Exergonic reactions - Study guides, Class notes & Summaries

Describe the First and Second Laws of Thermodynamics and explain why they are important to the cellular energetics. 1st - energy cannot be created or destroyed, only change forms. • This is important because all living things need a constant energy source (the sun) 2nd - when transforming energy, some is lost as heat (10% between trophic levels) Define endergonic and exergonic reactions and describe how they are linked in cellular energetics. Endergonic - requires energy (hydrolysis; splittin...

What is a metabolic pathway? - ️️A pathway that a molecule goes through, resulting in a specific product. What is metabolism? - ️️The totality of an organisms chemical reactions Gibbs free energy - ️️Portion of a system that can perform work when temp and pressure are uniform throughout the system. What is a way to show change in free energy? - ️️ What does a negative Delta G mean? - ️️A process that is spontaneous What does spontaneous mean? - ️️Means that...

What is a metabolic pathway? - Answer-A pathway that a molecule goes through, resulting in a specific product. What is metabolism? - Answer-The totality of an organisms chemical reactions Gibbs free energy - Answer-Portion of a system that can perform work when temp and pressure are uniform throughout the system. What is a way to show change in free energy? - AnswerWhat does a negative Delta G mean? - Answer-A process that is spontaneous What does spontaneous mean? - Answer-Means that a pr...

reaction catalyzed by glycogen phosphorylase, know structures Correct Answer-a1->4 glycosidic linkage between glucose residues at a nonreducing end of glycogen is cleaved by Pi--> shortens chain by one glucose (n)glucose--> (n-1)glucose + glucose-1-phosphate What is an example of a phosphorolysis reaction? Why is phosphorolysis is more energetically efficient than hydrolysis? Correct Answer-Ex: glycogen phosphorylase shortening a glycogen chain In phosphorolysis some of the e...

UCI Bio 93 Midterm 2 Exam Questions and Answers 100% Pass What is a metabolic pathway? - Correct Answer ️️ -A pathway that a molecule goes through, resulting in a specific product. What is metabolism? - Correct Answer ️️ -The totality of an organisms chemical reactions Gibbs free energy - Correct Answer ️️ -Portion of a system that can perform work when temp and pressure are uniform throughout the system. What is a way to show change in free energy? - Correct Answer ️️ - ...

Which of the following reactions could be driven by coupling to the hydrolysis of ATP? The change in free energy is given in units of kilojoules per mole ATP + H2O → ADP + Pi (-30.5) A. Maltose + H2O → 2 Glucose (-15.5) B. Pyruvate + Pi → Phosphoenolpyruvate (+31.7) C. Glycerol + Pi → Glycerol phosphate (+9.2) correct answer: C The example of water freezing into ice shows A. a decrease in entropy of the system. B. an increase in entropy of the system. C. no change in th...

Chapter 2 - ️️ᕦ(ò_óˇ)ᕤ Factors that regulate enzyme activity: - ️️- temperature - pH - substrate concentration - product inhibition - cofactors (cAMP, AMP, calcium, etc. can either activate or inhibit enzyme activity) Gain of a control system - ️️Degree to which a control system maintains homeostasis; a system with an appropriate gain is more capable of maintaining homeostasis than a system w/ low gain Simple biological control system components - ️️- stimulus - ...

KSU Bio 198 Exam 5 Questions and Answers Already Passed _____ is the main energy currency of the cell. ATP _______ reactions release energy. Exergonic A cell that is placed in an isotonic solution will: A. shrink in size B. increase in size C. neither gain water or lose water D. gain water C The movement of molecules across a membrane that requires the useof carrier molecules and the expenditure of energy is called ______________. active transport Energy cannot be created ...

UCI Bio 93 Midterm 2 Exam Questions and Answers 100% Pass What is a metabolic pathway? - Correct Answer ️️ -A pathway that a molecule goes through, resulting in a specific product. What is metabolism? - Correct Answer ️️ -The totality of an organisms chemical reactions Gibbs free energy - Correct Answer ️️ -Portion of a system that can perform work when temp and pressure are uniform throughout the system. What is a way to show change in free energy? - Correct Answer ️️ - ...

UCI Bio 93 with the Trio Final Review 2024 Questions and Answers 100% Pass Bioengernetics - Correct Answer ️️ -How energy flows through organisms. ATP - Correct Answer ️️ -Used for mechanical, transport, and chemical work. ATP is also an RNA nucleotide. Mechanical Work - Correct Answer ️️ -Energy used in motor proteins and muscle cells during contractions. Transport Work - Correct Answer ️️ -Energy used to move substances against their gradient. Chemical Work - Correct A...