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MMLU / In a laboratory exercise, a student cuts disks of plant leaves and puts them in…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

In a laboratory exercise, a student cuts disks of plant leaves and puts them in a beaker of water. To help submerge the leaves, a drop of soap is added to the water. How does the soap help submerge the leaf disks?

choices

  1. The soap molecules enter through the stomata of the leaf and bond to oxygen molecules.
  2. The soap molecules bond to air bubbles on the surface of the leaf and remove them.
  3. The soap molecules decrease the pH of the water, allowing excess H+ to bond to the leaf surface.
  4. The hydrophobic regions of the soap molecules attach to the waxy leaf surface, while the hydrophilic regions form hydrogen bonds with the water molecules.

subject

high_school_biology

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Source and history

task_id
c55dfb0d-5413-53b9-b86d-5445cdf71e81
task_key
all--test--c55dfb0d-5413-53b9-b86d-5445cdf71e81
task_revision_id
1
config / split
all / test

Official source

initial import