Biology 215 Introductory Microbiology Chapter 6 Bacterial Growth We will proceed by considering cell division in bacteria, measurement of growth, conditions for growth and the patterns of growth. Cell elongates 2. Plasma membrane starts to grow in from both sides - meets in the middle and connects.
Cell wall follows path of cell membrane.
Streptococci form successive septa in parallel orientation while staphylococci form a new septum perpendicular to a still unseparated old one, producing 3-dimensional clumps. Some organisms, given optimal conditions of food and temperature have a generation time as little as 20 minutes. Measurement of Cell Growth A. Growth is measured in terms of increase in cell number rather than size 1. Standard plate count after serial dilution. Factors Influencing Growth A. Temperature 1.