Cellular Membranes
... • Biological membranes consist of lipids, proteins, and carbohydrates. The fluid mosaic model describes a phospholipid bilayer in which membrane proteins move laterally within the membrane. • Phospholipids are the most abundant lipid in the plasma membrane and amphipathic, containing both hydrophobi ...
... • Biological membranes consist of lipids, proteins, and carbohydrates. The fluid mosaic model describes a phospholipid bilayer in which membrane proteins move laterally within the membrane. • Phospholipids are the most abundant lipid in the plasma membrane and amphipathic, containing both hydrophobi ...
Transportation Through the Plasma Membrane
... And lipids vary from one membrane to another and give each type of membrane specific ________________ properties. ...
... And lipids vary from one membrane to another and give each type of membrane specific ________________ properties. ...
Gated ion channels
... • Proteins in membranes with an exposed receptor site • Can attach to specific ligand molecules and act as an intercellular communication system • Ligand can attach only to cells with that specific receptor ...
... • Proteins in membranes with an exposed receptor site • Can attach to specific ligand molecules and act as an intercellular communication system • Ligand can attach only to cells with that specific receptor ...
Chapter 11 LT
... I can identify and describe the role of second messengers such as cyclic AMP and Ca2+ I can describe how a cell signal is amplified by a phosphorylation cascade. I can describe how a cellular response in the nucleus differs from a cellular response in the cytoplasm. I can explain what apoptosis mean ...
... I can identify and describe the role of second messengers such as cyclic AMP and Ca2+ I can describe how a cell signal is amplified by a phosphorylation cascade. I can describe how a cellular response in the nucleus differs from a cellular response in the cytoplasm. I can explain what apoptosis mean ...
CHEM 260 | ELEMENTS OF BIOCHEMISTRY L/L
... - Lipids and Membranes - Lipid Metabolism - Aerobic Metabolism - Nucleic Acids - Genetic Information ...
... - Lipids and Membranes - Lipid Metabolism - Aerobic Metabolism - Nucleic Acids - Genetic Information ...
Part a
... (a) Simple diffusion of fat-soluble molecules directly through the phospholipid bilayer Copyright © 2010 Pearson Education, Inc. ...
... (a) Simple diffusion of fat-soluble molecules directly through the phospholipid bilayer Copyright © 2010 Pearson Education, Inc. ...
Biochemistry 304 2014 Student Edition Membranes
... Integral (Intrinsic) proteins are tightly associated with the membrane lipids due to the thermodynamic effect of their hydrophobic interactions. Integral proteins are amphiphiles with the exteriors of the segments in the bilayer having predominately hydrophobic residues, while those segments in the ...
... Integral (Intrinsic) proteins are tightly associated with the membrane lipids due to the thermodynamic effect of their hydrophobic interactions. Integral proteins are amphiphiles with the exteriors of the segments in the bilayer having predominately hydrophobic residues, while those segments in the ...
cells and transport GOOD lect07
... plasma membrane because of channel proteins and carrier proteins that span the membrane. Carrier proteins are specific and combine with only a certain type of molecule. Facilitated transport and active transport both require carrier proteins. ...
... plasma membrane because of channel proteins and carrier proteins that span the membrane. Carrier proteins are specific and combine with only a certain type of molecule. Facilitated transport and active transport both require carrier proteins. ...
Cell Organelles
... Endoplasmic reticulumsystem of internal membranes involved in making proteins. Smooth ER is where lipid components of the cell membrane are assembled, along with proteins andother materials that are exported from the cell. The portion of the ER involved int he synthesis of proteins is called rough ...
... Endoplasmic reticulumsystem of internal membranes involved in making proteins. Smooth ER is where lipid components of the cell membrane are assembled, along with proteins andother materials that are exported from the cell. The portion of the ER involved int he synthesis of proteins is called rough ...
The Generalized Cell Cell Structure
... – enzyme normally breaks down glycolipid commonly found in nerve cells – as glycolipid accumulates, nerve cells lose functionality – chromosome testing now available ...
... – enzyme normally breaks down glycolipid commonly found in nerve cells – as glycolipid accumulates, nerve cells lose functionality – chromosome testing now available ...
Movement Through the cell Membrane
... The inside of a cell is not just made of pure water it is a solution that has many different things dissolved in it, such as sugar. If there is a large amount of water on the outside of the cell in which direction does the water want to go? ...
... The inside of a cell is not just made of pure water it is a solution that has many different things dissolved in it, such as sugar. If there is a large amount of water on the outside of the cell in which direction does the water want to go? ...
Insights into the inner side: new facettes of endocytosis
... additional, often highly specialized sensations. When it comes down to the level of individual cells, it is the plasma membrane that does this job. Here is the site where a cell is confronted with its environment and here cluster numerous receptors, channels, carriers, but also nonproteinaceous mole ...
... additional, often highly specialized sensations. When it comes down to the level of individual cells, it is the plasma membrane that does this job. Here is the site where a cell is confronted with its environment and here cluster numerous receptors, channels, carriers, but also nonproteinaceous mole ...
LB145-lecture4
... to test the endosymbiosis hypothesis… • Maybe using PCR • Maybe using Microscopy • Perhaps using streptomycin, erythromycin, ...
