Answer:
The correct answer is a. Pseudomonas aeruginosa would be colorless on EMB
Explanation:
Pseudomonas aeruginosa is a gram-positive bacteria that is rod shape. It shows a few nutritional requirements and can even adapt to those conditions in which the other bacteria can be adapt.
It is non-fermentative bacteria so it does not ferment lactose and other carbohydrates. As EMB agar contains lactose and some dye, therefore, the lactose fermenting bacteria ferment the lactose and show good growth and color change.
But as Pseudomonas aeruginosa is a non-fermentative bacteria it does not ferment lactose and does not show any color and forms a colorless colony. Therefore the correct answer is a.
Explain that water moves down a water potential gradient, and the salt solution has a lower water potential than the vacuole so water leaves the vacuole through osmosis
In exam Q's key points are:
- Water potential gradient
- Higher water potential in vacuole
- Leaves through osmosis
1a. Pseudopodia means false feet these are irregular projections found in organisms like amoeba,they help the organism in locomotion capture food etc
1b.a good vacuole is a membrane-enclosed cell vacuole with a digestive system,containing material taken up in by the process of phagocytosis.these are found in amoeba,Protozoa,paramecium
2.the ingestion of bacteria or other material by phagocytes and amoeboid protozoans (wasn’t sure for this one so I had to research)
3.amoeba takes in nutrition by the process called phagocytosis.in this process,a solid food particle is first surrounded by pseudopodia (cytoplasmic filled projection of cell membrane) and forms a vacuole called as Phagosome
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Answer:
what are the options?
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