Science Image Library
Bacterial Colonies & Streak Plates
from Science Prof Online
1. Obtaining arm plate sample of normal flora on skin; 2. Normal flora bacterial sample from an arm plate; 3. Close up of normal flora bacterial colonies from arm plate sample; 4 & 5. Touch plates, far shot & near. Tpo plate is unwashed hands, bottom left, washed, bottom right scrubbed soap & alcohol.
bacterial colonies grown on TSY agar. These bacteria hare heavily flagellated, so can move. See how colonies spread out in lobes.
1. Micrococcus luteus colonies growing on TSY agar; 2. Streak plate of M. luteus colonies growing on TSY agar, 3, 4 & 5. Arm plate of normal flora of skin. Creamy yellow round colonies are Micrococcus.
Staphylococcus Bacterial Colonies on TSY
Micrococcus luteus Bacterial Colonies on TSY
(Click on photo to enlarge.)
Arm Plate & Touch Plate Bacterial Samples
(Click on photo to enlarge.)
Science Image Library: Bacterial Colony Photos
Page last updated: 6/2015
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TSY agar with sample from dirty dishes on top (note bacterial colonies that grew), and sample from cleaned dishes on bottom.
Bacillus subtilis Bacterial Colonies on TSY
See Page 2 for more photos of bacterial colonoes, including Mycobacteria and Gram-negative bacteria!
Upper left: Plate of Staphylococcus epidermiis colonies written as S. epi, and growing on TSY agar; Upper right: Streak plate of S. epidermidis
viewed from bottom;
Left: Punctiform, creamy white Staphylococcus bacterial colonies on TSY.
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Gram-negative bacterial colonies growing on MacConkey's agar. A pink colony indicates that the bacteria eat the sugar lactose.