You are working in a field hospital as a volunteer in Congo

You are working in a field hospital as a volunteer in Congo. Several people have been brought into the hospital suffering from severe dehydration due to diarrhea and vomiting, symptoms of the recently identified Congongo virus. While the clinic has ample water and water sterilizing equipment on hand, there are no bags of normal saline available. The attending physician asks you to graph the bag of NaCl on the counter and add water to make normal saline saline (154mM NaCl, FW=58.44g/mole). How much water do you add to the 1.8g in the bag to reconstitute the normal saline? 50ml 100ml 200ml 27.6ml 1 Liter Many vitamins are precursors of co-enzymes These water soluble molecules which include B vitamins, C vitamins, folic acid, biotin, pantothenic acid are needed for some metabolic reactions to take place and are not needed in large amounts since their function is to: Alter the enzyme\'s binding site similar to organic cofactors. Bind and transport atoms or functional groups that are removed from substrates during a reaction. Inhibit bio-molecular synthesis in energy producing pathways. Regulate the local concentrations ligands. Redirect the activity a protein to the endosomes. If a cell bas adequate oxygen, 8 molecules of NADH and 2 molecules of FADH2 are made during the catabolism of one molecule of glucose. Since only 4 molecules of NADH and 2 molecules of FADH2 are made per citric acid cycle, why are a these numbers doubled when we calculate the total yield from the one molecule of glucose? The citric acid cycle makes a never-ending cycle The 2-carbon acyl unit of acetyl CoA is regenerated from Oxaloacetate and recycles to go through a second round. During glycolysis Fructose 1, 6 bisphosphate is cleaved to produce 2 moles of dihydroxyacetone phosphate For each molecule of Glucose 6 phosphate carbons are shuttled to the glycolytic cycle and 4 are shuttled to the citric acid cycle. IgA excretion into the lumen of the gut is an example of which of the following? Epigenetic regulation Intestinal inflammation Paracellular transport Transcellular transport Transendothelial vascularization In class, we discussed multiple modes of vesicular transport. In one case, bacteria, opsonized with ___, which promotes adhesion via ___ was required to allow uptake. Patients who lack this combination of molecules end up with recurrent bacterial infections; impaired pus formation and wound healing. Amoeba/actin Basal Lamina/collagen C3bi/beta 2 integrins Complement/gap junctions Opionate/desmosomes

Solution

Answer:

33. (c) 200 mL

For 1M,

58.44 gm of NaCl in 1000 mL water

So, for 1000mM, we require 58.44 gm

For, 154mM, we require (58.44 * 154) / 1000 = 8.999 gm = 9 gm

Therefore, 9 gm in 1000 mL gives 154 mM

To obtain a concentration of 154 mM, we need to dissolve 1.8 gm in (1000 * 1.8) / 9 = 200 mL