Movement of Substances

Movement of Substances - Movement of Substances There are a...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Movement of Substances There are a few concepts that need to be understood relating to the movement of substances. The movement of substances may occur across a semi-permeable membrane (such as the plasma membrane). A semi-permeable membrane allows some substances to pass through, but not others. The substances, whose movements are being described, may be water (the solvent) or the substance dissolved in the water (the solute). Movement of substances may occur from higher to lower concentrations (down the concentration gradient) or from the opposite direction (up or against the gradient). Solute concentrations vary. A solution may be hypertonic (a higher concentration of solutes), hypotonic (a lower concentration of solutes), or isotonic (an equal concentration of solutes) compared to another region. The movement of substances may be passive or active. If movement is with the concentration or The movement of substances may be passive or active....
View Full Document

Page1 / 2

Movement of Substances - Movement of Substances There are a...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online