Description : A synthetic nucleotide analogue, used in the chemotherapy of cancer and viral infections is (A) Arabinosyl cytosine (B) 4-Hydroxypyrazolopyrimidine (C) 6-Mercaptopurine (D) 6-Thioguanine
Last Answer : Answer : A
Description : A synthetic nucleotide analogue, 4-hydroxypyrazolopyrimidine is used in the treatment of (A) Acute nephritis (B) Gout (C) Cystic fibrosis of lung (D) Multiple myeloma
Last Answer : Answer : B
Description : Select the drug which is used exclusively in organ transplantation and autoimmune diseases, but not in cancers: A. Cyclophosphamide B. Cyclosporine C. Methotrexate D. 6-Mercaptopurine
Last Answer : B. Cyclosporine
Description : Select the antimetabolite which is toxic to Leishmania but not to mammalian cells: A. Allopurinol B. Cytarabine C. 6-Mercaptopurine D. 6-Thioguanine
Last Answer : A. Allopurino
Description : Allopurinol does not inhibit the metabolism of: A. 6-Mercaptopurine B. 6-Thioguanine C. Azathioprine D. Theophylline
Last Answer : B. 6-Thioguanine
Description : The following are true : a. the HLA proteins are found within the cytoplasm of the cells b. HLA class I antigens are expressed on all cells with nuclei c. HLA class II antigens presents ... on chromosome 6 e. HLA tissue typing is carried out in all forms of transplantation to prevent rejection
Last Answer : HLA class I antigens are expressed on all cells with nuclei
Description : 16.5 Octreotide is a long acting synthetic analogue of: A. Prolactin B. Growth hormone C. Somatostatin D. Gonadotropin releasing hormone
Last Answer : D. All of the above
Description : Conversion of formylglycinamide ribosyl5-phosphate to formyl-glycinamide ribosyl-5-phosphate is inhibited by (A) Azaserine (B) Diazonorleucine (C) 6-Mercaptopurine (D) Mycophenolic acid
Description : What do you think of the fact that organ transplantation is not always 100% successful due to not complete compatibility between donor and recipient?
Last Answer : Hmm, one of the after effects, if the transplantation was successful, is not being dead. I think that is always worth it.
Description : Do you believe in organ transplantation?
Last Answer : Yupp, on both questions. When I go, I would love to see my pathetic life finally be of importance to someone else ^^
Description : What is external organ transplantation ?
Last Answer : : External morphology is the branch of biology that deals in detail with the subject of external morphology .
Description : Assertion (A): Organ transplantation patients are given immunosuppressive durgs. Reason (R): Transplanted tissue has antigens which stimulate the spec
Last Answer : Assertion (A): Organ transplantation patients are given immunosuppressive durgs. Reason (R): ... If both the assertion and reason are false
Description : where can we prchase grape grafts for oregon
Last Answer : Need Answer
Description : The following statement(s) is/are true concerning newer detection methods of systemic infection. a. Enzyme-linked immunosorbent assay (ELISA) is a rapid immunologic assay used for ... detected using advanced molecular techniques include cytomegalovirus (CMV) and human immunodeficiency virus (HIV)
Last Answer : Answer: a, b, c, d Although the classic detection of infection based on clinical signs of infection and bacterial culture remain the most common clinical tools, increasing ... including CMV and HIV. Furthermore, preliminary investigations into possible detection of fungal pathogens are underway
Description : Which of the following statements concerning perioperative nutrition is true concerning the above-described patient? a. Since the patient's weight had been stable with no preoperative nutritional deficit ... feeding catheter should be placed at the time of surgery for postoperative enteral feeding
Last Answer : Answer: a Most patients undergoing elective operations are adequately nourished. Unless the patient has suffered significant preoperative malnutrition, characterized by weight loss greater than ... gastrointestinal surgery, this technique would not appear indicated in the patient described above
Description : The following antineoplastic drug is a mitotic inhibitor and causes metaphase arrest: A. Busulfan B. Vincristine C. Cytarabine D. Procarbazine
Last Answer : B. Vincristine
Description : Could your body accept its old organ without anti-rejection medication after it's been in another body?
