The various elements that make up the cell are:

• 59% Hydrogen (H)
• 24% Oxygen (O)
• 11% Carbon (C)
• 4% Nitrogen (N)
• 2% Others – Phosphorus (P), Sulfur (S), etc.

118 elements

Cell Shape Each cell type has evolved a shape that is best related to its function. For example, the neuron in Figure below has long, thin extensions (axons and dendrites) that reach out to other nerve cells. The extensions help the neuron pass chemical and electrical messages quickly through the body.

Cells are largely composed of compounds that contain carbon. These complex molecules are typically made up of chains and rings that contain hydrogen, oxygen, and nitrogen atoms, as well as carbon atoms. These molecules may consist of anywhere from 10 to millions of atoms linked together in specific arrays.

An atom is made up of three particles: protons, neutrons and electrons.

Gold is a chemical element with the symbol Au (from Latin: aurum) and atomic number 79, making it one of the higher atomic number elements that occur naturally. In a pure form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal.

Examples of elements include carbon, oxygen, hydrogen, gold, silver and iron. Each element is made up of just one type of atom. An atom is the smallest particle of an element that still characterizes the element.

A pure element or compound contains only one substance, with no other substances mixed in. Impure materials may be mixtures of elements, mixtures of compounds, or mixtures of elements and compounds.

The first 30 elements of the periodic table and their symbols

Terms in this set (36)

• Hydrogen. H.
• Helium. He.
• Lithium. Li.
• Beryllium. Be.
• Boron. B.
• Carbon. C.
• Nitrogen. N.
• Oxygen. O.

What are the 30 Elements