Usually gram negative bacteria willl always stain Gram negative. The property of the Gram Negative bacterai that makes them stain Gram negative is their thin cell wall (which is composed of peptidoglycan).
I believe what you intend to ask is under what conditions willl a Gram Positive bacteria turn into a Gram Negative bacteria.
The reason that Gram Positive bacteria stain gram positive is becuase their thick peptidoglycan cell wall retains a purple stain in the gram staining process. When Gram positive bacteria are grwon in a single culture, such as a test tube, for a long period of time without adding any additional nutrients to the broth then the broth will have a low nutrient concentration. When there is a low amount of nutirents present then the Gram positive bacteria will only make a thin cell wall. By making a thin cell wall the gram positive bacteria will not retain the purple stain and will stain gram negative.
Just remember that the bacteria is still Gram positive but just composes a thin cell wall that makes it stain gram negative. It is for this reason that it is suggested to only Gram stain a fresh bacterial culture as this will usually prevent a false gram negative stain
Thursday, May 7, 2009
What poison is produced by bacteria?
please!! my teacher told me to look in my text book and its not there and its used for points. wth!
What poison is produced by bacteria?
it is called "bacteriotoxin"
Reply:These are known as "toxins" which are specifically biological poisons.
Reply:germs, haha
but their are hundreds of different types which are produced from different things.. too many to list.
i will give you two of them: salmonella, ecoli
night jasmine
What poison is produced by bacteria?
it is called "bacteriotoxin"
Reply:These are known as "toxins" which are specifically biological poisons.
Reply:germs, haha
but their are hundreds of different types which are produced from different things.. too many to list.
i will give you two of them: salmonella, ecoli
night jasmine
Beer Pong. Drinking game or Bacteria Germ play ground?
It's sick even if you do dip the ball in a cup of water. Stop Beer Pong before you die!
Beer Pong. Drinking game or Bacteria Germ play ground?
lol i wouldn't go as far to say you'd die! it is a little gross i'll admit, but i think the worse that would happen is to get a little sick. I've played the games a few times and never once had any side affects. lol i guess better safe than sorry though! :-P
Reply:well i never seen ppl dip the ball in water lol... but i see what u mean by the game spreading bacteria... but maybe the alcohol kills some of the germs... lol.. mostly making excuses :-P
Beer Pong. Drinking game or Bacteria Germ play ground?
lol i wouldn't go as far to say you'd die! it is a little gross i'll admit, but i think the worse that would happen is to get a little sick. I've played the games a few times and never once had any side affects. lol i guess better safe than sorry though! :-P
Reply:well i never seen ppl dip the ball in water lol... but i see what u mean by the game spreading bacteria... but maybe the alcohol kills some of the germs... lol.. mostly making excuses :-P
Major help! Bronchitis issues NOT bacteria need advice!?
Title says it all. I kno when I feel like my bronchitis is coming on because it is right after my allergies start acting up and at night time I am taking in all the phlegm. what is the best over the counter medicine to help get the phlegm out? That is my issue. I really cant get full blown bronchitis now. I am way too busy to be at home in my bed unable to move for a week then not having energy to do anything the next week
Major help! Bronchitis issues NOT bacteria need advice!?
are you sure this is bronchitis and not a typical sinus infection? If so, you will need antibiotics which are not available over-the-counter.
Reply:i feel sad for you that you have had something so painful more than once or at all in your life....please try raw onions or robitussin....depends on what you are into....if you really dont find somthing that works, at least use ibuprofin for the pain and ricola or some other menthol cough drop to inhibit the cough trigger....whatever you do, wash your hands, arms and face frequently...bronchitis is contagious through saliva, not airborn
Reply:Check out my site... www.thekelliclub.com Look for the bronchitis formula. I'm not trying to sell you anything. You can get all the stuff at the Vitamin Shoppe. It really works.
For the vitamin C, use Ester C. It is easier on the stomach. You can get everything you need at the Vitamin Shoppe. Don't go to GNC. They have a lot of synthetic stuff.
One thing that really helps allergic bronchitis is MSM. You might want to start taking it daily. It could take up to 2 hours to be effective.
Reply:There is an over-the-counter medication called, "Mucinex". It is an expectorant to help break up the congestion associated with mucus build up. Chances are you might not be dealing with minor allergies, you might have a sinus infection. Saline solution/sprays might be helpful to clear the nasal passages. However, if this is a consistent problem you really should see a doctor so you can get it resolved sooner rather than later.
Reply:Even though it is an allergic reaction that is causing you to produce mucus it is still your immune system that is causing it. Try taking an antihistamine to slow the reaction, (Benedryl) and drink plenty of fluids which should help thin the mucus so that you can get rid of it. Look for something with guaifenisan (an expectorant) which will help thin the mucus also.
Major help! Bronchitis issues NOT bacteria need advice!?
are you sure this is bronchitis and not a typical sinus infection? If so, you will need antibiotics which are not available over-the-counter.
