Bch 400 exam Study guides, Class notes & Summaries

BCH 400 Exam Questions & Answers 2023/2024 Which of the following does not occur in the nucleus of eukaryotic cells? a.) Replication b.) Transcription c.) Translation - ANSWER-c.) Translation Which of the following organelles is surrounded by two membranes? a.) Nucleus b.) Mitochondria c.) Chloroplast d.) All of the above - ANSWER-d.) All of the Above Function of Rough Endoplasmic Reticulum? - ANSWER-Protein Synthesis Function of Mitochondria? - ANSWER-ATP Production Fu...

BCH 400 Exam Questions & Answers 2023/2024 The glycogen debranching enzyme carries out a hydrolysis reaction resulting in the formation of - ANSWER-glucose What is the final product of glycogen breakdown in the muscle? - ANSWER-Glucose-6-phosphate Phosphorylation of a serine residue stabilizes the T state of this enzyme - ANSWER-Glycogen synthase Glycogen breakdown in the muscle can be stimulated by: - ANSWER-Epinephrine The glycerol phosphate shuttle in muscle transfers electrons...

BCH 400 Final Exam Questions & Answers 2023/2024 Threonine - ANSWER-Can undergo post translational modification Arginine - ANSWER-Has a net positive charge of ph 7 Cysteine - ANSWER-Can form covalent bonds in proteins Glycine - ANSWER-is not chiral Why do we call some amino acids essential? - ANSWER-Humans are unable to synthesize them What is the pI of Alanine? pKa1 = 2.34 pKa2 = 9.69 - ANSWER-Between 6.01 and 6.02 Which of the 4 types of non-covalent interactions between...

BCH 400: Exam Questions & Answers 2023/2024 Enzyme cofactors that bind covalently at the active site of an enzyme are referred to as _________. - ANSWER-prosthetic groups. Which of the following kinetic parameters best describes how well suited a specific compound functions as a substrate for a particular enzyme? - ANSWER-kcat/Km Which of the following is characteristic of an enzyme catalyst? - ANSWER-It positions reactants in the correct orientation. It lowers the activation energy ba...

BCH 400 Final 1 Study Guide Exam Questions & Answers 2023/2024 What occurs when CO2 enters the blood? Hint, see this link (it might be slow to respond). But the problem can be answered based on lecture notes and deductive reasoning [HCO3-] increases the pH of the blood increases the pKa of the blood decreases [H3O+] in the blood decreases - ANSWER-[HCO3-] increases If a water solution has a [OH-] concentration of 1 X 10-9, the pH would likely be: 6 4 7 5 8 - ANSWER-5 ...

BCH 400 Final Exam Questions & Answers 2023/2024 The main difference between a catalyzed and an uncatalyzed reaction is that __? - ANSWER-The activation energy of the catalyzed reaction is lower For a solution of Tyrosine (Y), what percentage of the R groups would have a deprotonated hydroxyl at pH=10.5 (i.e., = O- rather than OH) - ANSWER-50% At which of the following pHs would His buffer best? - ANSWER-6 For a solution of Lys (K), at what pH would the net charge = 0? - ANSWER-(9.1 ...

BCH 400 Exam Questions & Answers 2023/2024 How do uncoupling agents like DNP affect the electron transport chain and the activity of the F0F1 ATP synthase? a. They provide an alternative path for protons to re-enter the mitochondrial matrix, so ATP synthesis decreases. Electron flow and proton pumping are not inhibited. b. They block the flow of electrons, so protons aren't pumped, and ATP synthesis ceases. c. They remove e-s from the chain, so less protons are pumped, and ATP synthesis...

BCH 400 Exam Questions & Answers 2023/2024 Which of the following is NOT TRUE concerning polyclonal antibodies - ANSWER-They are produced by cells which are essentially immortal ELISA assays can be used to detect both antibodies to a pathogen and proteins from the pathogen - ANSWER-True Which of the following is NOT TRUE concerning monoclonal antibodies - ANSWER-They will give a higher rate of false positives than polyclonal antibodies Which of the following is true concerning Oxygen...

BCH 400 - Chapter 13 end exam questions & answers 2023/2024 What are the 3 major classes of membrane receptors? - ANSWER-1. G-protein coupled (seven-transmembrane-helix) receptors. 2. Receptors that dimerize on ligand binding and recruit tyrosine kinases. 3. Receptors that dimerize on ligand binding that are tyrosine kinases (receptor tyrosine kinases). Explain how a small number of hormones binding to the extracellular surface of the cell can have a large biochemical effect inside the c...