Which features are parts of the topography of an area? check all that apply.
elevation
landforms
people
relief
weather

Pls me i need this ! each cell has genes activated depending on it's job and what kind of cell it is. it is the presence of that causes the repressor protein to fall off and unblock the gene on the lac operon. if a gene is turned on then it is being an additional circular chromosome found in some bacteria that is used in genetic engineering.

Has magnification ability of hundreds of thousands of times

Why are lipids and proteins free to move laterally in membranes?