Allosteric regulation - Study guides, Class notes & Summaries

1. Which of the following does not contribute to the regulation of enzymatic activity? A) Protein phosphorylation B) Allosteric regulation C) Protein stability D) mRNA stability E) DNA stability - E 2. For an enzyme to effectively change its activity in response to a change in substrate concentration, it is most favorable for: A) Km to be less than cellular substrate concentrations. B) Km to be equal to cellular substrate concentrations. C) Km to be greater than cellular substrate conc...

Succinate is a substrate for which complex in the electron transport chain? a.) Complex 1 (NADH-1 oxidoreductase) b.) Complex IV (Cyt c oxidase) c.) Complex V (ATP synthase) d.) complex II (Succinate-Q reductase) Complex II (succinate-Q reductase) (D) Which of the following would be consistent with an exergonic reaction? a.) ∆S would be negative b.) ∆G would be negative c.) ∆S would be positive d.)∆G would be positive ∆G would be negative (B) Whi...

C&P Test 3 The hemoglobin (Hb) dissociation curve at high altitude has a distinct shape from that at atmospheric pressure. Which of the following best explains this shape? A. Dissolved oxygen in the blood serves to increase pH. B. The primary structure of Hb is changed by oxygen binding. C. Dissolved oxygen forms a chain of atoms that is easier for Hb to bind. D. Homotropic regulation by oxygen occurs. - ANSWER-D. Homotropic regulation by oxygen occurs. D is correct. The sig...

Under low energy conditions, AMP will bind to phosphofructokinase I and glycogen phosphorylase at site unique to the active site. This enhances the activity of these enzymes. This is an example of which of the follow types of enzyme regulation? correct answer: Allosteric activation An example of enzyme activation by cleavage is best illustrated by which of the following? correct answer: Activation of chymotrypsinogen to chymotrypsin Children with cystinosis have growth delay and both ren...

FRNSC 420 - EXAM 4 PRACTICE QUESTIONS AND ANSWERS (100% PASS) positive allosteric regulation - Answer️️ -binding of a regulatory molecule to an enzyme induces a conformation change, increasing the enzyme's affinity for a substrate - proteins are activators = enhance RNAP binding and/or induce conformational change, can change binding constant (KB) or rate constant (kf), lowers activation energies negative allosteric regulation - Answer️️ -bound regulatory molecule must release ...

UNE Biochemistry Midterm Study Bank Succinate is a substrate for which complex in the electron transport chain? a.) Complex 1 (NADH-1 oxidoreductase) b.) Complex IV (Cyt c oxidase) c.) Complex V (ATP synthase) d.) complex II (Succinate-Q reductase) Complex II (succinate-Q reductase) (D) Which of the following would be consistent with an exergonic reaction? a.) ∆S would be negative b.) ∆G would be negative c.) ∆S would be positive d.)∆G would be positive ∆G...

Succinate is a substrate for which complex in the electron transport chain? a.) Complex 1 (NADH-1 oxidoreductase) b.) Complex IV (Cyt c oxidase) c.) Complex V (ATP synthase) d.) complex II (Succinate-Q reductase) Complex II (succinate-Q reductase) (D) Which of the following would be consistent with an exergonic reaction? a.) ∆S would be negative b.) ∆G would be negative c.) ∆S would be positive d.)∆G would be positive ∆G would be negative (B) Whi...

active transport movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration—against the concentration gradient. Active transport requires cellular energy to achieve this movement. passive transport Requires NO energy, movement of molecules from high to low concentration, moves with the concentration gradient covalent bond A chemical bond that involves sharing a pair of electrons between atoms in a molecule ionic bond Linkage for...

UNE Biochemistry Midterm Study Bank, UNE Biochem Midterm Questions & Answers Solved 100% Correct!! Succinate is a substrate for which complex in the electron transport chain? a.) Complex 1 (NADH-1 oxidoreductase) b.) Complex IV (Cyt c oxidase) c.) Complex V (ATP synthase) d.) complex II (Succinate-Q reductase) Complex II (succinate-Q reductase) (D) Which of the following would be consistent with an exergonic reaction? a.) ∆S would be negative b.) ∆G would be negative ...