Discussion Section Assignment, Week of Oct 11

Discussion Section Assignment, Week of Oct 11 - second....

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

View Full Document Right Arrow Icon
NAME: UTEID: CLASS/DISC. TIME: BIO 311C: Introductory Biology Due in discussion section, Week of October 11 1) Nerve Growth Factor is a water soluble signalling molecule. Would you expect the receptor for NGF to be intracellular or membrane bound? Why? Intracellular because it is a nonpolar molecule cytosol is water soluble, so the receptor for NGF would be intracellular instead of membrane bound. 2) Why don’t all spontaneous reactions occur instantly? To increase the rate of reactions you need to provide physical conditions such as temperature, pressure or number of molecules. All these are not possible in a living system. But organisms have enzyme that catlyses the reactons and make it very quick. Acetylcholinesterase that cleave acetylcholine is one of the fastest enzymes involved in relaxation of muscle cells within a fraction of 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
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: second. Where there is no enzymes there reactions are sponateous and slow. E.g. Water and carbondioxide combine to form carbonic acid in blood which is slow. In the blood cells there is carbonic anhydrase and the reaction is very fast, Carbonic acid dissociates ito hydrogen and bicarbonate. Thus carbon dioxide is transported quickly as bicarbonates. 3) If an enzyme is added to a solution where its substrate and product are in equilibrium, will there be any change in the amount of substrate or product in the solution? The rate of a catalyzed reaction depends on substrate concentration. At saturation, all enzyme is bound to substrate‚ÄĒmaximum rate. Thus, no alterations will occur in the amount of substrate or product in the solution...
View Full Document

This note was uploaded on 02/05/2011 for the course BIO 311C taught by Professor Satasivian during the Spring '08 term at University of Texas.

Page1 / 2

Discussion Section Assignment, Week of Oct 11 - second....

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