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7-2 Eukaryotic Cell Structure
7-2 Eukaryotic Cell Structure

... Nearly all eukaryotic cells contain mitochondria. Mitochondria convert the chemical energy stored in food into compounds that are more convenient for the cell to use. ...
The intracellular cyanobacteria of Paulinella chromatophora
The intracellular cyanobacteria of Paulinella chromatophora

... and excrete essential amino acids into the host cytosol [10,11]. Although, in some cases, ‘dead-end’ bacterial cells with incomplete genomes are replaced by new endosymbionts [10], this is not the case for the bacteriocyte Carsonella ruddii. The genome of Carsonella is reduced to a mere 160 kb (with ...
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Cell 2

... latter definition also suffices for Cell if the genus is changed. Cell Anatomical structure which has as its direct parts maximally connected portions of cytoplasm and plasma membrane. Examples: hepatocyte, erythroblast, skeletal muscle fiber, megakaryocyte, ...
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The Cell Membrane

... Active Transport  Cells may need to move molecules against concentration gradient ...
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... due to random molecular motion. All atoms and molecules possess kinetic energy, which is the energy of movement. It is this kinetic energy that makes each atom or molecule vibrate and move around. (In fact, you can quantify the kinetic energy of the atoms/molecules in a substance by measuring its te ...
Were Gram-positive rods the first bacteria?
Were Gram-positive rods the first bacteria?

... develop a means of forming an enclosing strong murein sacculus. Several other mechanisms must also have arisen. A mechanism that prevents wall growth in the established poles of cells is a key requirement. A mechanism that causes a pole to be metabolically inert provides a way to maintain the size a ...
CELL PARTS Chapter 4 - local.brookings.k12.sd.us
CELL PARTS Chapter 4 - local.brookings.k12.sd.us

... HYDROPHOBIC “tails” of phospholipids make molecules line up as out & LIPID ________________ with POLAR heads facing _______ BILAYER NON-POLAR tails facing ________ in MEMBRANE PROTEINS PERIPHERAL •____________________stick on inside or outside surface •____________________go part way or all the way ...
CELL PARTS Chapter 4 - Brookings School District
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... HYDROPHOBIC “tails” of phospholipids make molecules line up as out & LIPID ________________ with POLAR heads facing _______ BILAYER NON-POLAR tails facing ________ in MEMBRANE PROTEINS PERIPHERAL •____________________stick on inside or outside surface •____________________go part way or all the way ...
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... • Active transport moves substances against their concentration gradients • Active transport requires energy, usually in the form of ATP • Active transport is performed by specific proteins embedded in the membranes • Active transport allows cells to maintain concentration gradients that differ from ...
Endosymbiosis, a Proven Theory or Evolution Myth?
Endosymbiosis, a Proven Theory or Evolution Myth?

... thylakoids and particular chlorophylls) is very similar to that of cyanobacteria. