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Cell membrane

Campbell Biology Test Bank Chapter 7

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Biology
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Biology
Membrane biology
Cell membrane
Lipid bilayer
Membrane potential
Osmosis
Facilitated diffusion
Lipid raft
Red blood cell
Biological membrane
Semipermeable membrane
Membrane protein
health

Campbell's Biology, 9e (Reece et al.) Chapter 7 Membrane Structure and Function Membranes and membrane transport are fundamental to cellular life. The concepts in this chapter require integration of concepts from previous chapters: the nature of water and hydrophobic versus hydrophilic molecules, the properties of lipid molecules and their role in regulating membrane fluidity, and the roles of proteins and carbohydrates in membrane function. The concepts of ion transport and electrochemical gradients across membranes are important foundations for the following chapters on energy metabolism. Finally, the bulk transport phenomena have important clinical significance in the immune system, during invasion by pathogens, and in cell signaling. Multiple-Choice Questions

Nutrition and Enzymes Powerpoint

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Biology
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Biology
Chemistry
nutrition
metabolism
Enzyme
Cell membrane
Hydrolysis
Glucose
Polysaccharide
Lipid
Carbohydrate
biochemistry
health

Nutrition In order for the human body to be healthy and resistant to disease, good nutrition is required. All living things are made of chemicals. In order to grow, develop and maintain bodily structures and functions, specific chemicals must be acquired from the food we eat. In a sense, we are what we eat. Nutrients can be divided into the following categories: Nutrients Overview Carbohydrates ? sugar based molecules that are metabolized for energy in cellular respiration and make up the structural components of plant cell walls. Lipids ? fat based molecules that store large quantities of energy. These molecules also make up the structure of cell membranes.

Cell Biology Review

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Biology
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Biology
organelles
Membrane biology
Cell Biology
microbiology
Cell membrane
cell
Endoplasmic reticulum
Vesicle
mitochondrion
Golgi apparatus
Biological membrane
health

David Kim 4/2/14 Dr. Oliveira AP Biology All cells have plasma membranes, cytosol, chromosomes and ribosomes. Prokaryotic cells do not have nuclei so the genetic information is in what is called the nucleoid. Prokaryotes also lack membrane bound organelles. Eukaryotic cells have genetic information known as DNA bound by a nuclear envelope. They also have membrane bound organelles like the Endoplasmic Reticulum and Golgi apparatus.

Nutrition and Enzymes (Biochemistry)

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Biology
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Biology
Chemistry
nutrition
metabolism
Enzyme
Cell membrane
Hydrolysis
Glucose
Polysaccharide
Lipid
Carbohydrate
biochemistry
health

Nutrition In order for the human body to be healthy and resistant to disease, good nutrition is required. All living things are made of chemicals. In order to grow, develop and maintain bodily structures and functions, specific chemicals must be acquired from the food we eat. In a sense, we are what we eat. Nutrients can be divided into the following categories: Nutrients Overview Carbohydrates ? sugar based molecules that are metabolized for energy in cellular respiration and make up the structural components of plant cell walls. Lipids ? fat based molecules that store large quantities of energy. These molecules also make up the structure of cell membranes.

Biology vocabulary

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Biology
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Biology
cellular respiration
metabolism
organelles
Membrane biology
Plant physiology
Cell membrane
Glycolysis
mitochondrion
Photosynthesis
cell
Mitochondrial matrix
health

Catabolic Reactions -These types of reactions break down large molecules into smaller ones. These reactions release energy. Anabolic Reactions -These types of reactions build large molecules from smaller components. These reactions consume energy. ATP-The main form of cellular energy. These molecules have a structure that is easy to form and easy to break to access the stored energy. Entropy - A measure of the disorder of a system. The amount of free energy lost to the environment is an example Polarity - Uneven distribution of charges across a molecule. Hydrogen Bonding - Attraction between positive charge on a hydrogen in a dipole and the negative end of another molecule. Think water! Adhesion - The attraction of a water molecule to another substance

Midterm Overview Bio

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Biology
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Cell Biology
cell cycle
organelles
Membrane biology
Cell membrane
Abiogenesis
Osmosis
mitosis
metabolism