Last Answer : answer:Yes, I don't think it would have been changed. It does seem highly unlikely though. Transplant rejection is caused by the body's immune response to foreign material. The ... who receive transplants are given transplant rejection medications that reduce the body's immune response. Source
Description : The following anticancer drug has high emetogenic potential: A. Vincristine B. Chlorambucil C. 6-Mercaptopurine D. Cisplatin
Last Answer : D. Cisplatin
Description : RB 1 gene is (A) A tumour suppressor gene (B) Oncogene (C) Proto-oncogene (D) Activated proto-oncogene
Description : P 53 gene: (A) A proto-oncogene (B) An oncogene (C) A tumour suppressor gene (D) None of these
Last Answer : Answer : C
Description : Suppressor tRNAs can neutralize the effects of mutations in (A) Structural genes (B) Promoter regions (C) Enhancer elements(D) All of these
Description : Suppressor mutations occur in (A) Structural genes (B) Promoter regions (C) Silencer elements (D) Anticodons of tRNA
Last Answer : Answer : D
Description : CD 4 is a transmembrane glycoprotein present in (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells
Description : CD 8 is a transmembrane glycoprotein present in (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells
Description : MHC Class II proteins, in conjunction with antigens, are recognised by (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells
Description : MHC class I proteins, in conjunction with antigens are recognised by (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells
Description : The most abundant T cells are (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells
Description : Urine bases with methyl substituents occurring in plants are (A) Caffeine (B) Theophylline (C) Theobromine (D) All of these
Description : Thioguanine differs from mercaptopurine in that: A. It is not metabolized by xanthine oxidase B. It does not cause hyperuricemia C. Its dose need not be reduced when allopurinol is given concurrently D. Both ‘A’ and ‘C’ are correc
Last Answer : D. Both ‘A’ and ‘C’ are correct
Description : All of the following statements about puromycin are true except (A) It is an alanyl tRNA analogue (B) It causes premature termination of protein synthesis (C) It inhibits protein synthesis in prokaryotes (D) It inhibits protein synthesis in eukaryotes
Description : All of the following statements about allopurinol are true except (A) It is a structural analogue of uric acid (B) It can prevent uric acid stones in the kidneys (C) It increases the urinary excretion of xanthine and hypoxanthine (D) It is a competitive inhibitor of xanthine oxidase
Description : Coenzymes are (A) Heat stable, dialyzable, non protein organic molecules (B) Soluble, colloidal, protein molecules (C) Structural analogue of enzymes (D) Different forms of enzymes
Description : Harmonic suppressor connected to an antenna. A. Low-pass filter B. High-pass filter C. M-derived filter D. Constant-K
Last Answer : A. Low-pass filter
Description : Harmonic suppressor connected to an antenna. A. High pass filter B. Low pass filter C. Tank circuit D. M-derived filter
Last Answer : B. Low pass filter
Description : True statements about p53 include: a. a protein coded by a tumour suppressor gene b. it suppresses mitosis c. it is important regulators of apoptosis d. all above
Last Answer : all above
Description : What type of immune cell may control IgE-mediated hypersensitivities? a. Suppressor T cells b. Plasma cells c. Cytotoxic T cells d. Neutrophils
Last Answer : a. Suppressor T cells
Description : Echo suppressor is detrimental to full duplex operation because (A) It disables one of the two pairs in a four-wire trunk line when a signal is detected on the other pair. (B) It enables one of the ... It activates both the pairs of a four-wire trunk line. (D) It is independent of line conditions.
Last Answer : (A) It disables one of the two pairs in a four-wire trunk line when a signal is detected on the other pair.
Description : The suppressor grid is added to a tetrode to reduce what undesirable characteristic of tetrode operation?
Last Answer : Secondary emission.
Description : In many types of cancer, proteins that are crucial regulators of the cell cycle are often mutated and cannot function correctly. This leads to the evasion of apoptosis and to the loss of control of cell ... protein named p53. What is the normal function of p53 that is lost when it is mutated?
Last Answer : Normally, p53 senses DNA damage and acts as a transcription factor for checkpoint control genes.
Description : What are the three elements of a bipolar transistor? Are they the: w) grid, plate, cathode x) suppressor, deflector, target y) energizer, controller, terminus z) emitter, base, collector
Last Answer : ANSWER: Z -- EMITTER, BASE, COLLECTOR
Description : The mechanism of synthesis of DNA and RNA are similar to all the following ways except (A) They involve release of pyrophosphate from each nucleotide added (B) They require activated nucleotide precursor and Mg2+ (C) The direction of synthesis is (D) They require a primer
Description : Which one of the following binds to specific nucleotide sequences that are upstream and most distant from the start site? (A) RNA polymerase (B) Repressor (C) Inducer (D) Restriction
Description : Which one of the following statements correctly describes eukaryotic DNA? (A) They involve release of pyrophosphate from each nucleotide precussor and Mg2+ (B) The direction of synthesis is (C) They require a primer 5’→ 3’ (D) None of these
Description : The mechanism of synthesis of DNA and RNA are similar in all the following ways except (A) They involve release of pyrophosphate from each nucleotide added (B) They require activated nucleotide precursor and Mg2+ (C) The direction of synthesis is 5’ → 3’ (D) They require a primer
Description : Which one of the following binds to specific nucleotide sequences? (A) RNA polymerase (B) Repressor (C) Inducer (D) Restriction
Description : The genetic code operates via (A) The protein moiety of DNA (B) The base sequences of DNA (C) The nucleotide sequence of mRNA (D) The base sequence of tRNA
Description : The genetic code operates through (A) The protein moiety of DNA (B) Cistrom of DNA (C) Nucleotide sequence of m RNA (D) The anticodons of tRNA
Description : The first pyrimidine nucleotide to be formed in de novo synthesis pathway is (A) UMP (B) CMP (C) CTP (D) TMP
Description : The first reaction unique to purine nucleotide synthesis is catalysed by (A) PRPP synthetase (B) PRPP glutamyl amido transferase (C) Phosphoribosyl glycinamide synthetase (D) Formyl transferase
Description : All of the following enzymes are unique to purine nucleotide synthesis except (A) PRPP synthetase (B) PRPP glutamyl amido transferase (C) Adenylosuccinate synthetase (D) IMP dehydrogenase