The H-precursor of ABO blood group system consists of proteins on to which sugar moles not present in the H-precursor of O-antigen Fucose N-acetyl glucosamine Galactose N-acetyl galactosamine O
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- Define the following terms:a. prenylationb. steroidc. digitalisd. lipoproteine. apolipoproteinYou can choose one or more than one option Arginase is an enzyme that: is expressed in the cytoplasm of hepatocytes shows two isoenzymes in mammals. found in the liver and other tissues catalyzes the formation of urea and ornithine from arginine. induces hyperammonemia when it is overexpressed is inhibited by basic amino acids such as lysine and ornithine.You can choose one or more than one options Arginase is an enzyme that : BIOCHEMISTRY advanced is expressed in the cytoplasm of hepatocytes shows two isoenzymes in mammals. found in the liver and other tissues catalyzes the formation of urea and ornithine from arginine. induces hyperammonemia when it is overexpressed is inhibited by basic amino acids such as lysine and ornithine.
- The distal histidine stabilises the iron in heme group of a deoxyhaemoglobin. T/FWhen taken in appropriate amounts, vitamin E protectsthe body from ROS. However, when it is taken in excessiveamounts vitamin E can potentially make the body moresusceptible to ROS. Explain.A fixed amount of radiolabelled insulin was incubated with a fixed amount of anti-insulin antibody, the bound ligand was separated from free ligand at different time intervals. Draw a diagram of the concentration of the insulin/antibody complex with time. (Insulin/antibody complex is the bound ligand) asap typed only .
- Coenzyme Q-10 (Ubiquinone) is one of the most important and crucial substances within the human body. The heart muscle normally has very high levels of CoQ-10, and when these levels drop by 75%, it will stop pumping. When CoQ-10 (Ubiquinone) levels drop by 25% within the body, diseases usually occur. Why does this happen?A female neonate did well until approximately 24 hours of age when she became lethargic. A sepsis workup proved negative. At 56 hours, she started showing focal seizure activity. The plasma ammonia level was found to be 1,100 μmol/L (normal 5–35 μmol/L). Quantitative plasma amino acid levels revealed a marked elevation of argininosuccinate.19.3 Which one of the following enzymic activities is most likely to be deficient in this patient? EXPLAIN your answerA. Arginase.B. Argininosuccinate lyase.C. Argininosuccinate synthase.D. Carbamoyl phosphate synthetase I.E. Ornithine transcarbamoylase.A mutation in the alpha subunit of the G protein prevents it from binding to the adenylyl cyclase but not the recpetor. The amount of cAMP in cells will 1. stay the same 2. decrease 3. increase
- A defect in which of the following enzymes leads to Tay- Sachs disease? O Phospholipase CO a-galactosidase A O Hexosamidase A O SphingomyelinaseHDL-R: HDLs carry cholesterol to the liver for elimination. Liver cells respond to estrogen to express a protein receptor for HDLs coded by the HDL-R gene (HDL-R gene contains an estrogen response element.) PFK: codes for an enzyme called phosphofructokinase that is used in the first steps of breaking down glucose for energy in all cells. (Gene has no estrogen response element.) CD3: codes for a cell surface protein produced by immune B cells (Gene has no estrogen response element)mRNA transcripts can be collected from cells, made to glow with a fluorescent dye, and added to a microarray chip containing spots with DNA sequences from each of these genes. (In the depiction of the microarrays below ○ indicates no binding of the mRNA, and ● indicates binding.)Which of the gene expression patterns would you expect to see if you used mRNA from immune B cells to add to the microarray?What qualitative effect would you expect each of the following to have onthe P50 of hemoglobin?(a) Increase in pH from 7.2 to 7.4(b) Increase in PCO2 from 20 to 40 mm Hg(c) Dissociation into monomer polypeptide chains(d) Decrease in 2,3-BPG concentration from 7 mM to 5 mM in red cells.