Seminars: Molecular and cellular biophysics WS04/05
... Biological membranes have a very heterogenous composition of lipids and proteins. Recent findings indicate that cholesterol rich (sub)micrometer lipid domains in cellular membranes are of central importance for the modulation of the activity of particular membrane proteins. The field of « rafts » is ...
... Biological membranes have a very heterogenous composition of lipids and proteins. Recent findings indicate that cholesterol rich (sub)micrometer lipid domains in cellular membranes are of central importance for the modulation of the activity of particular membrane proteins. The field of « rafts » is ...
SB3a
... –Involves 3 steps: Glycolysis, Krebs Cycle, and Electron Transport Chain –Complete breakdown of _______________ –Produces: ATP + carbon dioxide –More efficient because it produces a _____________________________ of ATP Step 1: Glycolysis anaerobic process _________________________________ takes ...
... –Involves 3 steps: Glycolysis, Krebs Cycle, and Electron Transport Chain –Complete breakdown of _______________ –Produces: ATP + carbon dioxide –More efficient because it produces a _____________________________ of ATP Step 1: Glycolysis anaerobic process _________________________________ takes ...
Where is energy stored in biomolecules like sugars, carbs, lipids, etc.
... Describe what the electron transport chain is and where it is located in the mitochondria. ...
... Describe what the electron transport chain is and where it is located in the mitochondria. ...
Document
... 1. Rough ER has ribosomes and smooth ER does not. Rough ER is where oligosaccharide groups are attached to polypeptides. Smooth ER is the area from which vesicles carrying proteins and lipids are budded, inactivates harmful chemicals and breaks down fatty acids. 2. The golgi bodies are where protein ...
... 1. Rough ER has ribosomes and smooth ER does not. Rough ER is where oligosaccharide groups are attached to polypeptides. Smooth ER is the area from which vesicles carrying proteins and lipids are budded, inactivates harmful chemicals and breaks down fatty acids. 2. The golgi bodies are where protein ...
irm_ch23
... circular molecule found near the center of the cell in a region called the nucleoid. Eukaryotic cells, which are found in all higher organisms, have their DNA in a membrane-enclosed nucleus. ...
... circular molecule found near the center of the cell in a region called the nucleoid. Eukaryotic cells, which are found in all higher organisms, have their DNA in a membrane-enclosed nucleus. ...
Solubilization of Membrane Proteins into Functional Lipid‐Bilayer
... membrane proteins depend on membrane-mimetic systems to retain their native structures and functions. To this end, lipidbilayer nanodiscs that are bounded by scaffold proteins or amphiphilic polymers such as styrene/maleic acid (SMA) copolymers have been introduced as alternatives to detergent micel ...
... membrane proteins depend on membrane-mimetic systems to retain their native structures and functions. To this end, lipidbilayer nanodiscs that are bounded by scaffold proteins or amphiphilic polymers such as styrene/maleic acid (SMA) copolymers have been introduced as alternatives to detergent micel ...
Original
... 1) Electrons in H atoms from NADH + FADH2 are given up to ETC a. NADH donates electrons @ beginning b. FADH2 donates later c. Also give up protons (H+) 2) Electrons are passed down chain, losing energy ...
... 1) Electrons in H atoms from NADH + FADH2 are given up to ETC a. NADH donates electrons @ beginning b. FADH2 donates later c. Also give up protons (H+) 2) Electrons are passed down chain, losing energy ...
Signaling9
... Sequential dephosphorylation of IP3 by enzyme-catalyzed hydrolysis yields inositol, a substrate for synthesis of PI. IP3 may instead be phosphorylated via specific kinases, to IP4, IP5 or IP6. Some of these have signal roles. E.g., the IP4 inositol-1,3,4,5-tetraphosphate in some cells stimulates Ca+ ...
