Question

1. the cell membrane acts as a barrier between the cell and its environment. which best describes the type of barrier that the cell membrane forms? a. impermeable, like a brick wall b. permeable but selective, like a wall with gates c. very permeable, like a fishing net d. permeable only to water, like a very fine net 5. the discovery of cells was made possible by the invention of microscopes. today, several different types of microscopes are used by scientists. which of the following best describes transmission electron microscopes? a. transmission microscopes produce images of cell surfaces. b. transmission microscopes produce three - dimensional images of cells. c. transmission microscopes produce highly detailed images of cell structures. d. transmission microscopes produce images of living cells.

Explanation:

4.

The cell - membrane is selectively permeable, allowing certain substances to pass through while restricting others, similar to a wall with gates.

Transmission electron microscopes can produce highly detailed images of cell structures.

Answer:

b. permeable but selective, like a wall with gates

5.