Match the nitrogenous bases in Group I with their corresponding chemical names in Group II.

Group I	Group II
P. Adenine	1. 2-Amino-6-oxypurine
Q. guanine	2. 6-Aminopurine
R. cytosine	3. 4-aminopyridine-2(1H)-one
S. thymine	4. 5-methyluracil
T. Uracil	5. 2, 4-Dioxypyrimidine

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#Question id: 17072

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Plastic Film, Teflon (fluoroethylenepropylene copolymer) is biologically inert and are extensively used for monolayer and suspension cultures as thry are

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#Question id: 17073

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Hypoxanthine is converted into guanine by the enzyme HGPRT an enzymes of the salvage pathway. What does HGPRT stands for?

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#Question id: 17074

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What are some disadvantages of monoclonal antibody production?

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#Question id: 17075

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What are the disadvantages of using polyclonal antibodies?

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#Question id: 17076

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The various advantages of serum-free media could be

1. Improved reproducibility of results from different laboratories

2. Easier downstream processing of products from cultured cells

3. Biassays are free from interference due to serum proteins

4. They permit selective culture of diffrentiated cell types from the heterogeneous cultures

Which of the statements are true?

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#Question id: 17077

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Cells lacking Thymidine kinase if introduced into HAT medium which pathways will continue for nucleotide synthesis