Biology Answers

One of the ingredients present in the venom of Indian spectacled cobra, Naja naja is phospholipase A2(PLA2). We have discussed the site of action of PLA2 in a glycerophospholipid. PLA2 from cobra venom thus degrades the glycerophospholipids present in the cell membrane leading to cell lysis releasing its cytoplasmic contents.

In aqueous solution, almost all D-glucose molecules are in the pyranose form. Other aldoses have a greater proportion of molecules in the open-chain form. D-Glucose may have evolved to be the predominant hexose because it is less likely than its isomers to react with and damage cellular proteins. Explain why D-glucose reacts less than other aldoses with the amino groups of proteins.

In a procedure for testing blood glucose, a drop of blood is placed on a paper strip impregnated with the enzyme glucose oxidase and all the reagents necessary for the reaction.
The H2O2 produced causes a color change on the paper that indicates how much glucose is present. Since glucose oxidase is specific for the beta anomer of glucose and doesn’t act on alpha anomer, in spite of this specificity, the reaction is used in clinical assay for measuring total blood glucose which consists of a mixture of beta D glucose and alpha D glucose. Explain how this assay

The composition of PBS is 0.137M NaCl, 0.012M Phosphate, 0.0027M KCl, pH 7.4. Below is the protocol to make 1 liter of 10x concentrate PBS.
Combine the following:
• 80g NaCl
• 2g KCl
• 14.4g Na2HPO4 (dibasic anhydrous)
• 2.4g KH2PO4 (monobasic anhydrous)
• 800mL distilled H2O

Discuss the impact of microorganisms in the clean-up of oil spills

Write on the multidisciplinary nature of petroleum microbiology in life science and
engineering technology.

Discuss physical soundness in pigs as important characteristics in selection of the breeding stock.

The ultimate thermic environment is mainly a function of ambient temperature, humidity and ventilation. Summarise the essential optimum thermic conditions necessary for the pig house?

The management skill of the pig farmer determines, to a large extent, the profitability of his/her enterprise. Outline what good management entails?