n. valve that controls blood flow between the left atrium and the left ventricle in the heart (*) mitral valve (*) leg (*) menstrual period (*) heredity

n. the loss of water from plants through the stomata (*) oculomotor muscles (*) androgen (*) transpiration (*) blastula

n. gland producing milk in women (*) inflammation (*) mammary gland (*) atomic number (*) ophthalmologist

n. a compound that contains a nitrogen base (purine or pyrimidines) connected to a sugar and a phosphate group (*) electron shell (*) nucleotides (*) level (*) primary structure

n. fatty acids that contain as many hydrogen atoms as possible (*) placenta (*) blood vessel (*) saturated fatty acid (*) nephron

n. a break in the surface of the skin; a laceration (*) collagen (*) mandible (*) gas exchange (*) cut

n. enzyme that breaks down fat into fatty acids and glycerol (*) necrosis (*) enterobacteria (*) lipase (*) alkaloid

n. all the members of one species that live in an area (*) solubility (*) fermentation (*) population (*) face

n. the ability to return to its original shape after a force is applied (*) elasticity (*) diglyceride (*) electrical synapse (*) cyclase

n. salt water (*) adrenal glands (*) brine (*) excretion (*) lumen