shows a drawing of an electron micrograph of a cell. Which structures are surrounded by double membranes? Golgi apparatus lysosome mitochondrion nucleus cytoplasm A ✓ ✓ ✓ ✓ ✓ B ✓ ✗ ✗ ✗ ✗ C ✗ ✗ ✓ ✓ ✗ D ✗ ✓ ✗ ✗ ✓ 3 In which animal cells would Golgi apparatus be most abundant? A ciliated epithelial cells B goblet cells C red blood cells D smooth muscle cells 5 Which is a feature of all prokaryotic cells? A absence of cell surface membrane B division by mitosis C presence of mitochondria
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Active transport and Passive transport are biological functions that carry water‚ nutrients‚ and oxygen into cells and for the removal of waste in the cell. Active transport utilizes chemical energy to move substances from lower concentrations to higher concentrations. Whereas Passive transport moves substances from areas of high concentration to areas of low concentration‚ and it does not need to use energy. Active transport uses a chemical called ATP as its energy source in its functions. Without
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Physiologic Fluid Compartments The major fluid compartments in the body are intracellular and extracellular fluid. Both compartments consist of oxygen‚ dissolved nutrients‚ carbon dioxide‚ and ions. Intracellular fluid (ICF) is the fluid located inside the cells of the body and is vital to normal
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permeability of the membranes of beetroot tissue Problem: To compare the denaturation of membrane of cells in the effect of mouth rinse of different brands and find out which brand of mouth rinse damages the membrane of cells most. Therefore ‚ the health risk of mouth rinse can be known. denaturation is used to describe protein only‚ not a membrane. --> destruction Hypothesis: The pigment in beetroot is permeable to the chemicals in the mouth rinse Principles: The plasma membrane is made up of
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GROWTH SIGNAL TRANSDUCTION SURVIVAL DIFFERENTIATION shapeType75fBehindDocument1pWrapPolygonVertices8;6;(11973‚21500);(0‚21500);(0‚0);(21500‚0);(21500‚16702);(11973‚16702)posrelh0posrelv0pib MIGRATION PROLIFERATION Membrane Receptor Classes shapeType75fBehindDocument1pWrapPolygonVertices8;20;(6276‚4387);(6342‚4387);(6342‚6755);(7675‚6755);(7675‚9913);(9270‚9913);(9270‚7632);(14603‚7632);(14603‚6142);(21499‚6142);(21499‚21500);(0‚21500);(0‚6316);(2829‚6316);(2829‚4387);(3869
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Ligand binding assays are an analytical procedure‚ whose method relies on the binding of specific ligand molecules to receptors‚ antibodies or other macromolecules (Hulme et al.‚ 2010). The analysis of radioligand binding assays are based on a simple model‚ called the law of mass action‚ which assumes that binding to the receptors are reversible. The binding to the receptors occurs when the ligand and the receptor collide by diffusion and when the collision has enough energy and the correct orientation
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Bridges Between Cells Unlocking New Understandings Inside Them Though most mammals‚ including humans‚ are born with one skin colour for the rest of their lives‚ there lives a variety of species that are able to change their colour in order to blend in with their surroundings. Amphibians‚ fish‚ and reptiles make up a large component of these animals‚ with the chromatophore organelle present within their cells that allows them to rapidly change colour. One of the few classifications of this organelle
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then respond and influence the degree to which the stimuli restore the affected variable to homeostasis. Examples of homeostatic control systems CELL VOLUME HOMEOSTASIS All cells face a critical problem in the maintenance of a constant volume in the face of extracellular and intracellular fluctuations. These fluctuations can result in cell volume increase or decrease. These are generally swelling and shrinkage respectively.
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in the environment. Transport inside cells and moving the body. Control their internal conditions. Increasing the number of organisms. Increasing the number of cells. Variety of Living Organisms Plants: o o o o o o Multicellular organisms Contain chloroplasts and are able to carry out photosynthesis Have cellulose walls outside the cell walls to provide support to the cell Store carbohydrates as starch and sucrose Have large permanent vacuoles filled with cell sap that contains water and dissolved
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process by which hormones can cause certain genes to be turned on. (4) Any 2 from: - A hormone binds to a receptor in the cell surface membrane - Idea of the receptor causing (chemical) changes inside the cell - A (functional) {second messenger} activates an {enzyme/transcription factor/eq} Any 2 from: - Idea of a hormone entering the cell through the cell membrane - The hormone binds to a receptor - The {hormone-receptor complex/eq} acts as a transcription factor What is the negative
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