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Lesson Flashcards: Absorbing Minerals Biology

Selectively permeable

A term describing a membrane’s ability to regulate the substances that pass across it

Nutrients

Substances that an organism requires for energy, building materials, and controlling biological processes

Mineral

An inorganic nutrient that cannot be synthesized by an organism and so must be ingested or absorbed

Semipermeable

A term describing a membrane’s ability to allow some molecules or substances to pass through but not others

Cations

Positively charged ions

Cofactor

A nonprotein molecule or ion that is required for the proper functioning of an enzyme

ATP (adenosine triphosphate)

An energy-carrying molecule that is found in all living cells

Active transport

A process requiring energy by which particles move across a plasma membrane from an area of low concentration to an area of high concentration

Ions

Electrically charged atoms, or groups of atoms, that form an electrically charged molecule

Anions

Negatively charged ions

Diffusion

The movement of molecules from a region of high concentration to a region of low concentration

Micronutrients

Essential elements needed in small amounts

Macronutrients

Minerals that are needed in relatively large amounts

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