Class Notes (834,057)
Canada (508,304)
Psychology (3,518)
PSY396H1 (20)
Ljubojevic (19)

PSY396 MAY 13.docx

7 Pages
Unlock Document


PSY396 MAY 13, 2013 3/4/5 Lecture format Cell - Know basic componesnt sof the cell Next - Lipid bilayer – fat molecules pair of tails pact densly and two layers of them - Semi permeable membrane – means allows passage of some molecules not allow passage of laeger ones or anions charged particles - Charged particles and larger ones need specific channel built for them - Nucleus hold dna and genetic material to replicate and send infor from one gen to another - Between nuc and membrane is cytoplasm contains is cytosol which is liquid gel and organells that float - Orgnaeeles different organs do specific ducntion Mito - Work as powerplants produce energy to drive various processes - Consume chem. Energy in form of atp - Made in mitochondria and sent to various parts of cell - Er - Complex web of memebranes and vessles - Protein synh - Riosomes – units that make proteins – translate rna to string of aa to proteins Golgi - Golgi - Next step in protein synth - Seres as post office where difernt chemicals are packaged and addressed to different parts of cells - Lysome - Waste processing not used digested basic parts - Vac and ves - Encasing in membrane and store materials - Vacuoles large vesiceles Proteins - Mediators of vast majority of cell functions - Each cell contains same genetic material - Which parts genetic material expressed as protein result in function - Protein long chain of aa - Polypeptide is chain of diff aa - Polypeptide colpases on self and 3d strucuture to become function protein - String of aa in protein by code in gene Dna rna - Genetic material translated to messenger material rna translated to proteins Next - Proteins formed take up vary different roles - Proteins structure role – skeleton of cell or matrix between cells - Proteins serve as enzymes facilator of favorable chemical reactions – rxn not happen on own will occur - Signaling – within and between cells - Recieveers as in receptors or signals themsevels - Transport – channel for different chemicals - Transcription factors what actually results in protein expression of gene determined by neighboring areas called regulatory regions “promoters” of certain genes Group 5 june 10 th - Psychosis and schizophrenia Transmission of info in the nervous system - Brief summary of the lectures - Look into the brain and how different cells communicate - All theses processes aris from simple things - Neurotransmission be broken down 4 steps - How send long disatance - Next ap reaches end of axon and nts released to synapse - What are ex and in psp Intro electrochemical gradiant - Sum of electrical and chemical forces acting on molecule or ions that drive this ion in or out of the cell Chemical - Vessel some sort impermeable membrane - Moving around and - Happens membrane becomes permeable - Simple diffusion through random movement move from higher con to lower con - Apparent movement of ions due to simple diffuisn from high to low is chemical gradient - Quantify the force from left to right is the g = rtln of con left over right - R is is gas constant - T is absolute temperate - Both basically constant - Force higher if large concentration - Till equal both sides Electrical gradient - Charged particles - Left more positive right more negative charged far from organic sustem - Opp attract - Distinct difference in charge around the membrane - Potential look like battery works on differences in potential - Difference in charge between both sides is membrane potential - Same t actual cell membrane - Outside more positive and more negative inside - Membranes are largely impermeable to charged molecules - Make it permeable force drviin charged particles to left and right - G zfv - Z is charge = is positive is 1 - Positive to right until gets to zero – membrane potential Electrochemical gradient - Closer to exsiting - Two compartments - Positive anions a and negative stuck on left - Membrane potential is zero - Open membrane chemical force acting on molecule a driving to right bec no A on right - Each positive ion leaves unmatched negative on left - More positive right and negative left creating membrane potential - Electrol forces acting on a pushing to the left - And chemical as well - Electrical and chemical forces At equilibrium - Left open the membrane two forces will be spent - Flow until reaches stage of equilibrium until no substantial force acting on A - Elchm gradient becomes 0 - Forces balanced out - G chmicla force equal to g electrical force - Zfv = rtln(chmr/chml) - Rearrange to calculate equilibrium potential - Rearrange of both formuals is Nernst equation - Know what it means – what influence eq potential - Charge and concentration and temperature In neurons - Membrane potential is -70mv - Rough outline of the membrane - Extracellular and cytoplasm or inside of cell - Importantion species ion is k cl and proteins themselves the amino acids used to build proteins are negatively charged
More Less

Related notes for PSY396H1

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.