Front

A _____________ is one or more sugar molecules.

Back

carbohydrate

Front

Living things are made of cells; the cell is the smallest unit of life; new cells arise from existing cells.

Back

cell theory

Front

Large macromolecules that do not dissolve in water:

Back

lipids

Front

A substance formed by joining many small molecules; prefix means 'large or long.'

Back

macromolecule

Front

A macromolecule formed by a long chain of nucleotides.

Back

nucleic acid

Front

A long chain of amino acids is a _____________.

Back

protein

Front

A ____________ protects the cell from the environment.

Back

cell membrane

Front

A stiff structure outside the cell membrane.

Back

cell wall

Front

Membrane-bound organelle that uses light energy to make food.

Back

chloroplast

Front

Fluid inside a cell containing salts and molecules.

Back

cytoplasm