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 byBaylee Palin
Modified over 2 years ago
HONORS BIOLOGY CHAPTER 5 REVIEW
#1 Why is fluid mosaic a good description of the plasma membrane?Structures shift in place Watery hydrophilic heads and hydrophobic (fatty tails)
Why is the cell membrane called a phospholipid bilayer? #1 Why is the cell membrane called a phospholipid bilayer? Two layers of phospho heads and fatty acid tails
#2 Six functions of proteins in a plasma membrane: p.74 Attach to ECMSignal transduction Transport Intercellular junction Cell-cell recognition Enzymatic activity
#3 Can easily enter Hydrophobic molecules (oil soluble): O2, N2Nonpolar: benzene Very small uncharged or small polar molecules: H2O, Urea, glycerol, CO2 Can NOT easily enter Large uncharged Glucose,Sucrose Polar molecules sucrose (see OH groups) Hydrophilic Ions (charged) H+ , Na+ , HCO3 , K+, Ca2+, Cl-, Mg2+
#4 3 types of passive transport Diffusion-just passing of hi to lowOsmosis-passing of water thru a selectively permeable memb. Facilitated – Hi to low through a protein channel
#5 What does it mean to go “down the gradient?”Move from hi to low concentration What does it mean to go “against the gradient? Move from low to high (with energy)
#6 What direction does the water flow if a cell of 4% solutes is placed in: 10% 4% 0%
#6 What direction does the water flow if a cell of 4% solutes is placed in: REMEMBER: HYPO TO HYPER 10% 4% 0% 4%
#7 What is tonicity? Measure of osmotic pressure gradient determined by the solute concentration that cannot cross the selectively permeable membrane
#7 Note water flows from high water concentration to low (hypo to hyper)
#8 Animal Cells
#9 How does the contractile vacuole control water in a paramecium?Contractile vacuole youtube Water squeezed out of vacuole
#10 What is an aquaporin? Integral membrane proteins moving water3 billion more times than just moving through a regular plasma membrane
#11 Protein channels span the membrane.Exocytosis and endocytosis are both active transport. Protein channels span the membrane. Endocytosis and exocytosis engulf the particle with the membrane.
#12 Large liquid receptors Particle drops specific
#13 Ability to cause change or do work L. energy Thermal energyO. heat
13 Energy as a result of location or structure I. potentialType of energy released or need in molecules N. chemical
#13 Study of energy transformations M thermodynamicsReaction that releases energy E. exergonic
Makes products rich in potential energy G. Endergonic Energy of motion #13 Makes products rich in potential energy G. Endergonic Energy of motion J. kinetic
#13 Measure of disorder B. Entropy Energy in the universe is constantC.1st Law of Thermodynamics
#13 Energy from exergonic to run endergonic K. Energy couplingTotal of an organism’s chemical reactions F. metabolism
#13 Series of chemical reactions. A. Metabolic pathway
#13 Energy conversions increase the entropyD. 2nd Law of Thermodynamics Cells use oxygen to release energy from molecules H. Cellular respiration
#14 What does ATP stand for? Adenosine triphosphate
#15 What part of the ATP molecule is lost or gained? PhosphateIs ATP recyclable? YES
Is ATP made by phosphorylation?#16 Is ATP made by phosphorylation? YES ADP + P = ATP ADP is made by hydrolysis. ATP = ADP + P
#17 Is ATP made from exergonic reactions or endergonic? Endergonic
#18 What is activation energy?Amount of energy needed to get a reaction going. Why is this energy needed? Reactants are stable and bonds need to be broken or distorted.
#18 How do enzymes affect the amount of activation energy needed?Reduces the activation energy needed Why? Enzyme brings the reactants together.
#19 Why are enzymes called “Biological catalysts?They are proteins (biological) and speed up reactions without changing themselves.
#20 SKETCH HOW AN ENZYME WORKS:
#21 What is the purpose of the “induced fit” of an enzyme-substrate complex? The enzyme slightly changes the shape of the active site to contort/break substrate bonds.
#22 Why might too high temperatures make an enzyme not function properly? Denature (unravel) the enzyme and change the shape of the active site.
#23 What is the optimal temperature for most human enzymes?35-40o C What is the optimal pH for most enzymes? 6-8
#24 What is the difference between cofactors and coenzymes?Cofactors are inorganic and coenzymes are organic.
#25 Sketch an enzyme with a competitive inhibitor.
#26 Sketch an enzyme and its substrate with a noncompetitive inhibitor.
#28 What is it called if a cell produces more product than it needs and the product act as an inhibitor? Feedback inhibition (negative feedback)
#29 MATCH Ibuprofen Penicillin Beta blockers Protease inhibitorsInhibits prostanglandins (sensation of pain) Blocks bact. Cell walls Blood pressure meds Target HIV Ibuprofen Penicillin Beta blockers Protease inhibitors
#31 LABEL THE PLASMA MEMBRANE: Phospho head A1 Cholesterol ELipid tail A2 Protein pump G Carbohydrate chain D Glycolipid F
Passive transport protein#31 H I A B C Peripheral protein Glycoprotein Phospholipid Receptor protein Passive transport protein
32. If given the concentrations in and out of dialysis tubing of sucrose solutions predict movement of distilled water. 1M 0.8 M 0.6 M 0.4 M 0.2 M 0.0 M
32. movement of water 1M in tube0.0 M in/out If given the concentrations in and out of dialysis tubing of sucrose solutions predict movement of distilled water.
