TAMU BICH 411 - Exam 1 Study Guide (6 pages)

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Exam 1 Study Guide



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Exam 1 Study Guide

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A review of the material learned in class for exam 1.


Pages:
6
Type:
Study Guide
School:
Texas A&M University
Course:
Bich 411 - Comprehen Biochem Ii
Edition:
1

Unformatted text preview:

BICH 411 1nd Edition Exam 1 Study Guide Lectures 1 5 Lecture 1 September 2 Relate metabolism intermediary metabolism and metabolites Metabolites are the intermediates and products of metabolism which cells use to create energy often through formation of ATP Intermediary metabolism is a type of metabolism that involves small metabolites What s the difference between catabolic and anabolic metabolism Catabolism breaks down molecules and releases energy Anabolism builds molecules and uses energy What s the difference between regulation and control Regulation maintains conditions while control is the ability to actively make changes Define all the trophs chemotrophs photoheterotrophs etc Chemotrophs and phototrophs differ based on energy source Organotrophs and Lithotrophs differ on where they get their electrons Heterotrophs and autotrophs differ based on their carbon sources What is the first law of thermodynamics Energy is neither created nor destroyed G H T S G represents useful energy known as Gibb s free energy H or enthalpy is the total energy S is entropy which represents unavailable energy What is the second law of thermodynamics The entropy of the universe is always increasing Reversible processes generally have G values State functions are independent of path G represents the free energy under standard conditions 298 K 1 atm 1M of each reactant and product if a biochemical reaction G it s also at pH 7 and water concentration of 55 5 M G represents the free energy under standard conditions pH 7 G is the free energy with steady state conditions This can be intracellular G G RTlnKeq R is the gas constant 8 314 J mol K At equilibrium G RTlnKeq G s in sequential reactions can be added for a total G Lecture 2 September 4 What are redox reactions Redox reactions are reactions involving the movement of electrons which reduces or oxidizes molecules OIL RIG is helpful in keeping the two straight oxidation is losing electrons Reduction is gaining electrons The flow of



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