PCAT PCAT Word by meaning 077

phr. to keep the penis rigid and upright

n. the joint where the top of the arm joins the trunk

n. compound containing 2 elements one of which is a single oxygen

n. inherited disease due to an extra chromosome 21; also known as 'trisomy 21'?

n. region on a catalytic protein away from the main active region

n. three fatty acids joined to a molecule?

v. to experience; to receive; to endure

adj. related to organisms converting sunlight into energy?

n. nostrils?

n. the part of your body containing the digestive organs?