... Sequential dephosphorylation of IP3 by enzyme-catalyzed hydrolysis yields inositol, a substrate for synthesis of PI. IP3 may instead be phosphorylated via specific kinases, to IP4, IP5 or IP6. Some of these have signal roles. E.g., the IP4 inositol-1,3,4,5-tetraphosphate in some cells stimulates Ca+ ...
ADP, ATP and Cellular Respiration Powerpoint
... Occurs Across Inner Mitochondrial membrane (cristae) NADH and FADH2 pass e- down chain of coenzymes in membrane (like hot potato) ...
... Occurs Across Inner Mitochondrial membrane (cristae) NADH and FADH2 pass e- down chain of coenzymes in membrane (like hot potato) ...
File
... an action potential occurs • The strength of an action potential does not change, but an intense stimulus can cause an axon to fire (start an action potential) more often • Requires two gated channel proteins in the membrane: o One channel protein allows Na+ to pass into the axon o One channel prote ...
... an action potential occurs • The strength of an action potential does not change, but an intense stimulus can cause an axon to fire (start an action potential) more often • Requires two gated channel proteins in the membrane: o One channel protein allows Na+ to pass into the axon o One channel prote ...
chapter 7 diffusion
... A membrane is a collage of different proteins embedded in the fluid matrix of the lipid bilayer ...
... A membrane is a collage of different proteins embedded in the fluid matrix of the lipid bilayer ...
Marine Mammal Dive Response
... electron transport chain and eventually make water. Meanwhile, the hydrogen ions are pumped out into the intermembrane space. When they cross back into the mitochondrial matrix, they produce ATP. ...
... electron transport chain and eventually make water. Meanwhile, the hydrogen ions are pumped out into the intermembrane space. When they cross back into the mitochondrial matrix, they produce ATP. ...
Structural organization of the endoplasmic reticulum
... steroid-synthesizing cells, liver cells, neurons and muscle cells. The primary activities of the SER are very different in each of these cell types (reviewed in Hopkins, 1978). In liver, the SER is important for detoxification of hydrophobic substances. In steroid producing cells, it is the site of ...
... steroid-synthesizing cells, liver cells, neurons and muscle cells. The primary activities of the SER are very different in each of these cell types (reviewed in Hopkins, 1978). In liver, the SER is important for detoxification of hydrophobic substances. In steroid producing cells, it is the site of ...
Comparison of Cryopreserved Amniotic Membrane and
... • Cryopreserved umbilical cord tissues contain significantly higher amounts of extracellular matrix components, including high molecular weight hyaluronic acid, that are attributed to the antiinflammatory and anti-scarring properties of fetal tissues that aid in tissue healing • Cryopreserved umbili ...
... • Cryopreserved umbilical cord tissues contain significantly higher amounts of extracellular matrix components, including high molecular weight hyaluronic acid, that are attributed to the antiinflammatory and anti-scarring properties of fetal tissues that aid in tissue healing • Cryopreserved umbili ...
BI 200 - Exam #2
... d. none of the above – eukaryotes don’t have mitochondria 24. In chemiosmosis (the generation of a proton gradient) a. OH- accumulates on the outside of the membrane while H+ accumulates b. the pH of the cytoplasm goes down c. the inside of the cell becomes negative relative to the outside d. ATP is ...
... d. none of the above – eukaryotes don’t have mitochondria 24. In chemiosmosis (the generation of a proton gradient) a. OH- accumulates on the outside of the membrane while H+ accumulates b. the pH of the cytoplasm goes down c. the inside of the cell becomes negative relative to the outside d. ATP is ...
Lec-2 Cell Structure
... 6 Major Functions Of Membrane Proteins 1. Transport. (left) A protein that spans the membrane may provide a hydrophilic channel across the membrane that is selective for a particular solute. (right) Other transport proteins shuttle a substance from one side to the other by changing shape. Some of t ...
