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Answered 2008-05-25 18:42:20

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What is the function of catalase and superoxide dismutase?

These are enzymes produced by aerobic bacteria in order to protect the bacteria from toxic superoxide ions that accumulate in the presence of oxygen. Superoxide dismutase converts the superoxide ion to hydrogen peroxide, which is converted to water and oxygen by catalase and peroxidase.


How do gram positive bacteria protect themselves?

Gram positive bacteria protect themselves using antibiotic resistance and their flagella to move. They do not have a membrane like the gram negative bacteria.


How do bacteria protect their DNA from the effects of the restriction enzymes?

by methlation of their DNA


Bacteria need to protect their own genomic DNA from restriction endonucleases they produce themselves?

They produce methylase enzyme by adding a mythel group to the endonucleases on their own DNA to protect their DNA from restriction enzymes.


How do phagocytes protect the body-?

Phagocytes protects the body by, ingesting the bacteria, whereby the phagocyte secretes enzymes on the bacteria which digests it.


Why is oxygen dangerous to microorganisms?

Microbial cells have enzymes [superoxide dismutase (SOD), catalase and non-specific peroxidasesthat] can be damaged when exposed to oxygen and any organism that desires to reside in oxygen-present environments must have methods to protect those enzymes and hence themselves. Oxygen will react in the cell to form two major toxic products; hydrogen peroxide and superoxide. But unfortunately strict anaerobes do not posses these protective mechanisms and hence cannot survive in the presence of air and are hence restricted to anaerobic environments.


What is a restriction enzyme's function in nature?

The function of restriction enzymes in bacteria is to protect the bacteria from viruses. By cleaving (cutting up) the viral DNA, the restriction enzymes prevent infection of the bacterium by the virus.


How do mosquitoes protect themselves?

they pee on termites also have bacteria on them selfes


How do bacteria protect themselves?

To protect themselves, many types of bacteria have developed a method to chop up any foreign DNA, like an attacking phage. They do this by creating an endonuclease, which is an enzyme that cuts DNA.


Bacteria methylate their DNA in order to?

Protect their DNA from being excised by their own restriction enzymes such as EcoR1. The bacteria has enzymes that go through and methyl the N6 position of their adenines in order to prevent their own restriction enzymes from cutting their DNA up.


Why do bacteria naturally contain restriction enzymes?

defense against viruses....to protect their own DNA from the viruses


How do microbes protect themselves from other microbes?

They proctect themselfs by methylating their DNA and by using their restriction enzymes.


What organism makes restriction enzymes?

Originally restriction enzymes (RE) are isolated from Bacteria and Archaea. Microorganisms uses REs to protect themselves from the viral infection. For example EcoRI is isolated from E.colianbd BamHI is found in Bacillus amyloliquefaciens. With the advent of rDNA technology these enzymes are now being produced in lab organisms by cloning and expression.


The natural use of restriction enzymes by bacteria is?

restriction enzymes are the enzymes that can cut the DNA at particular sequences ( endonuclease ) . the basic function in bacteria is to protect from phage (viral) DNA i.e., when a bacteriophage attacks the bacteria it sends its genetic material into the bacterial cell , this genetic material then uses the host machinery to produce the viral copies , in order to prevent it ,the bacteria uses the restriction enzyme to cleave the genetic material of the virus and hence renders it useless .


How do gram positive bacteria protect themselves against harsh environments?

because they have very thick layers of peptidoglycan.


How do bacteria protect themselves against viral infection?

One of the top bacterial defenses against viruses is bacterial restriction enzymes. Various types but they all cut viral DNA at what are called restriction sites and destroy it by making the DNA of the virus not transcribed properly.


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They protect themselves by their horns


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they will bite their opponent, as they breed bacteria in their mouths! THIS IS NOT A LIE I PROMISE YOU, YOU CAN GOOGLE IT IF YOU DONT BELIEVE ME!


How do marmosets protect themselves?

how do pygmy marmosets protect themselves


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They protect themselves by squirting ink.


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How do hawks protect themselves


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how do sea stars protect themselves from predators how do sea stars protect themselves from predators


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They will protect your body


How do sloths protect temseleves?

they cannot protect themselves. they are unable to protect themselves due to their slowness.


How do white blood cells help protect the body from infection and disease?

White Blood Sells Send Enzymes To Kill The Infectious Bacteria. Hope This Answers Your Question.