Identify the elemental makeup of proteins.
carbon, hydrogen, and oxygen
carbon, hydrogen, and oxygen in a 1: 2: 1 ratio
carbon, hydrogen, oxygen, and nitrogen
carbon, hydrogen, oxygen, nitrogen, and phosphorus

The endoplasmic reticulum (er) is an organelle in some cells. in these cells, it is continuous with the nuclear membrane and forms a large part of the cell\'s total membrane. sort the phrases below as describing rough er, smooth er, both, or neither. note: if you answer any part of this question incorrectly, a single red x will appear indicating that one or more of the phrases are sorted incorrectly.1) found in prokaryites and uekaryotys2) involved in protein synthesis3) involve in lipid synthesis4) contains molecular chaperones in lumen5) bound with ribosomes6) involved in toxin or drug metabolism7) large systemot internnected tubules, vesicles, and sacs8) "packages" enzymes in vesicles for secretion.

What happens when water’s salinity increases? mass decreases. freezing point decreases. buoyancy of objects decreases. the amount of dissolved minerals decreases.

The dense layer of connective tissue that surrounds an entire skeletal muscle is the