when a worm is cut in half and each half develops into a whole worm, this is an example of

two layers of these molecules form the cell membrane

a component of spider webs, they protect the cell from foreign material and speed up chemical reactions

many simple sugar molecules linked together

used to build the cell membrane

all of the chemical activities that an organism's cells perform

sometimes called the blueprints of life

6 characteristics all living things have in common

sugar found in fruits

this food source is broken down into amino acids which are the building blocks of proteins used by cells

What are 3 things cells use for energy

passing of traits from one generation to the next

made of one or only a few sugar molecules

starch found in potatoes

used by cells as a source of energy

compound made up of sugars; a major source of energy for the human body

a lipid that form much of the cell membrane

(adenosine triphosphate) main energy source that cells use for most of their work

A change in an organism's surroundings that causes the organism to react

process of reproduction involving a single parent that results in offspring that are genetically identical to the parent

a compound that cannot mix with water; some store energy, others form cell membrane

a complex organic substance present in living cells, especially DNA or RNA, whose molecules consist of many nucleotide linked in a long chain.

a membrane-covered structure that contains all of the materials necessary for life

process by which organisms maintain a relatively stable internal environment

A complex molecule that provides instructions for making molecules called proteins which pass on genetic characteristics