... 6 Major Functions Of Membrane Proteins 1. Transport. (left) A protein that spans the membrane may provide a hydrophilic channel across the membrane that is selective for a particular solute. (right) Other transport proteins shuttle a substance from one side to the other by changing shape. Some of t ...
Membrane Permeability Suggested Additional
... against an electrochemical gradient - these are Secondary Active Transporters. Active transporters make an endergonic reaction (Keq < 1) more exergonic (Keq > 1) by coupling the first reaction (e.g. Na export from low to high concentration) to a second exergonic reaction (e.g. ATP-hydrolysis) throug ...
... against an electrochemical gradient - these are Secondary Active Transporters. Active transporters make an endergonic reaction (Keq < 1) more exergonic (Keq > 1) by coupling the first reaction (e.g. Na export from low to high concentration) to a second exergonic reaction (e.g. ATP-hydrolysis) throug ...
The Cell Membrane
... Water is attracted to hydrophilic heads and NOT to hydrophobic tails Water pushes tails away and they end up pointed toward each other and AWAY from water. Results in Bilayer ...
... Water is attracted to hydrophilic heads and NOT to hydrophobic tails Water pushes tails away and they end up pointed toward each other and AWAY from water. Results in Bilayer ...
1. A. Name each enzyme present in the citric acid cycle and specify
... PDH makes acetyl CoA + CO2 + NADH. In the presence of air the NADH can be recycled via the ET chain; in the absence of air it can only be metabolized to the extent that there is NAD available. C. The oxidation of pyruvate by the pyruvate dehydrogenase complex consists of 5 enzyme–catalyzed steps. On ...
... PDH makes acetyl CoA + CO2 + NADH. In the presence of air the NADH can be recycled via the ET chain; in the absence of air it can only be metabolized to the extent that there is NAD available. C. The oxidation of pyruvate by the pyruvate dehydrogenase complex consists of 5 enzyme–catalyzed steps. On ...
Chapter 5 Lecture Notes
... c. Oxygenic photosynthesis: 6 CO2 + 12 H2O + Light C6H12O6 + 6 O2 + 6 H2O i. Water is the electron donor. d. Light-dependent (light) reactions: Photophosphorylation. Fig. 25. i. Cyclic photophosphorylation. (Relatively uncommon photosynthesis pathway that does NOT generate oxygen gas). 1. Light ex ...
... c. Oxygenic photosynthesis: 6 CO2 + 12 H2O + Light C6H12O6 + 6 O2 + 6 H2O i. Water is the electron donor. d. Light-dependent (light) reactions: Photophosphorylation. Fig. 25. i. Cyclic photophosphorylation. (Relatively uncommon photosynthesis pathway that does NOT generate oxygen gas). 1. Light ex ...
Communication
... Hydrogen has been rapidly released and has reduced the dye. For this to happen – dehydrogenase enzymes present in yeast cells must have acted on the glucose, the respiratory substrate, and oxidised it. ...
... Hydrogen has been rapidly released and has reduced the dye. For this to happen – dehydrogenase enzymes present in yeast cells must have acted on the glucose, the respiratory substrate, and oxidised it. ...
6-10summary
... These channels open or close depending on the presence or absence of an electrical, chemical, or physical stimulus. Some transport proteins do not provide channels but appear to actually translocate the solute-binding site and the solute across the membrane as the transport protein changes shape. ○ ...
... These channels open or close depending on the presence or absence of an electrical, chemical, or physical stimulus. Some transport proteins do not provide channels but appear to actually translocate the solute-binding site and the solute across the membrane as the transport protein changes shape. ○ ...
Thylakoid
A thylakoid is a membrane-bound compartment inside chloroplasts and cyanobacteria. They are the site of the light-dependent reactions of photosynthesis. Thylakoids consist of a thylakoid membrane surrounding a thylakoid lumen. Chloroplast thylakoids frequently form stacks of disks referred to as grana (singular: granum). Grana are connected by intergranal or stroma thylakoids, which join granum stacks together as a single functional compartment.