21351. A selective IgA deficiency would be expected to result in problems with
21352. Combined cellular and humoral immune deficiencies result from lack of all of the following except
21353. An example of an immunodeficiency disorder is
21354. Bone marrow given to an infant with SCID must
21355. X-linked hyper IgM syndrome, resulting in high levels of serum IgM and low levels of serum IgG, is caused by a defect in CD40L expression. The specific immune event that would be prevented by a defective CD40L would be
21356. DiGeorge's syndrome is characterized by the lack of a thymus The mouse model closest to this human disease would be a
21357. Which of the Rous sarcoma virus has a homologous cellular protein?
21358. Infants are most susceptible to bacterial infection due to low circulating levels of IgG
21359. The chemical, typically released by the body in an allergic response is
21360. The HIV virus infects primarily
21361. Chronic granulomatous disease results from a failure to perform oxidative burst. This deficiency would be most likely to interfere with
21362. Difficulties with somatic gene therapy arise from all of the following except
21363. A monoclonal antibody (mAb) specific for the 2,4-dinitrophenyl (DNP) hapten might also bind
21364. Retinoblastoma is due to a mutation in a
21365. Magic Johnson is associated with ———
21366. The State bird of Kerala is:
21367. The country that awards Nobel Prize is
21368. A heerarchical listing of heading within a document is called :
21369. Pasteurization is a process of
21370. Taylor, Woods and Hughes labeled Vicia DNA by allowing new DNA synthesis in the presence of radioactive thymine. After DNA replication (S phase of the cell cycle), it was observed that
21371. In DNA double helix, the two DNA chains are held together by
21372. The 5' and 3' numbers are related to the
21373. Messelsen and Stahl model of replication was called
21374. The most common liquid volumes in molecular biology are measured in
21375. DNA replication takes place in which direction?
21376. DNA gyrase in E. coli
21377. In DNA, there are
21378. In DNA, guanine pairs with
21379. What was the conseuqnce of the ‘Battle of Plassey’ ?
21380. What is the only common methylation in the DNA of eukaryotes?
21381. DNAs when charged, migrate in a gel towards the
21382. What is the approximate size (in kb) of the E. coli genome?
21383. In the study of one experiment it was found that the value of Tm for DNA is = 40° C. If the cell has 20% GC at the above Tm, then what will be value of 'Tm' if the GC% increases to 60%?
21384. What is the range of melting point temperatures (Tm) for most DNA molecules?
21385. The overall conclusion of the Hershey-Chase experiment was that
21386. A cesium chloride will separate DNA molecules by
21387. If one cell has AT contents 40%, what will be the percentage of Guanine residue?
21388. Which of the following enzyme adds complementary bases during replication?
21389. Which DNA polymerase removes RNA primers in DNA synthesis?
21390. Enzymes, responsible for unraveling short segments of DNA is
21391. Enzyme, responsible for proofreading base pairing is
21392. Which of the following would not contain DNA?
21393. The nucleosome consists of histone
21394. What bands will be observed in a cesium chloride gradient after two rounds of replication?
21395. Proteins involved in opening a replication bubble are
21396. What is the main damaging effect of UV radiation on DNA?
21397. The higher order structure of DNA shows symmetry, whereas the higher order structures of most proteins do not. Why isn't protein shape more regular like DNA?
21398. DNA helicase is used to
21399. Klenow fragment without free nucleotides exhibits
21400. In sperm heads, DNA is particularly highly condensed and the histones are replaced with small basic protein called
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