Which body in the solar system usually contains an atmosphere?

How do diseases caused by bacteria and diseases caused by viruses react to antibiotics?

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

19. a cell is viewed under a microscope and is found to have two nuclear envelopes and spindles that appear to be breaking apart. which phase of mitosis is the cell most likely in? a. metaphase b. prophase c. telophase d. anaphase