What is the molarity of the potato coreWhat is the molarity of the potato core? (where line crosses zero line) 0.3M
Chapter 5 The working cell.
CHAPTER 5 The Working Cell Overview: Energy Def Laws Chemical Reactions ATP Enzymes Def Activity Membrane Structure Function Transport (passive, active,
Cell Membrane, Transport, Enzymes, & Energy
Chapter 5 The working cell. Cellular energy Forms – Kinetic – Potential Energy of cells is ATP – Energy lies in covalent bonds between P groups.
ENERGY, THERMODYNAMICS and ENZYMES
Cellular Functioning Chapter 5. CELLULAR MEMBRANES.
THE WORKING CELL.
Fibers of extracellular matrix (ECM)
I. MEMBRANE STRUCTURE AND FUNCTION
The Plasma Membrane - Gateway to the Cell.
2 Sylvia S. Mader Sylvia S. Mader Concepts of Biology © Zanichelli editore, 2012 Immagini e concetti della biologia.
AP Biology Review Chapters 7 & 8. Q What part of the cell membrane enables the membrane to remain liquidy?
UNIT 2 Chapter 6: A Tour of the Cell Chapter 7: Membrane Structure & Function Chapter 8: An Introduction to Metabolism.
5.12 Chemical reactions either release or store energy An endergonic reaction requires an input of energy and yields products rich in potential energy.
Ground Rules of Metabolism
Introduction to Metabolism Chapter 6. Metabolism - sum of organism’s chemical processes. Enzymes start processes. Catabolic pathways release energy (breaks.
Cell Membrane Strucutre 1. Phospholipid bilayer 1. Phospholipid bilayer a. hydrophilic heads point out (phosphate) a. hydrophilic heads point out (phosphate)
6.1 Cells and the Flow of Energy Energy is the ability to do work or bring about change. Forms of Energy –Kinetic energy is the energy of motion. –Potential.
Ms. Napolitano & Mrs. Haas CP Biology
The Working Cell Purpose Isolate cell from outside environment Regulate materials coming in and out Communication with other cellls.
Cellular Activities Movements through Membranes. Structure Phospholipid bilayer Proteins Glycoproteins Cholesterol.
Chapter 5 The Working Cell What do Fireflies have to do with energy? The light flashes they create require energy What is the main reason for producing.
Metabolism Chapter 06. Metabolism 2Outline Forms of Energy Laws of Thermodynamics Metabolic Reactions ATP Metabolic Pathways Energy of Activation.
Chapter 5 – The Working Cell
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Chapter 5 Lecture Slides.
Chapter 8 Metabolism: Energy and Enzymes Energy is the capacity to do work; cells must continually use energy to do biological work. Kinetic Energy is.
Mader: Biology 8 th Ed. Metabolism: Energy and Enzymes Chapter 6.
Inquiry into Life Twelfth Edition Chapter 6 Lecture PowerPoint to accompany Sylvia S. Mader Copyright © The McGraw-Hill Companies, Inc. Permission required.
CP BIO: Ch. 7 The Cell Membrane
Materials: PICK UP A COPY OF THE LAB Notes pages and pencil The Plan: Macromolecule review Macromolecule Quiz Begin Eggcellent Lab Take.
Membranes, Transport & Communication. Demo Macromolecules What are the 4 macromolecules?
Membrane Structure and Function Chapter 7 Biology – Campbell Reece.
Unit 2 – The cell membrane Biology. Plasma Membrane It protects and supports the cell and also controls everything that enters and leaves the cell. Selective.
Table 5-1, p. 80. Energy In, Energy Out Chemical reactions –Reactants (molecules in) –Products (molecules out) Endergonic reactions (energy-requiring)
The Plasma Membrane Fluid Dynamics and Cell Transportation.
The Plasma Membrane and Cell Transport Biology Sections 7.2 and 8.1 Biology Sections 7.2 and 8.1.
Chapter 5 Membranes and Transport. Cell Membrane Function: To control passage of substances Selectively permeable: Some substances and chemicals can pass.
Chapter 5: The Working Cell **This Power Point Presentation can be found on my eBoard**
Chapter 7 Membrane Structure and Function. Plasma Membrane u The membrane at the boundary of every cell. u Functions as a selective barrier for the passage.
4-1 Chapter 4: Membrane Structure and Function. 4-2 Plasma Membrane Structure and Function The plasma membrane separates the internal environment of the.
ENERGY AND THE CELL.
Cell Membrane & Transport Fluid mosaic model - Lipids, proteins & carbohydrates Membrane trafficking - Passive Transport - Active Transport - Bulk.
Bicyclists: © Tyler Stableford/The Image Bank/Getty Images
Chapter 5: The Working Cell. All chemical reactions involve the transfer of energy Metabolism – All chemical reactions of a cell Energy has two forms:
CHAPTER 5 The Working Cell Energy and ATP, Transport, and Enzymes.
Chapter 4 Cells and their Environment
Chemical Reactions and Enzymes Chapter 8: An Introduction to Metabolism.
Chapter 5 A Closer Look At Plasma Membranes
Cellular Transport. Introduction to Cell Transport Cell transport= moving materials in and out of a cell All living cells need to be able to: – Take in.
© 2017 SlidePlayer.com Inc. All rights reserved.