Which statement best describes a function of the proteins embedded in the plasma membrane of cells? * - They selectively allow certain particles into and out of the cell.
- They attract charges in the cell's environment to give the cell a net charge.
- They provide instructions for the processes in the cell.
-They store the energy required by the rest of the membrane to perform its functions.

Which are observations about the tree on the right ,? check all that apply

Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u.s. and mexico. the st. lawrence seaway provides an important trading route for the u.s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.