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Cell Membrane/Diffusion/Circulatory System
Terms in this set (35)
(aka cardiovascular system) This system works as the transportation highway for the body. It consists of the heart, blood, and blood vessels. It transports substances such as oxygen, carbon dioxide, and nutrients in the body.
Cell membrane (plasma membrane)
phospholipid bilayer that surrounds all cells and regulates what enters and leaves the cell
Movement of molecules from an area of higher concentration to an area of lower concentration.
Diffusion of water through a selectively permeable membrane
to make, put together
The process by which nutrient molecules pass through the wall of the digestive system into the blood
Breakdown of food substances into simpler forms that can be absorbed and used
Energy-requiring process that moves material across a cell membrane against a concentration difference
Passive Transport (Diffusion)
A process that requires no energy to move molecules down their concentration gradient(from high to low concentration)
A compound that changes color in the presence of a specific substance.
Plastic-like cellulose tubing with tiny holes to allow small molecules to pass through (semi-permeable).
A group of atoms bonded together
A storage polysaccharide in plants consisting entirely of glucose.
A simple sugar that is an important source of energy.
difference in the concentration of a substance from one location to another
when comparing two solutions, the solution with the greater concentration of solutes
Having a lower concentration of solute than another solution
when the concentration of two solutions is the same
(adenosine triphosphate) main energy source that cells use for most of their work
water that has been purified by distillation and contains no ions.
membranes that allow some substances through but not others
A double layer of phospholipids that makes up plasma and organelle membranes.
Embedded proteins that perform specific functions for the cell membrane; such as transport of molecules.
This happens when a cell shrinks and shrivels; can result in cell death if severe.
destruction, breakdown, separation
hydrogen ion concentration
proteins that act as biological catalysts, protein substances that speed up chemical reactions.
Specialized structure that performs important cellular functions within a eukaryotic cell
the starches and sugars present in foods
DNA and RNA, made of nucleotides
An organic compound that is made of one or more chains of amino acids and that is a principal component of all cells
Energy-rich organic compounds, such as fats, oils, and waxes, that are made of carbon, hydrogen, and oxygen.
Compounds in food that the body requires for proper growth, maintenance, and functioning