Pick the best form of microscopy to use in each situation, each answer used only once: You want to figure out if a bacterium can swim in a liquid medium You want to visualize the repeating crystalline structure of the S-layer You want to identify the basic cell wall structure of an unknown bacterium You want to watch proteins of the divisome ✓ [Choose ] Atomic Force Microscopy Phase-contrast microscopy Light microscopy (with staining) Fluorescence microscopy Electron microscopy [Choose [Choose ]

Why is it advantageous for the cell membrane to be fluid in nature?

Figure 13.6 Which of the following statements is true? a. Gram-positive bacteria have a single cell wall formed from peptidoglycan. b. Gram-positive bacteria have an outer membrane. c. The cell wall of Gram-negative bacteria is thick, and the cell wall of Gram-positive bacteria is thin. d. Gram-negative bacteria have a cell wall made of peptidoglycan, while Gram-positive bacteria have a cell wall made of phospholipids.

Figure 4.7 Prokaryotic cells are much smaller than eukaryotic cells. What advantages might small cell size confer on a cell? What advantages might large cell size have?

Figure 3.13 Why does the cis face of the Golgi not face the plasma membrane?

In what situation(s) would a transmission electron microscope be ideal, and why?

A typical prokaryotic cell ________ compared to a eukaryotic cell. a. is smaller in size by a factor of 100 b. is similar in size c. is smaller in size by a factor of one million d. is larger in size by a factor of 10

Sterile normal saline is used in most surgical procedures as an irrigation solution. During certain surgical procedures, such as those for malignancy, the surgeon may request that sterile water be used for irrigation instead of saline following excision of the cancerous mass. Why is normal saline usually used in healthy tissues?