Answer: B) Rough endoplasmic reticulum
Explanation:
Answer: B. Into the cell
Explanation: If a cell is put into a hypertonic solution, water will leave the cell. When a cell is put into a hypotonic solution, water will enter the cell. And a cell in an isotonic solution water moves into and out of cell at the same time.
Answer:
G-protein-linked receptor
Explanation:
Epinephrine acts via G-protein-linked receptors. The heterotrimeric G proteins located within the cell are activated by G protein-coupled receptors that span the cell membrane. Signaling molecules bind to a domain on the GPCR located outside the cell, and an intracellular GPCR domain then in turn activates a particular G protein.
Mammals. I am no scientist, but I think that they are closer to mammals due to the fact that they are warm-blooded, and they raise their young. Reptiles are cold blooded and usually leave their offspring to fend for themselves.
Ribosomes synthesize proteins