7th Grade Final Exam

one or more sugar molecules

• macromolecule

• carbohydrate

• cell

• atom

living things are made of one or more cells; the cell is the smallest unit of life; new cells come from preexisting cells

• cell theory

• lipid

• theory

• atom

large macromolecule that does not dissolve in water

• carbohydrate

• theory

• lipid

• protein

substance that forms by joining many small molecules

• lipid

• molecule

• protein

• macromolecule

macromolecule that forms when a long chain of nucleotides join together

• nucleic acid

• lipid

• molecule

• theory

long chain of amino acid molecules

• macromolecule

• cell theory

• protein

• atom

explanation based on scientific knowledge resulting from several observations and experiments

• nucleic acid

• lipid

• theory

• cell theory

protects the inside of a cell from the environment

• nucleus

• cell wall

• cell membrane

• function

stiff structure outside the cell membrane

• cell

• cell wall

• envelope

• nucleus

membrane-bound organelle that uses light energy and makes food

• cytoplasm

• organelle

• function

• chloroplast