320Fall09Homework1_key

320Fall09Homework1_key - Cell Biology(BIO 320 Fall 2009 Dr...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Cell Biology (BIO 320), Fall 2009, Dr. Bushart Homework set #1 key 1. Dissolving solid urea in water is an endothermic reaction (+ΔH) yet it still occurs spontaneously at room temperature. a. How would heating the water help this process? Higher temperatures increase the subtracted value of “T Δ S, which needs to be larger than the value of Δ H in order for the reaction to be spontaneous. b. Even at room temperature this process will occur. How can we explain this in terms of the free energy equation? Note that you should be able to answer this without looking up the specific details of how urea dissolves (which does help explain it too). Solid urea is ordered. Dissolved urea is going to be disordered since it is mixed up with water. The change in entropy is therefore favorable even if H is not. 2. Imagine you have located one half of an attractive amino acid side chain pairing important for the function of a protein. a.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/15/2009 for the course ECON 420 K taught by Professor Bronars during the Fall '09 term at University of Texas.

Page1 / 2

320Fall09Homework1_key - Cell Biology(BIO 320 Fall 2009 Dr...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online