What molecule causes a portion of a DNA molecule to unwind for transcription?

Facilitated diffusion requires a specific transporter for a specific molecule.

A group of cells was treated with a protein-digesting enzyme. Which one of the following processes would be LEAST affected by this treatment?

Which of the following is/ are characteristic of regulated variables?

Which structures determine the flexibility of the extracellular matrix?

During interphase, DNA is in long thin strands. In this form, DNA is called

Water-soluble hormones travel through the blood bound to carrier proteins until they reach a target tissue.

When a few intracellular mediator molecules activate several enzymes, and each of these activated enzymes activate still other enzymes, the ligand has initiated

Which one of the following activities requires energy from ATP breakdown?

Name two (2) EFFECTORS (not controlled variables) each for hormone regulation and solute regulation. (4 pts)