Some drugs are now being delivered into cells through liposomes, in which the drug is surrounded by a phospholipid bilayer. how do the drugs enter into the cell?

What is the next step in muscle contraction after the actin changes shape? (apex)

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm