Why would a scientist use a transmission electron microscope (TEM) instead of a compound microscope to view a tissue sample? The TEM will produce an image with a higher resolution.

The TEM allows viewing of individual atoms.

The TEM image will be three-dimensional.

The TEM is used for live samples.

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food

Adistinctive characteristic of mammals that is not observed in other vertebrates is

You are given an electron micrograph of a bacterial cell. in the micrograph you can clearly see three thin layers of different densities surrounding the cell. based on the micrograph, you can infer that this cell is and would appear after application of the gram stain procedure. gram-negative / pink gram-positive / purple gram-positive / pink gram-negative / purple