Multiple choice

When beet root cylinders are washed and placed in cold water, none of the anthocyanins come out. This indicates most likely that plasma membrane is

  1. permeable to anthocyanins

  2. impermeable to anthocyanins

  3. differentially permeable to anthocyanins

  4. dead
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

If the anthocyanin pigments do not leak out of the beet root cells into the cold water, it demonstrates that the plasma membrane is impermeable to these molecules under those specific conditions.

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