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Smallest particle of an element that retains all properites

Organic Compounds

Contain carbon and are versitle.

Organic Compounds

Can share electrons and can bond well.


Can form circular bonds


Is a compound


Makes up the cell wall in plants

Amino Acids

Join together to create proteins


Hook together amino acids to form proteins

Peptide Bond

When 2 amino acids bond together


A protein that forms bones, tendons, ligaments and cartilage.

Endergonic Reaction

Reactions that involve a net absorption of free energy


A chemical that reduces the amount of activation energy needed for a reaction but is not a reaction.

Activation Energy

The amount of energy required for a chemical reaction to start and continue on its own


A subatomic particle with a positive charge.


The central core of an atom and consist of 2 kinds of particles.


A subatomic particle with no electrical charge.


A chemical structure composed of one or more atoms.


Anything that occupies space and has mass.


A fundamental property of an object generally regarded as equivalent to the amount of matter in the object.

Ionic Bond

A bond formed by electrical attration between 2 oppositely charged ions.


An atom or compound with a net electrical charge.

Energy Level

Can hold only a certain number of electrons.


A substance that ordinarily cannot be broken down chemically to form simpler kinds of matter.


A particle with a negative electric charge that orbits the nucleus of an atom.

Covalent Bond

A bond that forms when 2 atoms share one or more pairs of electrons.


A pure substance that is made up of atoms of 2 or more elements.

Chemical Reaction

The process of breaking chemical bonds, forming new bonds or both.



Atomic Number

The number of protons in an atom.


The simplest particle of an element that retains all the properties of that element.

Transmission Electron Microscope

Transmits a beam of electrons through a very thinly sliced specimen.


The slide holding the specimen sits.


One of several types of bodies with a specialized function that is suspended in the cytoplasm and found in eukaryotic cells


In an atom, the core of protons and neutrons; in a eukaryotic cell, the organelle that contains most of the DNA and directs most of the cell's activities.


A cell that contains a nucleus and membrane-bound organelles.

Cell Theory

That all living things are made up of cells, that cells are the basic units of organisms, and that cells come only from existing cells.

Cell Membrane

The lipid bilayer that forms the outer boundary of a cell.


A membrane-bound structure that is the basic unit of life.


A lipid made of three fatty acid molecules and one glycerol molecule.


A part, substance, or element that lies beneath and supports another; the reactant in any enzyme-catalyzed reaction.


A lipid in which the molecule is composed of four carbon rings.

Ribonucleic Acid (RNA)

A nucleic acid composed of a single strand and is distinguished from DNA by containing ribose and uracil.


An organic compound composed of one or more chains of polypeptides which in turn are formed from amino acids.


A complex carbohydrate composed of 3 or more monosaccharides.


A long chain of several amino acids.

Nucleic Acid

An organic molecule, DNA or RNA, that stores and carries important information for cell function.


A complex lipid having 2 fatty acids joined by a molecule of glycerol.

Peptide Bond

A covalent bond between 2 amino acids.


A monomer of DNA and RNA consisting of a nitrogen base, a sugar, and a phosphate group.


A simple sugar such as fructose or glucose.


A kind of organic compound that is unsoluble in water, such as, fats and steroids.


One of 2 or more compounds that differ instructure but not in molecular composition.


Referring to the molecular repulsion of water.


Referring to the molecular attraction of water.

Fatty Acid

A monomer that is part of most lipids.

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