Which of the following is true about bacteria?
A) all bacteria cells are smaller than 100 micrometers in diameter
B) the cell wall controls the movement of small molecules into and out of the cell
C) gram negative bacteria become protoplasts when their cell wall is digested away
D) bacterial endospores are reproductive structures

Question

Quizplus · Accepted Answer

Generally, bacteria cells are smaller than 100 micrometers in diameter. However, there are exceptions such as Epulopiscium fishelsoni which can be up to 600 micrometers long.

Answer: B
 The cell wall of bacteria is responsible for maintaining the shape of bacterial cells and controlling the movement of small molecules into and out of the cell.

Answer: C
 Gram-negative bacteria have a cell membrane covered by a thin layer of peptidoglycan and an outer membrane composed of lipopolysaccharides. The peptidoglycan layer can be digested by enzymes like lysozyme, resulting in the formation of protoplasts.

Answer: D
 Bacterial endospores are not reproductive structures but are specialized structures produced by certain bacteria to withstand harsh environmental conditions. Endospore formation is a survival strategy and not a reproductive strategy.

Which of the Following Is True About Bacteria