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Photolyase works in conjunction with two co-factors. The first co-factor (either deazaflavin or methenyltetrahydrofolate) absorb a photon of light or a specific wavelength (in the blue spectrum) and passes this energy to FADH- which then acts as an electron donor, transferring a single electron to the pyramidine photodimer, and in doing so allows the bond between them to be broken.
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What is a DNA repair enzyme activated by visible light?
DNA photolyase
Is DNA replication the same as DNA repair?
no replication makes a whole new strand of identical DNA while repair just replaces or cuts out mutations in the DNA strand
How do uv rays light affect people?
they can cause skin cancer. It does this because the DNA molecules in your body absorb UV light, and the light has enough energy to break bonds in the DNA, causing harmful rearrangements in your genetic code. When cells with damaged DNA reproduce, that can result in cancerous cells.
How can mutagens cause genetic mutations in spite of your body DNA repair enzymes?
Mutagens cause a change in DNA and by this way they can produce mutant DNA repair enzymes.
What is the enzyme that connects the okasaki fragments and participates in DNA repair?
DNA Ligase
What is a DNA repair enzyme activated by visible light?
DNA photolyase
How does DNA reapair enzyme photolyase prevent skin cancer?
Ultraviolet light, when acting on DNA, can lead to covalent linking of adjacent pyrimidine bases. Such pyrimidine dimerization is mutagenic, but this damage can be repaired by an enzyme called photolyase.- Taylor Swift(:
Which of the following can cause a mutation in a gene?
An error in the repair of damaged DNA-Apex
Why is it dangerous to go into the sun without any protection?
In short, sunlight is made of light waves. These light waves are of various energies. The small band of energy we can see is called the visible spectrum. These waves are not dangerous to us. There are light waves that are slightly higher in energy these are known as Ultra Violet(UV) rays. These rays contain enough energy to penetrate your skin cells and cause damage to your DNA. This damage can lead to serious side effects such as skin cancer if you body is unable to properly repair the damage. Luckily the vast majority of the time your body is able to repair the damage through a number of highly complex DNA repair mechanisms.
Is DNA replication the same as DNA repair?
no replication makes a whole new strand of identical DNA while repair just replaces or cuts out mutations in the DNA strand
How do uv rays light affect people?
they can cause skin cancer. It does this because the DNA molecules in your body absorb UV light, and the light has enough energy to break bonds in the DNA, causing harmful rearrangements in your genetic code. When cells with damaged DNA reproduce, that can result in cancerous cells.
When the repair mechanism for DNA fails the result is?
Failure of the DNA repair mechanism can result in cancer, mutation or a defective enzyme.
How can mutagens cause genetic mutations in spite of your body DNA repair enzymes?
Mutagens cause a change in DNA and by this way they can produce mutant DNA repair enzymes.
How can mutations cause genetic mutations in spite of your body's DNA repair enzymes?
Mutagens cause a change in DNA and by this way they can produce mutant DNA repair enzymes.
What are the four enzymes involved in DNA replication and repair?
DNA polymerase III DNA polymerase I DNA Ligase DNA Helicase
How errors in DNA replication are fixed?
Mismatch repair ... nucleotide excision repair
Explain how mutagens can cause genetic mutations in spite of your body's DNA repair enzymes?
Mutagens cause a change in DNA and by this way they can produce mutant DNA repair enzymes.
