Biological substrate Samenvattingen, Aantekeningen en Examens

CHEM 441A FINAL EXAM QUESTIONS WITH COMPLETE SOLUTIONS. Instructions: 1. DO NOT begin the exam until instructed to do so. 2. SWITCH OFF your phones. 3. Make sure there is a total of 12 pages. 4. Write your Name AND Exam number (A or B) on your Scantron. 5. When finished, place Exam sheet and Scantron and return all materials to the instructor. Summary of points: 1. Answer on Scantron Section A (Q# 1….60) (60 Points) 2. Answer on the Exam Sheet Section B, C, and D (Q# 61-90) (40 Points...

Chapter 03 Testbank Student: ___________________________________________________________________________ 1. In biological systems, energy can be stored as A. potential energy. B. kinetic energy. C. heat. D. mechanical energy. E. All of the answers are correct. 2. According to the first and second laws of thermodynamics A. energy flows spontaneously from systems with high free energy to systems with low free energy in a series of step-by- step transformations. B. the quantity of energy i...

Sustainable correct answer: management of natural resources and the environment with goals of allowing the harvest of resources to remain at or above a specified level, ecosystem retains its functions and structure Unsustainable correct answer: a system that cannot grow or survive on its own, is not renewed overtime so it cannot continue any longer. Biogeochemical Cycling correct answer: The flow of chemical elements and compounds between living organisms and the 4 major physical reserv...

Bio 101 REAL Exam 2 QUESTIONS WITH VERIFIED ANSWER |ALREADY PASSED ATP hydrolysis is a. endergonic. b. exergonic. c. chemoautotrophic. d. None of the above - ANSWER exergonic. Enzymes are biological catalysts and function by a. increasing free energy in a system. b. lowering activation energy of a reaction. c. lowering entropy in a system. d. increasing temperature near a reaction. - ANSWER lowering activation energy of a reaction. Which of the following contribute to the speci...

Both are purines - ANSWER Which is true regarding adenine and guanine? Adenine is a purine and guanine is a pyrimidine Both are pyrimidines Adenine is a pyrimidine and guanine is a purine Both are purines Metabolism - ANSWER The combination of all reactions (catabolic + anabolic) within a cell is termed______ Enzymes - ANSWER ___ is a biological catalyst catalyst - ANSWER An enzyme acts as a ____ that alters the rate of a reaction without being changed by the reaction. activation...

IB Biology SL Latest Update Graded A+ Organic compound A compound that contains carbon found in living organisms, excluding carbonates and oxides Enzyme Biological catalysts made of protein that speed up the rate of a reaction Active site The region of an enzyme where the substrate binds Denaturation A structural change in the 3-D shape of a protein causing the loss of its chemical properties Cell respiration The controlled release of enrgy from organic compiunds in cells to for...

Describe the steps of the scientific method - ANSWER -Observation: Use all 5 senses to see whats going on. -Hypothesis: Make an educated guess about how something works. -Prediction: Assume hypothesis is correct and predict the results. If... then... -Experiment: Test your prediction -Analysis and conclusion: Gather results and evaluate hypothesis Explain the parts of a scientific paper - ANSWER -Title -Abstract: 1 paragraph on what you did, why it's important, and results. -Introducti...

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...

Bio 101 REAL Exam 2 QUESTIONS WITH VERIFIED ANSWER |ALREADY PASSED ATP hydrolysis is a. endergonic. b. exergonic. c. chemoautotrophic. d. None of the above - ANSWER exergonic. Enzymes are biological catalysts and function by a. increasing free energy in a system. b. lowering activation energy of a reaction. c. lowering entropy in a system. d. increasing temperature near a reaction. - ANSWER lowering activation energy of a reaction. Which of the following contribute to the speci...

Biology – Enzymes Questions and Answers 100% Correct Define Enzymes Enzyme is a *biological catalyst*, which is *protein* in nature, and can *speed up the rate of a chemical reaction, without it being chemically changed* at the end of the reaction. How do enzymes work? Enzymes work by *lowering the activation energy* of a reaction. Activation energy is the *minimum amount of energy* that reactants must absorb to become activated to start a chemical reaction Properties of an enzyme (7) - Most...