Lab Quiz 2

By Isolation

We need a pure culture because it is essential in order to study a single bacterial species.

There are two isolation methods the STREAK PLAYE METHOD AND THR POUR PLAYE METHOD.

In the streak plate method a bacterial logical Loop is used to obtain a sample or culture meeting using a septic technique the loop is then streaked across a nutrient Agard surface in a specific manner as the streaking progress is the bacterial cells are spread out farther and farther apart from each other the separated cells reproduce in for a colony separated from other colonies

In the pool or plate method a loop is used similarity to sample material cereal transfers are made to additional two so that each transfer result in a greater delusion of the bacteria present in the regional meeting or simple if the dilution has been adequate bacteria will be separated sufficiently in the soul defied Agard so individual call knees will form you will use this type of method in the and scoping exercise later

Spheres = cocci, singular Coccus Rods = Bacilli, singular Bacillus Rigid Spirals = Spirilla, singular Spirillum Curved rods = Vibrios Short Rods = Coccobacilli Flexible Spirals = Spirochetes

A variety of shapes given in a sample