) requires a direct input of cellular energy.
• B) occurs independently of carrier proteins.
• C) occurs by diffusion.
• D) is an example of osmosis.

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Definitions:

Radioactive Particle

Particles emitted from nuclei as a result of nuclear instability, including alpha particles, beta particles, and gamma rays.

Penetrating Power

The ability of a form of radiation to pass through material, depending on the type of radiation and the material's characteristics.

Ionizing Radiation

Radiation with enough energy to remove tightly bound electrons from atoms, thus creating ions and causing molecular damage.

Alpha Decay

A type of radioactive decay in which an atomic nucleus emits an alpha particle (two protons and two neutrons bound together) and transforms into a different element.