PCAT PCAT Word by meaning 056

n. a substance that can attract iron or steel

n. spongy, red tissue found in the reticulo-endothelial system of mammals?

v. to be on fire; to scald?

n. epiphysis

n. part of an enzyme where a substrate is accepted and is responsible for its catalytic activity?

adj. through the cell envelope

pref. inner; inside

n. group of related organisms

n. shortening?

n. unstable particles with unpaired electrons