Question 3 son and Stahl on DNA replication, if the cells are cultured for many generations in a medium containing heavy nitrogen (N 15) and thereafter transferred to a medium containing only light nitrogen (N 14), what percentage of double- stranded DNA is composed of two heavy chains after one generation? In the experiment of Mesel- A 25 B 75 C 0 D 50 E 100

Q: Several factors (e.g., time and voltage) affect migration of DNA fragments through the agarose gel.…

A: A DNA fragment is a segment of DNA that has been cleaved or cut from a longer DNA molecule. DNA…

Q: Question 4 Review noncoding DNA and multigene families. Match term and its description. Each term…

A: "Genes" are the fundamental unit of heredity. They store genetic information in the form of DNA,…

Q: A circular DNA of 40 kb (40,000 bases) length is cut with a restriction enzyme whose precise…

A: The probability of a restriction enzyme to be found in a DNA is 4n, where n is the number of bases…

Q: This next question is good practice to be familiar with thinking about what happens to chromosomes…

A: The replication is the process by which new DNA is synthesized from the old DNA molecule by…

Q: Question 32 From the reading "Building a Chromosome for Class," undergraduates at Johns Hopkins…

A: Chromosome is a condensed form of DNA or chromatin. It is clearly visualised in the metaphase of…

Q: QUESTION 18 Which of the following statements about termination mechanisms for nucleic acid…

A: Transcription termination is the process where a nascent RNA is released from its complex with RNA…

Q: 8

A: Answer---  correct option is (c)                     M & P

Q: A bacterial cell divides in the presence 32p, which is a radioactive isotope of phosphorous. This…

A: In conservative DNA replication both the strands of DNA of the parent cell become part of one of the…

Q: 7. If the electrical leads were reversed by mistake (red connected to black), what would be the…

A: Gel electrophoresis is a technique which is used to separate the DNA on ths basis of size, charge…

Q: So considering the answers from the previous 2 questions, what can you speculate about the tightness…

A: DNA It is defined as an organic, complex, molecular structure found in both prokaryotic and…

Q: I need question 42

A: Homologous recombination [hr] is the exchange of DNA sequence between DNA molecules that have very…

Q: QUESTION 1 A plasmid that contains Amp' was transformed into a bacteria. The bacteria that have…

A: A plasmid is a distinct, circular, double-stranded DNA entity that exists autonomously from the…

Q: Question 16 For DNA replication you need NTPS O you need a primer-template junction you need a 3' OH…

A: DNA replication occurs in S phase of interphase. In DNA replication, two copies of the entire genome…

Q: Okazaki fragments O are short DNA fragments are intermediates in DNA replication begin with a short…

A: Okazaki fragments are a short sequence of DNA nucleotides.   The answer is given in step 2.

Q: After you get your gene block, you do a restriction enzyme digest and ligation reaction with the…

A: Bacterial transformation is the transfer of free DNA/extrachromosomal DNA /plasmid released from a…

Q: Why do telomeres shorten each time cells divide? O This only occurs in tissues where telomerase is…

A: Telomeres are the protective caps at the end of the chromosomes. After every cell division telomeres…

Q: For a double stranded coding region DNA transcribed from left to right and whose top strand is…

A: There are two strands of DNA. One strand goes from 5' to 3' and the other strand goes from 3' to 5'.…

Q: QUESTION 2 Which of the following statements about nucleic acid synthesizing enzymes (polymerases)…

A: A DNA polymerase is a member of a family of enzymes that catalyze the synthesis of DNA molecules…

Q: Question 10. Which of the following models best describes how DNA is replicated? A. Conservative B.…

A: Introduction :- The process of replicating a double-stranded DNA molecule into two identical DNA…

Q: QUESTION 24 What is the name of chemical agents that alter specific bases within DNA after completed…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: You are provided with plasmid DNA at 200ng/uL, 10X restriction digestion buffer, restriction enzymes…

A: SolutionStock solutionWorking solutionVolume neededRestriction digestion buffer 10 X1 X8 lDNA200…

Q: Answer the above question for CutVI if the starting DNA were linear instead of circular.

A: Restriction enzymes are enzymes that identify specific sequences in DNA and cut DNA at or near these…

Q: tretch of DNA that is comprised of 500 nucleotides is a Gene

A: The DNA( Deoxyribonucleic acid) is made up of repeating units of the nucleotides, hence these are…

Q: Produce the complimentary DNA strand that would be matched with the provided strand T--A C--G C --G…

A: A complementary strand of DNA is constructed based on base complementarity.  Complementarity is…

Nitrogen metabolism

Nitrogen metabolism is the synthesis, utilization or uptake, breakdown, and excretion of nitrogenous compounds in the body. The nitrogen metabolism encompasses nitrogen fixation, biosynthesis, and the breakdown of amino acids, purines, and pyrimidine. Since nitrogen-containing compounds are required for various life processes, nitrogen is an important element of life.