BCH 451

BCH 451 FINAL EXAM (EXTRA STUFF) QUESTIONS AND ANSWERS WITH VERIFIED SOLUTIONS Isoelectric Point pH at which molecule has a charge of 0 Van Der Waals Potential Energy Function deltaG = (-rij^-6 +rij^-12)/D Hydrogen Bonding 10,12 Potential Energy Function deltaG = (-rij^-10 + rij^-12)/D Ketamine single bond tautomer of peptide bond Enamine double bond tautomer of peptide bond Positive Cooperativity Hb oxygen bonding when Ka2 > Ka1 Little Cooperativity Hb oxygen bonding when Ka3 ~...

NCSU BCH 451 EXAM 2 STUDY QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE 2024/2025 Average Blood Glucose level in humans 60-150 mg/dL How any cell in the body can use Glucose for energy Cellular respiration Glycolisis the breakdown of glucose by enzymes, releasing energy and pyruvic acid Overview of Glucose to ATP in cells glycolysis > Krebs cycle > eletron transport chain (atp) Fed State High glucose levels after a meal; cells can use glucose in blood for...

BCH 451 FINAL EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE (1) Which of the following is true? a. For a reaction with a negative delta G Keq is less than 1. b. ATP can activate another molecule by transferring a Pi group to the target. c. Enzymes increase the rate of reactions through lowering delta G0. d. The driving force of the hydrophobic effect is attraction between hydrophobic molecules. b. ATP can activate another molecule by transferring a Pi group to...

BCH 451 TEST 1 EXAM QUESTIONS WITH WELL VERIFIED ANSWERS 2024/2025 What are the 4 building blocks of biochemistry? -sugars (monosaccharides) -lipids (fatty acids) -amino acids -nucleotides What are structural isomers? same atoms but different order of bonding; different properties What are stereoisomers? What are the 2 types? molecules with same chemical bonds but different configuration and different properties -enantiomers and diastereomers What is an enantiomer? mirror image of mo...

BCH 451 TEST 1 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A++ Ethanol and polarity -Ethanol: hydroxyl and ethyl functional groups (the ethyl group is sometimes divided into separate methyl and methylene components) -Functional groups: molecular components that serve as tools within chemical reactions -Polar functional groups: hydrophilic due to its ability to freely and spontaneously associate with water (hydroxyl) -nonpolar functional groups: hydrophobic due...

BCH 451 TEST 2 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED Oxidoreductases catalyze reactions involving redox change Transferase A-X + B <--> B-X + A Hydrolase break bond by adding water lyase adding a molecule to double bond without breaking it isomerase one reactant --> one product Ligase requires atp to drive reaction [s] concentration of substrate Vmax maximum velocity of reaction Km Substrate concentration at 1/2 Vmax Does velocity of reaction e...

BCH451 EXAM 3 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED pyruvate carboxylase converts pyruvate to oxaloacetate via carboxylation requires Acetyl CoA as a positive effector first step in gluconeogenesis lactate to pyruvate fermentation by lactate dehydrogenase converts lactate to pyruvate, yielding NADH export of reducing equivalents (malate) unnecessary makes use of lactate produced by glycolysis in erythrocytes or anaerobic muscle Fructose-1,6-bisphosphatase conve...

BCH 451 EXAM 3 REVIEW QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED What does the Citric Acid Cycle do? The citric acid cycle fully oxidizes acetyl-CoA to CO2, producing NADH, FADH2, and GTP, which contribute to ATP synthesis during oxidative phosphorylation. Location of Citric Acid Cycle The citric acid cycle occurs in the mitochondrial matrix, except for succinate dehydrogenase, which is located in the inner mitochondrial membrane. Which enzyme catalyzes the condensation of acety...

BCH 451 EXAM 2 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED What does an Allosteric Effector do? Changes the conformation of an enzyme, from an "r" to an "s" state or vice versa. Most allsoteric effectors are positive(activator) or negative(inhibitor) modulators? negative(inhibitor) What does a sigmoidal curve tell the reader? The cooperative interaction between subunits. What covalent modifications effect Lysine? Lysine has the most modification options. These incl...

EXAM 2 BCH 451 QUESTIONS AND VERIFIED CORRECT ANSWERS 100% PASS hemoglobin binds and transports oxygen from lungs to the tissues inside red blood cells tetrameric quaternary structure - four reversible O2 binding pockets each containing heme group - central cavity contains 6 positively charged side chains; N-terminal amino acid group of each beta chain forms cationic binding site 4 globins + 4 hemes = __________________ binds to O2 via the chelated iron of the heme group lower affini...