You are allowed 3?X 5? ?cheat?/index card (both sides) Format: ~110 ABCD 3 Problems (rule of 70, ? live, organic diagram drawing 2 Essays, chosen from a menu of ~6 EC estimated score, question bank, max of 4% 1 Biology and Science- key terms, what is life and how did it get started? ...the cell basics of scientific method and terms applied to it 15 Evolution- evidence and key terms, purpose of sex Lamarck vs Darwin (acquired vs selected) Darwin vs Gould (gradualism vs punctuated equilibrium- fitness and luck) 16 Populations- species as a group concept, sex and variation, speciation, 17 Earth History- Timeline ?qualitative? knowledge of ?greatest hits? (timeline handout) Primates- up into the trees to form primates and as apes coming

Cell Membrane

Subject: 
Biology
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Biology
Membrane biology
Cell membrane
Facilitated diffusion
Osmosis
Carrier protein
Membrane protein
Lipid bilayer
Passive transport
Cytosol
Active transport
Tonicity
health

Cell Membrane Fluid Mosaic Model: Cell membranes consist of a fluid formed by a phospholipid bilayer and a ?mosaic?, or patchwork, of proteins Phospholipid: Polar and hydrophilic head, nonpolar and hydrophobic fatty acid tail Cell membrane also called plasma membrane Outside the membrane there is interstitial fluid, which is a salty liquid Inside the membrane there is the cytosol, which is mostly water. The cytosol is also the water portion of the cytoplasm Phospholipid bilayer: Formed since the hydrophilic heads form hydrogen bonds with water, causing the heads to face the water on either side. Since the fatty acid tails are hydrophobic, they cluster together within the bilayer

AP Bio Unit Objectives (Chapter 8)

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Biology
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Biology
Membrane biology
Biological membrane
Passive transport
Membrane protein
Lipid bilayer
Osmosis
Active transport
Semipermeable membrane
Exocytosis
Cell membrane
Membrane transport
health

Chapter 8: Membrane structure and function Membrane Structure Membrane models have evolved to fit new data Membranes are fluid Membranes are mosaics of structure and function Membrane carbohydrates are important for cell-cell recognition Traffic across membranes A membranes molecular organization results in selective permeability Permeability of the lipid bilayer Transport proteins Passive transport is diffusion across a membrane Osmosis is the passive transport of water Cell survival depends on balancing water uptake and loss Water balance of cells without walls Water balance of cells with walls Specific proteins facilitate the passive transport of water and selected solutes Active transport is the pumping of solutes against their gradients

biologych3

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Biology
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Chemistry
Biology
nutrition
biochemistry
Amino acid
Polysaccharide
Glucose
Hydrolysis
Cell membrane
Lipid
Carbohydrate
Monomer

salt is not a macromolecule bonds that form between units of polymeric macromolecules are covalent triglyceride/cellulose are not a correct monomer/polymer pairing in condensation reactions, the atoms that make up a water molecule are derived from both of the reactants polymerization reactions in which polysaccharides are synthesized from monosaccharides result in the formation of water during the formation of a peptide linkage a molecule of water is formed polysaccharides, polypeptides, and polynucleotides are broken down in hydrolysis reactions amino acids can be classified by the characteristics of their side chains or ?R? groups a protein can best be defined as a polymer of amino acids some proteins function as enzymes

BIO 101 MOCK EXAM 1

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Biology
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Chemistry
Biology
organelles
Membrane biology
Acid-base chemistry
Chemical bonding
Cell Biology
Cell membrane
metabolism
Amino acid
Acid
Hydrogen bond
chemistry of life

Bio 101- Sparace Fall 2013 Mock Exam 1: Chpt 2-7 15 / P / 30.973761 What is the atomic mass of Phosphorus? 5 8 15 30.973761 How many valence electrons does Phosphorus have? 2 5 8 15 Which of the following is NOT one of the four elements that make up 90% of living matter? Carbon Oxygen Helium Nitrogen Hydrogen What are the subatomic particles that make up atoms? Px, Py, and Pz Protons, neutrons, and electrons Anions, cations, and nutrions Carbon, oxygen, and hydrogen What is the sum of protons and neutrons? Atomic number Nuclear ratio Electronegativity Atomic mass Which bonds rely on the equal or unequal sharing of electrons? Hydrogen Bonds

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