Question

What is the absorption maxima for DNA? What does the ratio 260/280 signify? How does the...

What is the absorption maxima for DNA? What does the ratio 260/280 signify?

How does the entire process of conjugation occur? Does physical contact between cells are required for the successful transfer of DNA?

0 0
Add a comment Improve this question Transcribed image text
Answer #1

The Maximum absorption of DNA can be defined as the wavelength at which a sampleshows maximum absorbance. It is also known as Lamda Max, There are several important ion of a substance is needed. There are various factors which describes why maximum absorbance is needed

- As wavelength of every substance is distinct it helps in characterising the properties.   

- Gives information about the analyte electronic structure.

- Gives accurate results and minimises deviations from Lambert Beer Law.

The ratio A260/A280 signifies the a variety of DNA/protein mixtures in the sample. As absorbance of DNA is calculated at wavelength of A 260 nm. As during the quantification of DNA other impurities in the form of protiens are also extracted and to check the impurities A280 is also considered as proteins shows maximum absorption at A280 nm. So for the sake of purity and depict best results the ratio A260/A280 is consideered by measuring the sample absorbance at these two wavelenghts.

Add a comment
Know the answer?
Add Answer to:
What is the absorption maxima for DNA? What does the ratio 260/280 signify? How does the...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • How does a transformed bacterial cell obtain new DNA? See Section 8.5 (Page 186) . transfer...

    How does a transformed bacterial cell obtain new DNA? See Section 8.5 (Page 186) . transfer of a duplicated plasmid between from one bacterial cells to another the uptake of naked DNA from the surrounding environment transfer of bits of DNA by a virus that infects the bacterial cell One bacterial cell transfers DNA to another through a physical bridge called a pilus.

  • How does protein concentration, DNA concentration, and protein:dna ratio for different cells (heart, kidney, liver cells)...

    How does protein concentration, DNA concentration, and protein:dna ratio for different cells (heart, kidney, liver cells) relate to the relative sizes of the cells and the function of the cells?

  • What happens to the distance between maxima when the gratings per mm are increased? How does...

    What happens to the distance between maxima when the gratings per mm are increased? How does changing the wavelength of the laser affect the distances between maxima?

  • es and that they 7) Suppose that one human rypote has the normal number of DNA...

    es and that they 7) Suppose that one human rypote has the normal number of DNA proofreading and repair enzymes and that the function correctly, while another, for some reason, has no such functioning enzymes. As growth and developmen. proceeded, what differences in DNA structure in the cells and overall organism functioning would you expect to f... between the two? 8) In what normal human cells does telomerase function? In what disease does telomerase function in the cells (much to...

  • Spectroscopy 1. What is the relationship between the infrared spectrum and the molecular structure in the...

    Spectroscopy 1. What is the relationship between the infrared spectrum and the molecular structure in the structural determination of organic compounds by means of the correlation tables? 2. How does the interaction between the UV-Vis radiation energy and the material occur? 3. How are electronic removals carried out according to their different types of transition? 4. Indicate the absorption maxima of the most common chromophores and the factors that determine their displacements: the conjugation and the solvent. 5. How is...

  • How DNA Is Copied 4. What does it mean that the two strands of DNA are...

    How DNA Is Copied 4. What does it mean that the two strands of DNA are complementary? 5. What is DNA replication?, 6. Using your notes, book, and this assignment, place the steps of DNA replication in the correct order. a. The enzyme DNA polymerase moves along the exposed strands and adds complementary nucleotides to each nucleotide in each existing strand. b. The DNA double helix breaks or unzips down the middle between the base pairs. C. A complementary strand...

  • Firstly I could do with a brief description of mitochondrial DNA. How does the structure of...

    Firstly I could do with a brief description of mitochondrial DNA. How does the structure of DNA in mitochondria compare to animal DNA (for the sake of simplicity let's say human - some animals might have unusual DNA structure) and what living organism is the mitochondrial genome most akin to? (Circular like bacteria maybe?) and are the mitochondria within a single human homogenous? Secondly, and most importantly to my aim, does the mitochondrial genome recombine in anyway? Is the process...

  • How does the reserve ratio change if the Fed increases the required reserve ratio? How does...

    How does the reserve ratio change if the Fed increases the required reserve ratio? How does the currency-deposit ratio change if people decide to keep more of their money in cash rather than depositing it? If people decide to hold zero currency (, meaning the currency- deposit ratio goes to zero), what is the relationship between the money supply and the monetary base (what is the money multiplier)? If people decide to hold all of their money as currency and...

  • 7. What are prions? a. Mobile segments of DNA b. Tiny molecules of RNA that infect...

    7. What are prions? a. Mobile segments of DNA b. Tiny molecules of RNA that infect plants c. Viral DNA that has to integrate into the host genome d. Misfolded versions of normal brain protein e. Viruses that invade bacteria 28. The difference between vertical and horizontal transmis plant to its of plant viruses is that , and horizontal transmission is one plant spreading thaves to lowe t the same vertical transmission is the spread of viruses from upper among...

  • Mitosis Meiosis 1. Define the Term 2. In what part of the body does it occur?...

    Mitosis Meiosis 1. Define the Term 2. In what part of the body does it occur? 3. Does it start with DNA Replication? 4. How many total cell divisions does it include? Answer these questions about the CELLS PRODUCED BY THIS PROCESS (daughter cells): 5. Are they genetically identical to each other? 6. Are they genetically identical to the original parent cell? 7. Are they Haploid or Diploid? 8. In a human, how many chromosomes do they have?

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT