Mechanisms of cell death
... activation is common among caspases. Thus activation shows positive feedback characteristics consistent with a binary on-off regulation. • Ectopic expression of caspases in mammalian cells induces apoptosis. This is the strongest evidence for proteolytic mediation of apoptosis. The key intracellular ...
... activation is common among caspases. Thus activation shows positive feedback characteristics consistent with a binary on-off regulation. • Ectopic expression of caspases in mammalian cells induces apoptosis. This is the strongest evidence for proteolytic mediation of apoptosis. The key intracellular ...
Chapter 1: The Biochemical Basis of life
... Conduction of Electrical Signals by Neurons Membrane potential – is the electrical potential of a membrane, which is caused by an imbalance of charges on either side of the membrane. Ion channel – is a protein embedded in the plasma membrane that allows ions to pass through it. Cells maintain a pos ...
... Conduction of Electrical Signals by Neurons Membrane potential – is the electrical potential of a membrane, which is caused by an imbalance of charges on either side of the membrane. Ion channel – is a protein embedded in the plasma membrane that allows ions to pass through it. Cells maintain a pos ...
MoFlo Fluorescence Resonance Energy Transfer E T
... Cell Sorter, researchers can acquire information about molecular proximity at rates exceeding 100,000 data points/second. They also can collect cells of interest at rates approaching 70,000 cells/second.4 ...
... Cell Sorter, researchers can acquire information about molecular proximity at rates exceeding 100,000 data points/second. They also can collect cells of interest at rates approaching 70,000 cells/second.4 ...
CHAPTER 3: CELLS
... higher concentrations toward regions where they are in lower concentrations (i.e. down a concentration gradient). A state of equilibrium is produced! Examples: ...
... higher concentrations toward regions where they are in lower concentrations (i.e. down a concentration gradient). A state of equilibrium is produced! Examples: ...
Document
... • How can muscle cells maintain (or keep) a high concentration of potassium inside the cell? • If a cell increases or decreases in volume, what type of transport must happen? • Building blocks of carbohydrates? • Building blocks of proteins? • Function of the nucleus? ...
... • How can muscle cells maintain (or keep) a high concentration of potassium inside the cell? • If a cell increases or decreases in volume, what type of transport must happen? • Building blocks of carbohydrates? • Building blocks of proteins? • Function of the nucleus? ...
Unit Cell
... A crystal is an array of atoms packed together in a regular pattern. A unit cell of a pattern is a piece of the pattern which, when repeated through space without rotation and without gaps or overlaps, reconstructs the pattern to infinity. For filling space without holes, a unit cell must be either ...
... A crystal is an array of atoms packed together in a regular pattern. A unit cell of a pattern is a piece of the pattern which, when repeated through space without rotation and without gaps or overlaps, reconstructs the pattern to infinity. For filling space without holes, a unit cell must be either ...
Helping students understand cell ultrastructure with
... Image viewer is now freely available throughout the university as a plug-in to UniTube (file sharing system, wide range of file types including images, videos and audio files). Once uploaded the UniTube URL can be shared or embed it into Blackboard or any other website. ...
... Image viewer is now freely available throughout the university as a plug-in to UniTube (file sharing system, wide range of file types including images, videos and audio files). Once uploaded the UniTube URL can be shared or embed it into Blackboard or any other website. ...
View Full PDF - Biochemical Society Transactions
... medium composition. Many of these responses involve alterations in gene expression. The majority of these alterations occur at the level of mRNA transcription by the repression or activation of the transcription of many genes that encode enzymes implicated in carbon metabolism [1–3]. Present knowled ...
... medium composition. Many of these responses involve alterations in gene expression. The majority of these alterations occur at the level of mRNA transcription by the repression or activation of the transcription of many genes that encode enzymes implicated in carbon metabolism [1–3]. Present knowled ...
transcript
... 04:46 OK, so killing is good and killing is also bad, and in this particular slide here we can see and individual injecting him or herself with insulin because they are a type 1 diabetic and the tissue damage of the cells that basically produce insulin in autoimmune diabetes is perforin mediated, an ...
... 04:46 OK, so killing is good and killing is also bad, and in this particular slide here we can see and individual injecting him or herself with insulin because they are a type 1 diabetic and the tissue damage of the cells that basically produce insulin in autoimmune diabetes is perforin mediated, an ...
Notes: Cell Division & the Cell Cycle (Ch. 12)
... ● Somatic (nonreproductive) cells have two sets of chromosomes (DIPLOID) ● Gametes (reproductive cells: sperm and eggs) have half as many chromosomes as somatic cells ...
... ● Somatic (nonreproductive) cells have two sets of chromosomes (DIPLOID) ● Gametes (reproductive cells: sperm and eggs) have half as many chromosomes as somatic cells ...
File
... of mitosis should be known. To avoid confusion in terminology, teachers are encouraged to refer to the two parts of a chromosome as sister chromatids, while they are attached to each other by a centromere in the early stages of mitosis. From anaphase onwards, when sister chromatids have separated to ...
... of mitosis should be known. To avoid confusion in terminology, teachers are encouraged to refer to the two parts of a chromosome as sister chromatids, while they are attached to each other by a centromere in the early stages of mitosis. From anaphase onwards, when sister chromatids have separated to ...
What to Know for the Evolution Test
... Know that water takes extra energy to heat compared to most substances and therefore resists temperature changes. Acids, bases (alkaline), pH scale Know the basic characteristics and possible functions of the following organic molecules: carbohydrates (monosaccharides, disaccharides, and polys ...
... Know that water takes extra energy to heat compared to most substances and therefore resists temperature changes. Acids, bases (alkaline), pH scale Know the basic characteristics and possible functions of the following organic molecules: carbohydrates (monosaccharides, disaccharides, and polys ...
(LB) domain
... endocrine glands and travel in the blood to act at distant sites (systemic action) - On the other hand, growth factors and cytokines are produced throughout the body by numerous cell types and they can act both locally and systemically - Be aware that the terms hormones, growth factors and cytokines ...
... endocrine glands and travel in the blood to act at distant sites (systemic action) - On the other hand, growth factors and cytokines are produced throughout the body by numerous cell types and they can act both locally and systemically - Be aware that the terms hormones, growth factors and cytokines ...
characterization of procaryotic cells inner structures in bacteria
... membrane structure whose facing surfaces correspond to the cell wall-synthesizing surface of the cell envelope. The growing points move progressively toward the pole of the cell so as to engulf the developing spore. ...
... membrane structure whose facing surfaces correspond to the cell wall-synthesizing surface of the cell envelope. The growing points move progressively toward the pole of the cell so as to engulf the developing spore. ...
Knox RTN in PD final accepted revision with figures
... Blackman, 1996; Maule, 2008; Tilsner et al., 2011). The desmotubule is an enigmatic structure whose function has not been fully elucidated. The small spiralling space between the desmotubule and the plasma membrane, known as the cytoplasmic sleeve, is almost certainly a conduit for movement of small ...
... Blackman, 1996; Maule, 2008; Tilsner et al., 2011). The desmotubule is an enigmatic structure whose function has not been fully elucidated. The small spiralling space between the desmotubule and the plasma membrane, known as the cytoplasmic sleeve, is almost certainly a conduit for movement of small ...
Level What I need to be able to do… Covered Cell structure 4/5
... Describe the structure of the cell membrane Explain what happens during diffusion Explain what happens during osmosis Describe the effects of different water concentrations on animal and plant cells Explain the difference between passive and active transport Producing New Cells Describe what happens ...
... Describe the structure of the cell membrane Explain what happens during diffusion Explain what happens during osmosis Describe the effects of different water concentrations on animal and plant cells Explain the difference between passive and active transport Producing New Cells Describe what happens ...
biochem ch 49 [2-9
... Major cellular receptors for ECM proteins and provide link between internal cytoskeleton of cells (primarily actin microfilament system) and extracellular proteins, such as fibronectin, collagen, and laminin Consist of an α and β-subunit – 24 different combinations discovered Integrins involve ...
