7th Grade Word List for Science Words

enhancing respiratory and circulatory efficiency; depending on free oxygen or air

living or active in the absence of free oxygen

reproduction without the fusion of gametes

any of numerous small celestial bodies that revolve around the sun

a thermonuclear reaction in the interior of stars; the organic circulation of carbon from the atmosphere into organisms and back again

specialized part of a cell; analogous to an organ

a structure in the cell nucleus that contains DNA

thickness; quantity of something per unit measure, especially per unit length, area, or volume

act of dispersing or diffusing something

a segment of DNA that is involved in producing a polypeptide chain

genetics; inheritance; genetic transmission of characteristics from parent to offspring

metabolic equilibrium actively maintained by several complex biological mechanisms that operate via the autonomic nervous system to offset disrupting changes

cell division that produces reproductive cells in sexually reproducing organisms

cell division in which the nucleus divides into nuclei containing the same number of chromosomes

natural part or structure in animal or plant, capable of performing some special action

discrete and complete living thing, such as animal, plant, fungus or microorganism

diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal

chemical combination brought about by the action of light

changes in kind or type

an alteration in the number

breathing; process of inhaling and exhaling; oxidative process occurring within living cells

reproduction involving the union or fusion of a male and a female gamete

the variety of species in a given region or area

groups of cells that make particular parts of the body; soft thin paper

the process of giving off or exhaling water vapor through the skin or mucous membranes; the emission of water vapor from the leaves of plants

carry from one place to another; carry away; deport