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This is a modified vocabulary list for Module 6. NOT ALL VOCAB WORDS INCLUDED


The transport of dissolved substances into cells


The breakdown of absorbed substances


The removal of soluble waste materials


The release of biosynthesized substances


Maintaining the status quo

Middle lamella

The thin film between the cell walls of adjacent plant cells

Plasma membrane

The semipermeable membrane between the cell contents and either the cell wall or the cell's surroundings


A jellylike fluid inside the cell in which the organelles are suspended


Substances in which at least one atom has an imbalance of protons and electrons


The organelles in which nutrients are converted to energy


The organelle in animal cells responsible for hydrolysis reactions that break down proteins, polysaccharides, disaccharides, and some lipids


Non-membrane-bounded organelles responsible for protein synthesis


Organelles that store starches or oils


Organelles that contain pigments used in photosynthesis

Golgi bodies

The organelles where proteins and lipids are stored and then modified to suit the needs of the cell


Spiral strands of protein molecules that form a tubelike structure

Nuclear membrane

A highly- porous membrane that separates the nucleus from the cytoplasm


Clusters of DNA, RNA, and proteins in the nucleus of a cell


A network of fibers that holds the cell together, helps the cell to keep its shape, and aids in movement


A lipid in which one of the fatty acid molecules has been replaced by a molecule that contains a phosphate group

Active transport

Movement of molecules through the plasma membrane (typically opposite the dictates of osmosis or diffusion) aided by apocess that requires energy

Isotonic solution

A solution in which the concentration of solutes is essentially equal to that of the cell which resides in the solution


Collapse of a walled cell's cytoplasm due to a lack of water

Hypotonic solution

A solution in which the concentration of solutes is less than that of the cell that resides in the solution

Activation energy

Energy necessary to get a chemical reaction going

Electron transport system

This is the last stage of cellular respiration. It takes place in the mitochondrion. The hydrogen that was produced in the previous three stages is carefully reacted with oxygen to make water.

Endoplasmic recticulum

An organelle composed of an extensive network of folded membranes that performs several tasks within a cell


The process by which a cell engulfs foreign substances or other cells

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