... Major cellular receptors for ECM proteins and provide link between internal cytoskeleton of cells (primarily actin microfilament system) and extracellular proteins, such as fibronectin, collagen, and laminin Consist of an α and β-subunit – 24 different combinations discovered Integrins involve ...
Plant Cell Differentiation
... system required for the regulated transport of water and nutrients. They develop from procambial or cambial cells (i.e cells of the secondary meristem surrounding the vascular tissue) or can be induced to form from parenchymal cells by wound stress. Transdifferentiation from parenchymal cells into xy ...
... system required for the regulated transport of water and nutrients. They develop from procambial or cambial cells (i.e cells of the secondary meristem surrounding the vascular tissue) or can be induced to form from parenchymal cells by wound stress. Transdifferentiation from parenchymal cells into xy ...
CYTOSKELETON
... muscle resulting in opening of sodium/potassium channel (sodium rush in, potassium rush out) 5) action potential (nerve signal) spreads through muscle fiber's network of T tubules (invagination of membrane) and depolarizes the inner portion of the muscle fiber ...
... muscle resulting in opening of sodium/potassium channel (sodium rush in, potassium rush out) 5) action potential (nerve signal) spreads through muscle fiber's network of T tubules (invagination of membrane) and depolarizes the inner portion of the muscle fiber ...
CYTOSKELETON
... muscle resulting in opening of sodium/potassium channel (sodium rush in, potassium rush out) 5) action potential (nerve signal) spreads through muscle fiber's network of T tubules (invagination of membrane) and depolarizes the inner portion of the muscle fiber ...
... muscle resulting in opening of sodium/potassium channel (sodium rush in, potassium rush out) 5) action potential (nerve signal) spreads through muscle fiber's network of T tubules (invagination of membrane) and depolarizes the inner portion of the muscle fiber ...
The Cell Cycle Control System
... released by certain cells that stimulate other cells to divide • Another example of external signals is density-dependent inhibition, in which crowded cells stop dividing • Most animal cells also exhibit anchorage dependence, in which they must be attached to a substratum in order to ...
... released by certain cells that stimulate other cells to divide • Another example of external signals is density-dependent inhibition, in which crowded cells stop dividing • Most animal cells also exhibit anchorage dependence, in which they must be attached to a substratum in order to ...
Cytosol
The cytosol or intracellular fluid (ICF) or cytoplasmic matrix is the liquid found inside cells. It is separated into compartments by membranes. For example, the mitochondrial matrix separates the mitochondrion into many compartments.In the eukaryotic cell, the cytosol is within the cell membrane and is part of the cytoplasm, which also comprises the mitochondria, plastids, and other organelles (but not their internal fluids and structures); the cell nucleus is separate. In prokaryotes, most of the chemical reactions of metabolism take place in the cytosol, while a few take place in membranes or in the periplasmic space. In eukaryotes, while many metabolic pathways still occur in the cytosol, others are contained within organelles.The cytosol is a complex mixture of substances dissolved in water. Although water forms the large majority of the cytosol, its structure and properties within cells is not well understood. The concentrations of ions such as sodium and potassium are different in the cytosol than in the extracellular fluid; these differences in ion levels are important in processes such as osmoregulation, cell signaling, and the generation of action potentials in excitable cells such as endocrine, nerve and muscle cells. The cytosol also contains large amounts of macromolecules, which can alter how molecules behave, through macromolecular crowding.Although it was once thought to be a simple solution of molecules, the cytosol has multiple levels of organization. These include concentration gradients of small molecules such as calcium, large complexes of enzymes that act together to carry out metabolic pathways, and protein complexes such as proteasomes and carboxysomes that enclose and separate parts of the cytosol.