1. Bacteria occur as part of the normal flora of humans and animals. Where do yo
ID: 189050 • Letter: 1
Question
1. Bacteria occur as part of the normal flora of humans and animals. Where do you find these bacteria on humans? 2. Where do you find bacteria on plants? 3. What is a colony? 4. Robert Koch was one of the first scientist to grow bacteria in the lab. Where did he initially grow bacteria 5. What is the function of agar in bacterial growth? 6. Explain the sentence "Bacteria are ubiquitous In this lab we will grow bacterila on different media. Look up and define the following media. Indicate the type of bacteria that can grow on each media (3pts) o Nutrient agar o Trypticase Soy agar o Blood agarExplanation / Answer
1. Bacteria are present in everywhere in the body of human and animals . Every part of body in present the bacteria. Every organism in present the bacteria in humans.
2.every part of plant in present the bacteria like seeds, soil, root, etc etc .. every part of plant in present bacteria so specific every part in present.
3 colony is a specific area or specific cultural growth or a medium to produce the another population. Colony is. A selected culture or media to produce the population of any medium with specific conditions.
4 robert koch makes firstly a media in lab then proceed to dilution process then help to stealing to make a colony then colony in specific conditions to produce a bacteria.
5. Agar media is a solid agar medium which draw Petri disc where grow the media which makes to colony to grow the the bacteria in agar . So bacteria is necessary ya medium is agar .
6. Bacteria is ubiquitous means bacteria is present I. Everywhere in all species , all plant ,animals all bodies ,soil and every environmental condition which present the bacteria.
7 nutrient agar : it is a general medium to wide range to grow a fastidious organism . It contain peptone water .5
0.3 % beef/yeast extract
1.5 agar media,0.5 back and ph condition.
Trypticase soy agar ; it is browth soya agar media which help in cultivation the bacteria.
Blood agar: it contains general nutrient with 5% of sheep blood, this blood agar media used in the fastidious organism and bacteria production. In this media degradation of hemoglobin and called hemolysis process.
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