Find the source of nitrogen for the two ring systems

Assignment Help Biology
Reference no: EM1394282

Question: The pyrimidine and purine bases are nitrogen containing compounds. What is the source of nitrogen for these two ring systems? In most examples, the reaction to add nitrogen to the growing ring structure requires an activation of a carbon atom. What is the common mechanism used to carry out this activation? Be able to recognize this when you see a reaction of this sort.
Question: The activity of ribonucleotide reductase is regulated in two ways: its total activity is controlled and its substrate specificity is controlled. What are the metabolites that regulate both of these activities? How does the cell balance the concentration of the various deoxynucleotide diphosphates? What is the principal similarity between ribonucleotide reductase and the nitrogenase complex?

Reference no: EM1394282

Questions Cloud

Thymidylate synthetase dtmp from dump : Thymidylate synthetase dTMP from dUMP. However, dUMP must first be made from dUTP by the action of dUTP diphosphohydrolase.
Estimates the change in productivity : The number of defective items produced has dropped from 10 pieces per day to 1 per day. The production facility operates strictly eight hours per day. Estimates the change in productivity for Aztec using the new assembly process.
Gaussian copula for time to default : Suppose that bank has made a large number of loans of a certain type. The one year probability of default each loan 1.2%. The bank uses a Gaussian copula for time to default.
What is penn truckings cost of retained earnings : Analysts expect Penn Trucking dividends to grow by 6% per year for the foreseeable future. Using the capital asset pricing model, illustrate what is Penn Trucking's cost of retained earnings.
Find the source of nitrogen for the two ring systems : he pyrimidine and purine bases are nitrogen containing compounds. What is the source of nitrogen for these two ring systems? In most examples,
Illustrate what effectiveness approach would you prefer : In a recent survey of 250 internet users, 150 said which they pay bills online. At the 5% level of significance, test whether the proportion of internet users paying bills online is now more than 50%.
Sample size-nickel : A previous study of nickels showed that the standard deviation of the weight of nickels is 150 milligrams.
How ctp differs from utp : CTP differs from UTP by a single nitrogen atom in place of oxygen on the pyrimidine ring. What serves as the source of the nitrogen atom in the reaction catalyzed by CTP Synthetase?
Illustrate what was bps strategy prior : Conduct research also provide an analysis of BP's strategy before the accident occurred using appropriate strategic frameworks.

Reviews

Write a Review

Biology Questions & Answers

  Difficulities of living in the epipelagic

Explain the difficulities of living in the epipelagic? Discuss and describe three adaptations for dealing with the difficulities you described to answer the question above.

  How many bacteria were on the soap

Suppose after washing your hands, you leave ten bacterial cells on the new bar of soap. You next decide to do a plate count of the soap after it is left in the soap dish for 24 hours. You dilute 1g of the soap 1:10 and plate it on a standard plate co..

  Sequencing the genome of an amoeba

Suppose that you are a scientist sequencing the genomes of organisms. You start two new projects, one sequencing the genome of an amoeba.

  Explain why cell negative on the inside

Explain why is potassium not equally distributed across the membrane and why is cell negative on the inside?

  Unattached kinetochore of a monoattached chromosome

2-types of signals have been implicated in metaphase checkpoint arrest. Think about the results of a recent experiment in which the unattached kinetochore of a monoattached chromosome was destroyed by a laser beam.

  Provide symbols to represent the genes and alleles

One haploid strain is unable to synthesize uracil but not unable to synthesize leucine, while another haploid strain is able to synthesize uracil but not leucine.

  Question about biology innovation

Over the long period of time that life has existed on Earth, there have been number of important or significant innovations including endosymbiosis to create mitochondria and chloroplasts.

  Which secretes hormones into the blood

Compare and contrast signaling by neurons which secret neurotransmitters at synapses to signaling carried out by endocrine cells, that secretes hormones into the blood, define the relative advantage of the two mechanisms.

  The overall reaction of aerobic respiration of glucose

The overall reaction of aerobic respiration of glucose is summarized as.

  Define a dimple in chin is a dominant characteristic

A man with a chin dimple and a non dimpled woman produce eight children, all having the chin dimple. Can you be certain of the man's genotype? Why or why not? What genotype is more likely, and why gives reason.

  Find the sign and magnitude of membrane potential

Assume that in other ltxnsp cells the HCO 3 -  in the ICF = 1mM, 10mM in the ECF, and is passively distributed across the membrane.

  Changes in the mother vital signs after birth

Explain the changes in the mother's vital signs after birth. What happens to the BP? What BP pattern would indicate shock from blood loss?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd