We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byHarrison Cornick
Modified about 1 year ago
PROTEIN PHYSICS LECTURE 12
Globular Fibrous H-bonds & hydrophobics Membrane ____
Bacteriorodopsin with retinal Transport of protons H +
Porin Transport of polar molecules
Pore in membrane. Free energy of charge in the non-polar pore: ~ q 2 / [( MEMBR WATER ) 1/2 r PORE ] ~ ~ 20 kcal/mol / r PORE (Å) ~ 20 kcal/mol / r PORE (Å)
G-protein Slow decay of GTP = timer of action
Pigments in photo- syntheticcenter:Electrontransferchlorophyll Light Light
Tunneling P(X) ~ 10 -X(Å) T-independent Frequency of vibrations (attacks): f ~ 10 15 /sec Successful attacks: f SUCCS. (x) ~ P(x)f, e.g.: f SUCCS. (5Å) ~ 10 -5+15 ~ ~ 10 10 /sec ~ 10 10 /sec Atom 1Å Attenuation of electron density: electron density:
7.5 Proteins Learning Target: Explain the significance of polar and nonpolar amino acids. Outline the difference between fibrous and globular proteins.
Remember Atoms? Where were the protons and neutrons found? Where were the electrons found? How many electrons are in each shell when full?
Class Notes: Chapter 6 sec.2. Polar Molecules Chemical bonding is the result of either an atom sharing one or more electrons with another atom or an atom.
Properties of Water Biochemistry. Why is Water Important? Habitat Transport medium Some metabolic reactions Cell shape homeostasis.
Learning Targets “I Can…” -Draw a water molecule and label the atoms and their partial charges. -Distinguish between adhesion and cohesion. -Define “polarity.”
Chapter 4. Transport Across the Cell Membrane Substances need to move into and out of the cell in order to maintain homeostasis They can do this by.
CHAPTER 12 Membrane Structure and Function. Biological Membranes are composed of Lipid Bilayers and Proteins -Biological membranes define the external.
Transport. Concentration Gradient If there is a concentration gradient, movement will occur After concentrations are equal= dynamic equilibrium – Dynamic.
Review for Cell Membrane Structure & Molecular Movement Quiz!
The Cell Membrane. Phospholipids Fatty acid Phosphate Phosphate head –hydrophilic Fatty acid tails –hydrophobic Arranged as a bilayer Aaaah, one of those.
Water and Its Importance. Water and Living Organisms Water is the most important compound in living organisms. It makes up 70 – 95% of most organisms.
Movement Through the Membrane Mr. Luis A. Velázquez Biology.
Organic and Inorganic Molecules in the Human Body.
Chapter 2 Chemistry of Life Section 1: Nature of Matter.
The Cell Membrane. About Cell Membranes All cells have a cell membrane Functions: a.Controls what enters and exits the cell to maintain an internal balance.
Polarity of Bonds Molecular Polarity. Equal Pull on Electrons If there is no difference in the electronegativity of the atoms forming a covalent bond,
What our bodies are made of Chemistry of Cells. Nature of Matter All matter is made of atoms. Atoms consist of electrons, protons and neutrons. Molecules.
Final Jeopardy Question Atoms & Bonding Protein Structure 500 Cellular Respiration Macro- molecules & Conservation of Energy Enzyme Activity Photo-
-OH Name of Functional group: This is a hydroxyl Function of the group: Draws electrons Attracts water, Dissolves organic materials such as sugar.
2.2 Properties of Water KEY CONCEPT Water’s unique properties allow life to exist on Earth.
The Cell Membrane
AP Biology The Cell Membrane AP Biology Overview The cell membrane separates the inside of a living cell from its surroundings Function to maintain.
Cellular Membrane Notes About Cell Membranes 1. All cells have a cell membrane 2.Functions: a.Controls what enters and exits the cell to maintain an.
AP Bio Unit 1 Review To Do: 1) Title your page “Unit 1 Review” 2) Number down your page 1-23.
How Cells Function. Video: CCBB-00CF-43A C98A1A92B&blnFromSearch=1&productcode=DETB#
Roadmap of protein traffic inside cell. Two ways in which a sorting signal can be built into a protein.
Chapter 2: Atoms and Molecules of Ancient Earth Life requires about 25 elements carbon (C) oxygen (O) hydrogen (H) nitrogen (N)
Ions/Dot Structure BondingDefinitio ns ProblemsLab Question Bonus Question: 5000 pts.
Ionic Bonding & Covalent Bonding. Ionic Bonding Ionic Bonding – TRANSFER of electrons Metals + Nonmetals = Ionic Bond.
Discovering Photosynthesis Van Helmont- wanted to know if plants grow by taking stuff out of the soil Concluded the weight came from the water (hydrate).
Lipids. What are lipids? Large non polar organic molecules Elements that make up most lipids: – Carbon – Hydrogen – Oxygen Examples: – Phospholipids,
Sec61/SecY Protein review Sec61 protein is important for the movement of proteins across the cell membrane? A signal sequence guides the protein to the.
2.1 Atoms, Ions, and Molecules KEY CONCEPT All living things are based on atoms and their interactions.
Concept Cards. Section 2.1 Parts of an atom Charge on electrons, location Charge on protons, location Charge on neutrons, location Charge on every element.
More than you ever wanted to know about Photosynthesis (part 1) Light Dependent Reactions: Photosystem II and Photosystem I.
Bio 178 Lecture 11 Biological Membranes (Cntd.)
Introduction to Biophysics Lecture 3 Molecular forces in Biological Structures.
Biochemistry Jeopardy Chem IS TRYEnzymesMacromoleculesPotpourriMore Potpourri
2.2 Properties of Water TEKS 4B, 9A The student is expected to: 4B investigate and explain cellular processes, including homeostasis, energy conversions,
Chemical Bonding. Covalent Bonds Formed when 2 atoms share electrons.
MOVING FROM ECOLOGY TO BIOCHEMISTRY. BIOCHEMISTRY LEVELS OF ORGANIZATION Organisms Organ Systems OrgansTissues CellsMoleculesAtoms Subatomic Particles.
AP Biology Light Dependent Reactions – Electron Transport Chain.
Chapter 2 Chemistry of Life Section 1: Nature of Matter Section 2: Water and Solutions Section 3: Chemistry of Cells Section 4: Energy and Chemical Reactions.
Plasma Membrane Responsible for homeostasis. Plasma membrane Thin, flexible boundary between a cell and its environment. Allows nutrients in and allows.
An atom is… The smallest unit of _____________. So what is that? Anything that has ____________ and takes up _____________ is matter! Everything is made.
Keystone Review – Cell Membrane 1.C – The polar water molecule is repelled by the nonpolar, hydrophobic, fatty acid tail. 2.D – Nucleic acids, such as.
Cell Membrane Function Part I. How does the membrane control what enters or leaves the cell? Passive transport (without energy input) -Diffusion -Facilitated.
Summarize the main functions of a cell membrane. List and illustrate the main structures of a cell membrane, in terms of phospholipids, proteins and carbohydrates.
Connective tissue objectives –List the basic components of connective tissue and their contribution to tissue function. –Name and describe the different.
© 2017 SlidePlayer.com Inc. All rights reserved.