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Cooking up Life`s Ingredients
Cooking up Life`s Ingredients

... Yet rocks that formed on Earth 3.8 billion years ago, almost as soon as the bombardment had stopped, contain possible evidence of biological processes. If life can arise from inorganic matter so quickly and easily, why is it not abundant in the solar system and beyond? If biology is an inherent prop ...
Reading - Science with Ms. Wang
Reading - Science with Ms. Wang

... through peptide bonds. The type of protein, and thus its function, is determined by the kind of amino acids joined together and the order in which those amino acids are arranged. Some proteins are very large molecules, containing hundreds of amino acids. Often these long proteins are bent and folded ...
Cellular Transport: Movement of substances into and out of the cell
Cellular Transport: Movement of substances into and out of the cell

... FACILITATE: -means to help DIFFUSION: -form of diffusion so……………… -items move from a high concentration into a lower concentration. ...
Emerging biological roles of Cl− intracellular channel proteins
Emerging biological roles of Cl− intracellular channel proteins

... In CLIC4, agonist-induced recruitment to the plasma membrane is abolished by mutation of those residues, which – in GSTs – are crucial for substrate binding (Ponsioen et al., 2009). These results strongly suggest that the substrate-binding features of the omegaclass of GSTs have been conserved in CL ...
Electrical Properties of Neuron
Electrical Properties of Neuron

... charged molecules and so acts as a capacitor by separating the charges lying on either side of the membrane.  NB Capacitors, store charge across an insulating medium. Don’t allow current to flow across, but charge can be redistributed on each side leading to current flow.  The ion channels are pro ...
File
File

... A. The tissues of the saltwater fish would absorb too much acid. B. The organs of the saltwater fish would produce too much protein. C. The organ systems of the saltwater fish would consume too much energy. D. The cells of the saltwater fish would gain too much water. ...
Diffusion & Osmosis
Diffusion & Osmosis

... with no salt or sugar in it). Because there is a higher concentration of water outside the cell, water enters the cell by OSMOSIS. In this case too much water enters and the cell swells to the point of bursting open. In the end pieces of cell membrane are left in the water. ...
Nervous Systems
Nervous Systems

... • Step 2: A stimulus causes some Na+ ion channels to open allowing Na+ to diffuse through the membrane. This causes the membrane to be depolarized. The depolarization causes even more Na+ ion channels to open (positive feedback) until a threshold is reached in the membrane potential • Step 3: Once t ...
C2006/F2402 `14 Outline Of Lecture #2 -
C2006/F2402 `14 Outline Of Lecture #2 -

...     (1). Each antibody has a variable part -- complementary in fit to epitope (in this case, epitope = small part of a protein.)     (2). Each antibody has a constant part -- constant in all antibodies of that class from that species. d. Why use Antibodies for detection? Many methods identify (or ch ...
Neuroanatomy Part 2
Neuroanatomy Part 2

... Taste and smell are often associated. This is because odors from food will pass through the nasopharynx and nasal cavity and stimulate the olfactory receptors. A given concentration of a substance will stimulate the olfactory system thousand times more than taste. Each taste bud is an oval body made ...
Where is energy stored in biomolecules like sugars, carbs, lipids, etc.
Where is energy stored in biomolecules like sugars, carbs, lipids, etc.

... A little heat can speed up a reaction by making the molecules move faster---- ...
Methods of Transport Across a Cell Membrane
Methods of Transport Across a Cell Membrane

... – Sunning– Buffers in our blood-protect against large changes in pH in blood – Roots on a plant-absorb nutrients and water – Leaves on a plant-trans-respiration, photosynthesis – Digestive System- breaks down food to provide ...
Cell Membrane Transport: Osmosis
Cell Membrane Transport: Osmosis

... area of higher concentration to an area of lower concentration. • In a cell, water always moves to reach an equal concentration on both sides of the membrane. ...
Chapter 5
Chapter 5

... Each protein has its own specific number of amino acids and in its own unique order ...
Protein folding: mechanisms and role in disease - Max
Protein folding: mechanisms and role in disease - Max

... separately. The folding process is thermodynamically driven by the hydrophobic effect, basically the tendency of the water-rejecting (hydrophobic) amino acids to interact with one another and form a hydrophobic core while the water-loving (hydrophilic) amino acids remain at the surface. As a result ...
MPB IPG - E
MPB IPG - E

... D) scanning electron microscope (SEM) 9. An amino sugar called N-acetylmuramic acid is an important building block of the cell wall of some bacteria. Penicillin prevents this amino sugar from being incorporated into the bacterial cell wall. Therefore, A) penicillin affects bacteria but not eukaryot ...
Chapter 10 Cell Growth and Division
Chapter 10 Cell Growth and Division

... 3. Cancer is a disorder in which some of the body’s own cells lose the ability to control growth ...
Chapter 3 - Palm Beach State College
Chapter 3 - Palm Beach State College

... molecules, production of second messengers • Channel proteins—allow hydrophilic solutes and water to pass through membrane – Some are always open, some are gated • Ligand-gated channels—respond to chemical messengers • Voltage-gated channels—respond to charge changes • Mechanically-gated channels—re ...
Immune/Lymphatic
Immune/Lymphatic

... T-Helper Lymphocyte A lymphocyte that amplifies the normal immune response. When stimulated by an antigen-presenting cell, such as a macrophage, T-helper cells release factors that stimulate the proliferation of B lymphocytes and attract cells key to the immune response. B Lymphocyte A type of white ...
蛋白質工程於生物技術 之應用與發展 Protein Engineering
蛋白質工程於生物技術 之應用與發展 Protein Engineering

... "Fluorescent Timer": Protein That Changes Color with Time A fluorescent protein that changes color with time was generated from the red fluorescent protein (RFP) Science, 24 November, 2000, Vol.290:1585-1599. ...
Cell Cycle
Cell Cycle

... visible. They are uncoiled. When the DNA is in this uncoiled form it’s called chromatin. The reason it’s uncoiled is this allows it to be copied more easily. ...
fat-soluble
fat-soluble

... NADH produced by glycolysis in skeletal muscle fibers leads to production of two ATP molecules in mitochondria, but NADH produced by glycolysis in cardiac muscle cells leads to production of three ATP molecules. Why? ...
Chapter 25 - FacultyWeb
Chapter 25 - FacultyWeb

... NADH produced by glycolysis in skeletal muscle fibers leads to production of two ATP molecules in mitochondria, but NADH produced by glycolysis in cardiac muscle cells leads to production of three ATP molecules. Why? ...
Concept 1 - Phillips Scientific Methods
Concept 1 - Phillips Scientific Methods

... and propose an explanation for it. As the substrate concentration increases, the rate of the reaction increases, then stabilizes. This is likely because initially, adding more substrate increases enzyme activity as there are more reactants to bind with. At a certain point, the enzymes become saturat ...
Cell Division Jeopardy Cheat Sheet
Cell Division Jeopardy Cheat Sheet

... In this phase, the cell cytoplasm is divided into two parts. Telophase This is a phase in which the cell is not dividing, but carrying out its normal functions. Interphase In this phase, the chromatids are lined up at the center of the cell. Metaphase This is an indentation or “pinched in” area on t ...
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Signal transduction



Signal transduction occurs when an extracellular signaling molecule activates a specific receptor located on the cell surface or inside the cell. In turn, this receptor triggers a biochemical chain of events inside the cell, creating a response. Depending on the cell, the response alters the cell's metabolism, shape, gene expression, or ability to divide. The signal can be amplified at any step. Thus, one signaling molecule can cause many responses.
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