bch 3025 Packaged Exams with Updated Questions and Answers 100% Verified

A nonapeptide was determined to have the following amino acid com position: (Lys)2, (Gly) 2, (Phe) 2, His, Leu, Met. The native peptide was incubated with 1-fluoro-2,4- dinitrobenzene (FDNB) and then hydrolyzed; 2,4-dinitrophenylhistidine was identified by HPLC. When the native peptide was expose...

Which of the following is not required in the synthesis of fatty acids? A) Acetyl-CoA B) Biotin C) HCO3- (CO2) D) Malonyl-CoA E) NADH - Answer-E) NADH Which of the following is not true of the reaction producing malonyl-CoA during fatty acid synthesis? A) It is stimulated by citrate. B) It r...

A good transition-state analog: - Answer-binds to the enzyme more tightly than the substrate A major advance in the application of mass spectrometry to macromolecules came with the development of techniques to overcome which of the following problems? - Answer-Mass spectrometric analysis involved...

3 molecules with high PTP - Answer--phosphoenolpyruvate (PEP -1,3-BPG -creatine phosphate 3 stages of metabolism - Answer-Stage 1:Digestion Stage 2:Acetyl CoA Production Stage 3:Energy Production 7TM - Answer-7 Transmembrane Regions regions present on all G-Protein coupled receptors transmit...

A compound containing N-acetylneuraminic acid (sialic acid) is: A) cardiolipin. B) ganglioside GM2. C) phosphatidylcholine. D) platelet-activating factor. E) sphingomyelin. - Answer-b A convenient cloning vector with which to introduce foreign DNA into E. coli is a(n): A) E. coli chromosome. ...

2,4-Dinitrophenol and oligomycin inhibit mitochondrial oxidative phosphorylation. 2,4-Dinitrophenol is an uncoupling agent; oligomycin blocks the ATP synthesis reaction itself. Therefore, 2,4-dinitrophenol will: A) allow electron transfer in the presence of oligomycin. B) allow oxidative phospho...

A common cloning strategy for introducing foreign genes into plants with Agrobacterium employs all the following features except: A) a selectable antibiotic marker such as kanamycin resistance. B) a shuttle vector with 25 bp T-DNA repeats flanking the foreign gene of choice. C) a Ti plasmid lack...

A good transition-state analog: A) binds covalently to the enzyme. B) binds to the enzyme more tightly than the substrate. C) binds very weakly to the enzyme. D) is too unstable to isolate. E) must be almost identical to the substrate. - Answer-binds to the enzyme more tightly than the substra...