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when i did my project on the dog and humans mouth some of the bacteria did change color it was weard my test subjects had multipule colored bacteria in there mouth inclewding the people some were green and others were hot pink. not shere why but it was still cool. if you do diside to do a project on this subject use a substince named agar it helps the coloneys grow and be shere to keep the serfice smooth. hope this helped and remember im no expert so the ansers not perfict. SEE YA NICKY
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∙ 16y ago
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∙ 15y agoBacteria don't necessarily have a color, because of them being to small to be seen, and because when they are seen, they are usually see-through, unless iodine or another dye has been added. Some bacteria may have a slight hue of color.
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∙ 12y agoThe answer depends upon which type of microbe is being looked at, but, since they are microscopic and color is produced by reflection of different frequencies of light, almost all appear to be transparent, especially the single celled microbes and those without membranes or nuclei. For purposes of study under a microscope stains are applied to the microbes so that they can be seen and when looking at microscopic pictures of bacteria and other microbes, the bright colors are produced by these stains.
Exceptions to this are the microscopic plants like green algae. Since they have chlorophyll for photosynthesis, they will have some natural green coloration.
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∙ 9y agoBacteria doesnt possess any specific color, they do appear as colored bacteria on plates based on their ability to metabolize the given chemicals. Some of them may appear colorful if they possess pigments but most of time it is due to fungal contamination.
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∙ 9y agoBacteria can come in a wide range of colors. Bacteria are infinitely small and hard to see what each bacteria color may be.
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∙ 15y agoYes. Bacteria often have characteristic colours. For example Staphylococcus aureus (which lives in your nose and sometimes in skin infections) is golden yellow in colour.
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∙ 8y agoBacteria changes the desingned absorb light and change the chemical energy.
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∙ 8y agoThey are colour less organisms. So they are stained to observe
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∙ 9y agoNo. They are not. They are like us in that humans are humans and can't change into cats.
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∙ 13y agobacteria has tint of purple
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Why did bacteria in the agar dish turn yellow?
to see time fly! You may be referring a bacterial transformation experiment. If so, the bacteria turns color to indicate that the DNA that was transferred to the bacteria is being expressed and the transformation was successful. If you are referring to the natural color of bacteria growing in large colonies on agar, that beige color is their natural color only visible when they are growing in colonies by the millions. The yellow color could also be a fungus which has contaminated your plate which happens often in a non-sterile classroom environment. Never open a petri dish after bacterial growth or fungal growth is evident.
How do you tell the difference between bacteria cells and food cells?
If you put iodine on the cell it will turn blue and the bacteria cell will be the same color as before.
What shape are gram negative bacteria?
Gram negative bacteria is shaped like rods and stained a reddish pink color due to the gram staining process. Gram negative bacteria do not form spores.
How does thickness of peptidoglycan affect gram stain outcome?
For Gram Stain experiment. The gram-positive, g+, which stained purple in color (use Crystal violet) as the bacteria contain a thicker layer of peptidoglycan with no lipopolysaccharide and protein bound the outer membrane of the bacteria (bacteria A). The gram-negative, g-, which stained in red (if the safranin (red dye/counter stain is use) appear due to the bacteria (bacteria B) which lack of peptidoglycan and it is bound by a lipopolysaccharide and protein layer. The thicker the peptidoglycan, the more coloring agent (crystal violet ions, CV+) it can absorb. Hence, give more purple in color to the bacteria and this will be the gram-positive, g+ bacteria. On the other hands, bacteria B seem has thinner peptidoglycan thus it absorb less purple color from the CV+, and after decolourise (using alcohol) and stained with safranin (red dye), only the bacteria with lack of peptidoglycan change to red hence we can say bacteria B as gram-negative, g-. Hence the outcome is the bacteria with thicker peptidoglycan layer be the gram-positive, g+(purple color) while the thinner peptidoglycan layer be the gram-negative, g-. (red color)
Some bacteria are greenish in color and live on the surface of water These organisms are probably?
parasites
Which bacteria is bad?
purple bacteria is good but every other color is bad
The color of photosynthetic bacteria is?
different colors depending on their pigment
What bacteria is greenish in color and live on the surface of water?
Algae
Why do gram negative bacteria show pink color?
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What is the advantage of the gram stain over the simple stain?
gram staining differentiates between gram negative and gram positive bacteria by showing different colors. it shows blue or purple like color for gram positive bacteria and red color for gram negative bacteria. where as simple stain gives the same color to all the types of bacteria. hence it is difficult to differentiate between them.
What color is germs?
What color are germs? Germs can be many different colors. But most germs are a very clear green color. Germs get their color by the type of germ or it is. The most common type of germs is bacteria. Bacteria is a type of germ. That is why there are more clearly green colored germs.
Who established the relationship between bacteria an diseases?
my favorite color is purple
What are two ways Bacteria and Blue-green bacteria differ?
Blue green bacteria has color pigments and bacteria doesn't and bacteria is made with many products for humans to use and blue green is harmful they live inc ponds ,mrivers , lakes
How is gram stain used in an experiment involving bacteria?
Bacteria are sorted into two major groups depending on their color after being treated with a dye.
How is a Gram stain used in an experiment involving bacteria?
Bacteria are sorted into two major groups depending on their color after being treated with a dye.
Why did bacteria in the agar dish turn yellow?
to see time fly! You may be referring a bacterial transformation experiment. If so, the bacteria turns color to indicate that the DNA that was transferred to the bacteria is being expressed and the transformation was successful. If you are referring to the natural color of bacteria growing in large colonies on agar, that beige color is their natural color only visible when they are growing in colonies by the millions. The yellow color could also be a fungus which has contaminated your plate which happens often in a non-sterile classroom environment. Never open a petri dish after bacterial growth or fungal growth is evident.
Do pigment producing bacteria alway color the medium in which they are grown?
they do not color the whole medium but only area of growth. And yes they are always produce color on pigment production