Reply:i feel sad for you that you have had something so painful more than once or at all in your life....please try raw onions or robitussin....depends on what you are into....if you really dont find somthing that works, at least use ibuprofin for the pain and ricola or some other menthol cough drop to inhibit the cough trigger....whatever you do, wash your hands, arms and face frequently...bronchitis is contagious through saliva, not airborn
Reply:Check out my site... www.thekelliclub.com Look for the bronchitis formula. I'm not trying to sell you anything. You can get all the stuff at the Vitamin Shoppe. It really works.
For the vitamin C, use Ester C. It is easier on the stomach. You can get everything you need at the Vitamin Shoppe. Don't go to GNC. They have a lot of synthetic stuff.
One thing that really helps allergic bronchitis is MSM. You might want to start taking it daily. It could take up to 2 hours to be effective.
Reply:There is an over-the-counter medication called, "Mucinex". It is an expectorant to help break up the congestion associated with mucus build up. Chances are you might not be dealing with minor allergies, you might have a sinus infection. Saline solution/sprays might be helpful to clear the nasal passages. However, if this is a consistent problem you really should see a doctor so you can get it resolved sooner rather than later.
Reply:Even though it is an allergic reaction that is causing you to produce mucus it is still your immune system that is causing it. Try taking an antihistamine to slow the reaction, (Benedryl) and drink plenty of fluids which should help thin the mucus so that you can get rid of it. Look for something with guaifenisan (an expectorant) which will help thin the mucus also.
Once it was proven that bacteria caused certain disease, what's the next step?
Antibiotics.
Once it was proven that bacteria caused certain disease, what's the next step?
Or any alcohol substance to burn away the bacteria.
Reply:Trying to find another bacteria to combat it that you're body can handle or won't be worse than the initial bacteria.
-or-
Add a chemical that can harm/kill the bacteria that won't be worse than the initial cause.
Once it was proven that bacteria caused certain disease, what's the next step?
Or any alcohol substance to burn away the bacteria.
Reply:Trying to find another bacteria to combat it that you're body can handle or won't be worse than the initial bacteria.
-or-
Add a chemical that can harm/kill the bacteria that won't be worse than the initial cause.
Tell me about viruses and bacteria!?
answer my question ASAP!
Tell me about viruses and bacteria!?
What do you want to know?
Bacteria are prokaryotic single celled organisms. Typical features include cell wall and flagella. Can be rod or cocci shaped. Examples in E. coli and Samonella.
Viruses are obligate intracellular pathogens that do not have means to provide engery or replicate its genome.
frangipni
Tell me about viruses and bacteria!?
What do you want to know?
Bacteria are prokaryotic single celled organisms. Typical features include cell wall and flagella. Can be rod or cocci shaped. Examples in E. coli and Samonella.
Viruses are obligate intracellular pathogens that do not have means to provide engery or replicate its genome.
frangipni
Why/How does alcohol kill bacteria?
Alcohol kills bacteria by denaturing proteins in the bacterium. Even though water is the most common ingredient in Listerine, swishing with water for 30 seconds does not kill bacteria. Some dentists wonder whether the active ingredients are put into Listerine simply for marketing purposes; advertising a product that contains 78.2% water and 21.6% alcohol will not sell well. If it were true that the active ingredients in Listerine have little or no impact on killing bacteria, then it would be cheaper for a customer to buy a bottle of mouthrinse that contains 21.6% ethanol and no other ingredients except water
Do dogs have e-loci bacteria in their hind parts?
my dog is always licking my face or ear. i think all dogs do and i also think they all lick their butts at some point. so why isnt there some massive out break of e coli in people since we all have dogs?
Do dogs have e-loci bacteria in their hind parts?
E coli is naturally found in the gut of mammals such as humans and dogs. There are a number of reasons why such a breakout you describe does not occur.
The main one that springs to mind is that we all carry a natural immunity to certain germs. This could be because we have been exposed to it previously in life and as such our immune system will recognize the germ (in this case the strain of Ecoli particular to your pet) and subsequently, produce antibodies which will fight possible infection from said germ.
Another possibility is that saliva contains enzymes which assist in the breakdown of food and other organic material. Saliva is basically the first part of our (and your dog's) digestive process. As these enzymes are designed to break down organic matter (which would include the bacteria found in faeces - ewww!) then the E coli (if present) would not get the chance to infect us as the enzymes have begun to break the germ down.
Do dogs have e-loci bacteria in their hind parts?
E coli is naturally found in the gut of mammals such as humans and dogs. There are a number of reasons why such a breakout you describe does not occur.
The main one that springs to mind is that we all carry a natural immunity to certain germs. This could be because we have been exposed to it previously in life and as such our immune system will recognize the germ (in this case the strain of Ecoli particular to your pet) and subsequently, produce antibodies which will fight possible infection from said germ.
Another possibility is that saliva contains enzymes which assist in the breakdown of food and other organic material. Saliva is basically the first part of our (and your dog's) digestive process. As these enzymes are designed to break down organic matter (which would include the bacteria found in faeces - ewww!) then the E coli (if present) would not get the chance to infect us as the enzymes have begun to break the germ down.
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