Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
1) Horace Jones had a colonoscopy shortly after his 50th birthday, and the gastroenterologist noticed an unusual mass of tissue in the region of the sigmoid colon. Subsequent tests and surgery revealed that the mass was malignant, having invaded the submucosal and muscularis layers of the colon. Biopsy of regional lymph nodes was positive, with 2 nodes showing tumor cells.a. What kind of cancer does Mr. Jones have, and what Stage is his cancer?b. If you looked at a tissue slide, what are the likely differences in appearance between tumor cells from his cancer and normal cells from other parts of the colon?2) In general, a change in a single allele of an oncogene can result in tumor growth or cancer, while it takes two changes in both alleles of tumor suppressor genes.a. How do you explain this difference?b.What do these genes code for normally? That is, in a healthy person, what role are the oncogenes and tumor suppressor genes playing, and how do they do it? 3) Hepatitis B, Human Papilloma Virus, Epstein-Barr Virus, and Kaposi sarcoma-associated herpesvirus are all associated with cancer, and are all DNA viruses.a. Are these two facts incidental, or does one help explain the other?b. Another virus associated with cancer is HTLV (Human T cell leukemia-lymphoma virus), which is a retrovirus. How does this relate to the DNA viruses in the list?c.Why do only a small fraction of those infected with one of these viruses develop cancer?
A short-tailed mutant mouse was discovered. Multiple crosses of this mouse to mice with normal tail length produced 27 long-tailed mice and 25 short-tailed mice.
Thymidylate synthetase dTMP from dUMP. However, dUMP must first be made from dUTP by the action of dUTP diphosphohydrolase.
He speculated that geologic columns would have the most height of 72,000 feet. Using his approach and numbers, compute the approximate age of the earth he came to.
calculate the amount of DNA present in your sample if the absorbance at 260 is .3 (remember that an absorbance of 1.0 at 260 means the sample has 50 ul/ml of double-stranded DNA?
Huntington's disease shows the genetic phenomenon of anticipation. what is the molecular explanation for this phenomenon?( please explain clearly)
Sudden addition of oxygen (O2) to a previously anaerobic culture of yeast fermenting grape juice results in a dramatic decrease in the rate of glucose consumption
What would be the most likely treatment to correct this problem? How would this treatment help the patient?
Assume you have identified a mutant E. coli strain that cannot synthesize histidine. To determine the location of the his- mutation on the E. coli chromosome.
The nucleotide sequence of a DNA section is GTA. A mRNA molecule with a complementary codon is transcribed from the DNA. In the process of protein synthesis, a tRNA pairs with the mRNA codon. What is the nucleotide sequence of the tRNA anticodon?
What is the difference between a chromatid and a chromosome? a. Chromatids consist of DNA, whereas chromosomes consist of proteins.
The the codont versus therapod origin theories have been a controversy for a long time. Compare them to any more current theory that has recently emerged.
Would two nucleotides at a time be sufficient to provide enough codons to code for all twenty amino acids? Discuss how many amino acids could be coded for by codons containing only two nucleotides?
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd