If a Concentration or Electrical Gradient Is Present for a Given

question 63

True/False

If a concentration or electrical gradient is present for a given substance, the substance will always passively permeate the membrane.

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Definitions:

Alveoli

Tiny air sacs in the lungs where gas exchange between the air and blood takes place.

Cohesive Forces

Attractive forces between similar molecules that hold a substance together, such as the attraction between water molecules.

Surface Tension

The elastic tendency of a fluid surface which makes it acquire the least surface area possible, acting like a stretched elastic membrane.

Tracheal Tubes

Tubes that make up part of the respiratory system in insects, allowing gas exchange directly with body cells.