All of the Following Involve Active Transport Across Membranes Except

question 40

Multiple Choice

All of the following involve active transport across membranes except

• A) the movement of mineral nutrients from the apoplast to the symplast.
• B) the movement of sugar from mesophyll cells into sieve-tube elements.
• C) the movement of sugar from one sieve-tube element to the next.
• D) the movement of K⁺ across guard cell membranes during stomatal opening.
• E) the movement of mineral nutrients into cells of the root cortex.

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Definitions:

Constant Darkness

An experimental or natural condition where organisms are exposed to darkness for extended periods, used to study circadian rhythms and related phenomena.

Constant Light

An environmental condition where light exposure does not vary, often used in research to study circadian rhythms.

Free-Running Rhythm

Natural cycles that are not influenced by external cues like light, often studied in relation to biological rhythms.

Determined

Having a firm decision and being unwavering in achieving a goal or completing a task.