Turgor pressure

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Semipermeable membrane

AP Reading Guide Chapter 7: Membrane Structure and Function Fred and Theresa Holtzclaw Name_______________________Period___________ Chapter 7: Membrane Structure and Function Concept 7.1 Cellular membranes are fluid mosaics of lipids and proteins 1. The large molecules of all living things fall into just four main classes. Name them. 2. Explain what is meant when we say a molecule is amphipathic. 3. In the 1960s, the Davson-Danielli model of membrane structure was widely accepted. Describe this model and then cite two lines of evidence that were inconsistent with it. 4. Who proposed the fluid mosaic model of membrane structure? When? Describe this model.

Problems Water Potential

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Practice Problems ? Osmosis and Water potential Use this key to answer all the problems below. If you choose B or C, rewrite the statement so that it is complete and true. A = TRUE B = FALSE C = NOT ENOUGH INFORMATION PROBLEM ONE: The initial molar concentration of the cytoplasm inside a cell is 2M and the cell is placed in a solution with a concentration of 2.5M. Initially, free energy is greater inside the cell than outside It is possible that this cell is already in equilibrium with its surroundings. Initially, solute concentration is greater outside the cell than inside. Water will enter the cell because solute potential is lower inside the cell than outside.

Cell and Transport Study Guide

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cell

Vacuole

Cells & Transport Study Guide Cell Theory 1) All living things are made up of cells 2) Cells are the basic units of structure and function in an organism 3) New cells are produced from existing cells Scientists: 1665 Robert Hooke Coined word ?cell? Looked at cork under microscope 1674 Anton van Leeuwenhoek Perfected the simple microscope Discovered protozoa 1838 Matthias Schleiden Discovered/published fact that all plants are made of cells 1839 Theodor Schwann Discovered/published fact that all animals are made of cells 1855 Rudolf Virchow Discovered/published fact that all cells come from preexisting cells 1931 Janet Plowe Demonstrated that a cell is a physical structure 1970 Lynne Margulis Created endosymbiotic theory Endosymbiotic Theory

campbell_ap_bio_practice_test_ch7

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Integral membrane proteins

Membrane biology

Cell Biology

diffusion

Semipermeable membrane

Carrier protein

Chapter?7 Membrane?Structure?and?Function Multiple-Choice?Questions 1) Who?was/were?the?first?to?propose?that?cell?membranes?are?phospholipid?bilayers? A) H.?Davson?and?J.?Danielli B) I.?Langmuir C) C.?Overton D) S.?Singer?and?G.?Nicolson E) E.?Gorter?and?F.?Grendel Answer: E Topic: Concept?7.1 Skill: Knowledge/Comprehension 2) Who?proposed?that?membranes?are?a?phospholipid?bilayer?between?two?layers?of?hydrophilic?proteins? A) H.?Davson?and?J.?Danielli B) I.?Langmuir C) C.?Overton D) S.?Singer?and?G.?Nicolson E) E.?Gorter?and?F.?Grendel Answer: A Topic: Concept?7.1 Skill: Knowledge/Comprehension 3) Who?proposed?that?the?membrane?is?a?mosaic?of?protein?molecules?bobbing?in?a?fluid?bilayer?of?phospholipids? A) H.?Davson?and?J.?Danielli B) I.?Langmuir C) C.?Overton

AP biology review chapter 6 and 7

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cell

Vesicle

Turgor pressure

Golgi apparatus

Lysosome