7. Table 1 contains data that Erwin Chargaff published about the composition of DNA.Table 1. Proportions of nitrogenous bases in the DNA of different organisms. Data from Chargaff and Davidson(1955).OrganismTissue% Adenine% Guanine% Cytosine% ThymineYeast31.318.717.132.9Sea UrchinSperm32.817.718.432.1RatBone marrow28.621.421.528.4ThymusSpermHuman30.919.919.829.4Human30.319.519.930.3a. Based on the data in Table 1, mark the following statements as true (T) or false (F). Justify eachanswer in one or two sentences.1.ln each organism, there is approximately one adenine for every thymine.2.In each organism, the proportions of adenine plus thymine equal those of cytosine plusguanine.-3. In each organism, there is approximately one guanine for every thymine.4.In each organism, there is approximately one guanine for every cytosine.

The Chargaff rule states that there should be 1:1 stoichiometric ratio for purine( adenine and…

Answered: 7. Table 1 contains data that Erwin…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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From a hospital patient affected with a mysterious illness, cells were isolated, cultured and purified its DNA. The DNA samples obtained from the cultures contain 2 different DNA, a double strand and a single strand viral DNA. The base composition of the 2 purified DNA samples were the following result: Which test tube is the human DNA present? Justify your answer.
Watch the demonstration video on nucleic acid quantification on the NanoDrop spectrophotometer: https://cutt.ly/bio150dnaquantification Note: the video is entitled RNA but the method is identical for DNA quantification. 1. At what ratio of A260/280 can we say that DNA is pure? What about RNA and protein?2. While spectrophotometric methods are effective at detecting DNA, a more sensitive but expensive technique called fluorometry is used in sensitive applications. What is the principle behind fluorometry and why is it better than spectrophotometry in detecting DNA?
The bases in the genetic material of Skrulls are named A, B, C and E. A pairs with E and B pairs with C. Therefore there are A-E base pairs and B-c base pairs. A human scientist has four sequences read 5’ to 3’. A single strand of the genetic material is given (assuming that Skrull genetic material is double stranded). ABBECEAABBCBBACCBCBAACABACCCABAEAACAEBEBBCEBBACAEECAAECECAAE ACCAEACBBBCEEABAECBACCCBACCCBACCCBACCCBACCCEBCAACBAEABCEBAEC BBECAAACBACBECABCEAABCBECBCACBBEBABCBBEABCAEACWBAEEABBEACBAE BCEAAEECABBEBCECCAECAABCBBCEECBACAECCECBCEAAEECABBEBCCAE Which of the four sequences would have the highest probability for deletions of more than a few base pairs?
While the three previous paragraphs put on some details about enzymes, a Russian physician and chemist named Phoebus Levene focused on the three major components of a single nucleotide (phosphate, pentose sugar, and nitrogenous base) in 1919. He was also the first to discover the carbohydrate component of RNA (ribose), and carbohydrate component of DNA (deoxyribose). Years later, Levene finally identified how DNA and RNA molecules are put together Then in 1937, Hans Krebs discovered the most famous (probably) process that occur during cell respiration. This series of chemical reactions has three names such as the Citric Acid Cycle, Tricarboxylic Acid Cycle and Krebs Cycle. In this process, glucose and oxygen is converted to carbon dioxide, water, and energy. While working on bacterial samples, Oswald Avery first suggested in 1944 that the genetic material of the cell was possibly the deoxyribonucleic acid. In the middle of the 20th Century, Erwin Chargaff began to oppose Levene's…
A double-stranded DNA molecule (B-DNA) is 100,000 base pairs long. How many complete turns are there in the molecule? * None of the above 10000.0 9090.0 9523.8 O 8333.3
If a 100 base-pair double-stranded DNA fragment has 40 cytosines, how many adenines does it contain?
neat and clean answer please
21:41 จ. 8 ก.ค. ... Reading assignment MD. 201 (No. 1-3) - by J.Kaulpiboon 6. Check your understanding 2 3000 bp. 1500 bp - 500 bp | |||| لی 3 A J Which lane matches each description below? This lane contains the longest DNA fragment. This lane contains the shortest DNA fragment. This lane contains a 1500 base pair (bp) DNA fragment.. ... A 33% 89% +
In order to determine the purity of a DNA sample. spectrophotometry can be carried out at _______ to measure DNA, and _______ to measure protein. The ratio _______ is then calculated, and a number between _______ indicates higher purity. 280 nm; 260 nm; A280/A260; 0.5-1 260 nm; 280 nm; A260/A280; 0.5-1 260 nm; 280 nm; A260/A280; 1.5-2 260 nm; 280 nm; A280/A260; 1.5-2
4. Determine the answers of these multiple choices they are organised at "a,b,c's" in which is allowed in your rules, so they can all be answered thank you very much!! A) A DNA nucleotide is composed of: *Nitrogen base *Phosphate - ribose - nitrogen base *Ribose - nitrogen base *Phosphate - deoxyribose - nitrogen base *Deoxyribose - nitrogen base B) An amino acid contains the following two groups: Acid and Thiol -Carboxyle and Amine -Carbonyl and Carboxyl -Thiol and Amine -Amine and Acid C) Which carbohydrate is part of an RNA molecule? -Ribose -Galactose -Fructose -Glucose -Deoxyribose
Review the table below. Nucleic acid from 4 different samples were analyzed to determine the amounts of nitrogenous bases in each. The amount is shown as a percentage. A G T U C Sample 1 22% 28% 22% 28% Sample 2 30% 30% 20% 20% Sample 3 18% 32% 18% 32% Sample 4 29% 29% 21% 21% What observations can you make from these data? Suggest at least two different observations. What conclusions can be supported by these observations? • Suggest one experiment that you could conduct to test or further investigate one of your conclusions from part b.

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