Which is true of genes?
they are proteins that produce sections of dna which control the cell's activities.
they are sections of dna that produce the proteins that control an organism's
characteristics.
they are the same as traits which show up in an organism iſ they are dominant.
they are features that can be observed rather than measured.

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.

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

Depending on the organism the number of in a cell may change