A small protein channel that allows signals to travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell is a/ an

Which one of the following is a correct matching of an organelle and its function?

When ATPase is used in a reaction, it decreases the potential energy of the system.

What do ALL hormones have in common?

Which one of the following is NOT a possible function of the extracellular matrix in animal cells?

The use of a carrier protein to move solute molecules across the plasma membrane from areas of high to low concentration is known as:

In ionic bonding, 

A. Describe the purpose of signal transduction and how it differs from cell-to-cell communication. (4 pts) B. Discuss the key step (s) in a signal cascade. (1 pts)

You have died and are being given the choice to be reincarnated as either a prokaryote or a eukaryote.  (Just go with the premise.)   A. List the characteristics attributed to all cells.  Then differentiate between prokaryotes and eukaryotes. (4 pts) B. Outline the reasons why you would choose to be a prokaryote or a eukaryote.  Present specific examples. (4 pts.)

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