Proteasome - Study guides, Class notes & Summaries

AAMC MCAT Practice Exam 2 Questions and Answers 2024 C/P: What expression gives the amount of light energy (in J per photon) that is converted to other forms between the fluorescence excitation and emission events? "intensity of fluorescence emission at 440 nm excitation at 360 nm) was monitored for 20 minutes" A) (6.62 × 10-34) × (3.0 × 108) B) (6.62 × 10-34) × (3.0 × 108) × (360 × 10-9) C) (6.62 × 10-34) × (3.0 × 108) × [1 / (360 × 10-9) - 1 / (440 × 10-9)] D) (6.62 × 10...

1. Which statement regarding the sodium-potassium pump is correct? 1. The cell’s plasma membrane is more soluble to sodium ions than potassium ions. 2. The concentration of sodium ions should be higher inside the cell compartment. 3. The concentration of potassium ions should be higher outside the cell compartment. 4. The active transport involves pumping out three sodium ions and pumping in two potassium ions. 2. What is the process in which glucose is used to create energy? 1. Autol...

Which of the following is not a secondary lymphoid organ? a. Spleen b. Thymus c. Lymph nodes d. Liver e. Tonsils - Answer- b. Thymus Which of the following is not a secondary lymphoid organ? a. Spleen b. Thymus c. Lymph nodes d. Liver e. Tonsils - Answer- d. Liver Opsonization is a term to describe what? a. Lysis of bacteria b. Coating of bacteria c. Ingestion of bacteria d. Killing of bacteria e. Phagocytosis - Answer- b. Coating of bacteria Which of the following does n...

Equation of how Enzymes function in reaction Substrate(s) + Enzyme = Product(s) + Enzyme What is the optimal temperature for most enzymes to work at? 37 degrees Celsius What happens when temperature is too high for an enzyme? Enzymes can unfold and lose their 3D shape. What pH do cytosolic enzymes operate best at? neutral, around 7.2. (the pH of human cells) How can competitive inhibition be overcome? increasing substrate concentration What direction does actin spin when ATP is being produc...

Question 1 2.5 / 2.5 pts Indicate whether each of the following descriptions better applies to COPI- (1), COPII- (2), or clathrin- (3) coated vesicles. Your answer would be a four-digit number composed of digits 1 to 3 only, e.g. 1322. ( ) They mediate transport from the ER to the cis Golgi network. ( ) Their coat protein forms a three-legged structure called a triskelion. ( ) They are pinched off from their donor compartment by a dynamin collar. ( ) They are involved in retrograde trans...

Question 1. For CD8+ T lymphocytes to recognize virally infected cells, the infected cells must — A. express functional HLA-DM molecules. B. express functional transporter associated with antigen presentation (TAP) 1 and 2 proteins. C. have trafficked through a germinal center. D. extinguish expression of its class I HLA molecules. correct answer: 1. Answer: B Explanation: In virus-infected cells, some viral proteins are degraded in the cellular proteasome, the major cellular protein de...

19S - regulatory particle of proteasome 2 Categories of Epigenetics - DNA methylatioin and histone modification 20S - core particle of proteasome 26S proteasome - inhibited in sporadic parkinsonism 3 groups of Bcl-2 family proteins - 1. Group I - Anti-apoptitic 2. Group II - Inducers 3. Group III - Potentiate 3 key molecules of apoptosis - 1. Bcl-2 family proteins 2. Apaf-1 3. caspases 3 metabolic pathways that regulate aging - 1. Dietary restrictions 2. Insulin/Insulin-like Growth Fa...

Test Bank - Lehninger Principles of Biochemistry 8th Edition by David L. Nelson - Complete, Elaborated and Latest Test Bank. ALL Chapters (1-82) Included and Updated #BiochemistryFoundations #ProteinStructure #EnzymeFunction #NucleicAcids #LipidsAndMembranes #MetabolismIntro #Glycolysis #CitricAcidCycle #OxidativePhosphorylation #Photosynthesis #AminoAcidBiosynthesis #GeneExpression #BiochemistryTestBank #Bioenergetics #BiochemicalSignaling Chapter: 1. The Foundations of...

NBME 30| 144 Questions All Answered Correctly 56 y/o F comes to physician 3 wk hx increasing weakness of arms and legs. - Smoking - Weakness of hip girdle muscles, lesser weakness of shoulder girdle muscles. - Weakness improves with repetitive testing. - Hilar lung mass What's impaired: - Acetylocholinesterase - Binding of ACh on postsynaptic membrane - Direct depolarization of muscle by Ca - Postsynaptic membrane potential - Presynaptic release of ACh Presynaptic release of ...

bio 150 final exam Correct Questions & Answeheat is a form of? a. kinetic tial c. activation d. catalytic - ANSWER a. kinetic An alpha helix is a type of protein_________ structure? a. primary b. seconday c. tertiary d. quartenary - ANSWER b. secondary the cytoplasmic granule of RNA and protein that reads mRNA and synthesizes proteins is called the _________, an organelle that is not bound by a membrane? a. kinetechore b. Golgi complex c. ribosome d. nucleolus - ANSWER c. r...