... to test the endosymbiosis hypothesis… • Maybe using PCR • Maybe using Microscopy • Perhaps using streptomycin, erythromycin, ...
Exam Review for chapter 2-4
... 8. Van der Waals attractions and hydrogen bonds are similar in that they both a. Involve ionic interactions b. Involve chelated metals c. Require specific groups to attract d. Are short range interaction that only come into play when molecules are close 9. Forces that determine the folding of a macr ...
... 8. Van der Waals attractions and hydrogen bonds are similar in that they both a. Involve ionic interactions b. Involve chelated metals c. Require specific groups to attract d. Are short range interaction that only come into play when molecules are close 9. Forces that determine the folding of a macr ...
Biology II – Chapter 4 Key Terms
... 1. active transport – the movement of materials across a membrane through the use of cellular energy, normally against a concentration gradient 2. carrier protein – a membrane protein that facilitates the diffusion of specific substances across the membrane 3. cell wall – a layer of material, normal ...
... 1. active transport – the movement of materials across a membrane through the use of cellular energy, normally against a concentration gradient 2. carrier protein – a membrane protein that facilitates the diffusion of specific substances across the membrane 3. cell wall – a layer of material, normal ...
No Slide Title
... G-protein-linked receptors: 1. active receptor binds G-protein, GDP exchanged to GTP 3. G-protein breaks into GTP-a and bg; both can activate target proteins 4. GTP hydrolyzed to GDP, a and ...
... G-protein-linked receptors: 1. active receptor binds G-protein, GDP exchanged to GTP 3. G-protein breaks into GTP-a and bg; both can activate target proteins 4. GTP hydrolyzed to GDP, a and ...
Matter in Ecosystems Part 2
... H. Vesicles Sacs of material from the cell membrane, ER, and Golgi ...
... H. Vesicles Sacs of material from the cell membrane, ER, and Golgi ...
The Cell -- Membranes
... are NON POLAR. Molecules with no charge are not attracted to water; as a result water molecules tend to push them out of the way as they are attracted to each other. This causes molecules with no charge not to dissolve ...
... are NON POLAR. Molecules with no charge are not attracted to water; as a result water molecules tend to push them out of the way as they are attracted to each other. This causes molecules with no charge not to dissolve ...
Biology Passage 2 - HCC Learning Web
... whereas water freely diffuses through the lipid bilayer. Thus, a solution (solvent) can be considered hyper-tonic (more solute), hypo-tonic (less solute) or isotonic (same concentration) to the cell it surrounds. In addition, the flux of solvent in an effort to achieve equilibrium of solute concentr ...
... whereas water freely diffuses through the lipid bilayer. Thus, a solution (solvent) can be considered hyper-tonic (more solute), hypo-tonic (less solute) or isotonic (same concentration) to the cell it surrounds. In addition, the flux of solvent in an effort to achieve equilibrium of solute concentr ...
Cell Membrane Notes
... Slide one: cell membrane vs. cell wall Cell Membranes _________________ what comes into and out of cells Cell Walls provide _____________________________________ for the cell ...
... Slide one: cell membrane vs. cell wall Cell Membranes _________________ what comes into and out of cells Cell Walls provide _____________________________________ for the cell ...
The cell surface membrane
... Cholesterol molecules are also found within the phospholipid bilayer of the cell surface membrane adding strength to the membrane. They are very hydrophobic and therefore play an important role in preventing the loss of water and dissolved ions from the cell. They also pull together the fatty acid t ...
... Cholesterol molecules are also found within the phospholipid bilayer of the cell surface membrane adding strength to the membrane. They are very hydrophobic and therefore play an important role in preventing the loss of water and dissolved ions from the cell. They also pull together the fatty acid t ...
General Biology Notes 9 The Cell Membrane (pages 204, 205, 208
... (see II C below) b. Some proteins stick out from the membrane into the surrounding environment and help the cell sense ______________ in the environment and help the cell to ____________________ with other cells 2. ________________________ in the membrane are also used in cellular communication II. ...
... (see II C below) b. Some proteins stick out from the membrane into the surrounding environment and help the cell sense ______________ in the environment and help the cell to ____________________ with other cells 2. ________________________ in the membrane are also used in cellular communication II. ...
The Cell Membrane
... dynamic and constantly in ux. The plasma membrane must be su ciently exible to allow certain cells, such as red blood cells and white blood cells, to change shape as they pass through narrow capillaries. These are the more obvious functions of a plasma membrane. In addition, the surface of the pla ...
... dynamic and constantly in ux. The plasma membrane must be su ciently exible to allow certain cells, such as red blood cells and white blood cells, to change shape as they pass through narrow capillaries. These are the more obvious functions of a plasma membrane. In addition, the surface of the pla ...
Lipid raft
The plasma membranes of cells contain combinations of glycosphingolipids and protein receptors organized in glycolipoprotein microdomains termed lipid rafts. These specialized membrane microdomains compartmentalize cellular processes by serving as organizing centers for the assembly of signaling molecules, influencing membrane fluidity and membrane protein trafficking, and regulating neurotransmission and receptor trafficking. Lipid rafts are more ordered and tightly packed than the surrounding bilayer, but float freely in the membrane bilayer. Although more common in plasma membrane, lipid rafts have also been reported in other parts of the cell, such as Golgi and lysosomes.