Skin cancer is a disease that occurs when skin cells grow in an uncontrolled way it can be caused by UV light, which can cause alter the genetic sequence of skin cells. which choice below is the best describes how uv light might cause skin cancer
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- New treatments for several conditions are being developed using stem cells in medical waste, such as biopsy material, teeth, menstrual blood, umbilical cords, and fatty tissue removed in liposuction. For example, fat samples from injured horses are used to grow stem cells to treat tendon injuries. Explain how the two defining characteristics of stem cells enable them to be used to replace damaged or diseased tissue, so that the new tissue functions as opposed to forming a scar.What separates cancer cells from normal cells? Describe one form of mutation that can increase the risk of a normal cell being cancerous.What is cancer? What defects are commonly found in cancer cells? Do all cancer cells have mutations in the same genes? Explain.
- Which of the following can occur when genes are not expressed properly? it can result in uncontrolled cell growth, forming tumors the DNA of the cell will be destroyed by RNA only the proteins needed by the specific cell are created genes will create carbohydrates instead of proteinsFor each of the following sentences, fill in the blanks with the best word or phrase selected from the list below. Not all words or phrases will be used; use each word or phrase only once. For a cell's genetic material to be used, the information is first copied from the DNA into the nucleotide sequence of RNA in a process called . Various kinds of RNA are produced, each with different functions, as follows: molecules code for proteins, molecules act as adaptors for protein synthesis, molecules are integral components of the ribosome, and molecules are important in the splicing of RNA transcripts. incorporation FRNA translation MRNA snRNPs transmembrane PRNA transcription TRNA proteinGeneticists are studying a malfunctioning protein that causes impaired endothelial cell migration and angiogenesis. They have noticed that the amino acid sequence of the protein is truncated compared to normal controls. The mutated mRNA strand is isolated, and analysis shows a nonsense mutation located near the 3' end of the coding region. The 3' terminal coding sequence of the abnormal mRNA strand is shown below. 5`- AUG-ACC-ACU-CCA-CUG-UUG-UUC-CAA-GGG-GAG-AGC-UAG-GUC-CGG-GGC-GGA-AAA-UUU-UAA-3` Write down the tRNA anticodon responsible for adding the last amino acid?
- * Google Translate x + re.com/courses/49703/quizzes/244266/take/questions/5315835 Understanding BAC-23 better might be the difference in curing cancer and saving millions of lives! You must sequence its genome and find the genetic code that makes the cancer curing protein. After running several tests, you have found the correct gene segment to be: GGG UCG ACA CUC UUU. Remember that bacteria are weird and their genes are made from a single strand with ribose sugar backbones! 1. Give the correct DNA template for this bacterial gene segment (GGG UCG ACA CUC UUU). ***Please use the following format or it will be marked incorrect*** Example: ABC DEF GHI JKL MNO, all caps, organized in threes with a space in between. Please make my life easier 2. Using the genetic code provided (GGG UCG ACA CUC UUU), translate this gene segment. ***Please use the following format or it will be marked incorrect*** Example: ABC DEF GHI JKL MNO, all caps, organized in threes with a space in between. Please make…You plan to synthesize a peptide to be used as a vaccine to treat melanoma, a particularly aggressive form of skin cancer. Normally, gp100, a protein on the surface of melanocytes, activates cell growth when it is bound by its ligand. Activation of the growth pathway depends on the presence of threonine in the ligand. The effective peptide vaccine will mimic the natural ligand, but won’t cause cell growth and division. Below is the sequence of the natural ligand: LDMKTAG In order to ensure your newly designed peptide vaccine does not cause cell growth upon binding, you must substitute the Threonine residue at position 5. What amino acid would you replace it with, bearing in mind that the peptide should still be similar enough to bind to the gp100 protein in the surface of melanocytes. Explain your choice. Your vaccine will be administered as a topical cream, and you require your peptide to have an overall neutral charge in order to be functional. At what pH should you formulate…One example of a DNA virus (a virus that uses DNA, not RNA, as its genetic material) that causes tumors is human papillomavirus (HPV). Do some research and explain how HPV inactivates the RB protein and indicate with which type(s) of cancer it is associated. Don’t forget to cite your sources.
- Cancer is caused by many different types of gene mutations. Some mutations are in proto-oncogenes, which lead to overexpression of the genes, and other mutations are in tumor suppressor genes, which lead to under expression or no expression in these genes. Which kinds of gene mutations would RNA interference (RNAi) be better at treating? Explain.Human cells are highly resistant to transformation. Experiments have shown that 5 regulatory circuits (pathways) have to be altered before human cells can grow as tumor cells in immunocompromised mice. State each of these circuits. Explain how the alteration of the protein of that particular circuit leads to uncontrolled growth. the mitogenic signaling pathway controlled by Ras. the cell cycle checkpoint controlled by pRb. the alarm pathway controlled by p53. the telomere maintenance pathway controlled by hTERT. the signaling pathways are controlled by protein phosphatase 2A, which modulates the activity of the mTOR, Myc, β-catenin, and PKB/ Akt signaling proteins.(b) (c) Point mutations in multiple tumor suppressor proteins have been linked to cancer. For example changes in the gene for adenomatous-polyposis-coli protein (APC gene) may result in colorectal cancer. Consider the following DNA sense strand. 3-TAC CGG TTG TGA AGC TGA ATC-5' Derive the mRNA molecule from the given DNA strand sequence above, paying attention to the polarity of the molecule. (i) (ii) (iii) (iv) Write down the polypeptide chain sequence arising from the mRNA molecule of the question above, using the table of the genetic code (Table Q1 overleaf) and indicate the C- and the N-terminus of the peptide chain. Point mutations of a cytosine (C) often lead to the dysfunction of the APC protein. Write down all possible polypeptide chains that can result from all possible DNA mutations of cytosines, disregarding a mutation in the MET/START and STOP codons. Specify which of the point mutations identified in (d) are redundant? For the given tRNA for Thrombin (Thr) write down all…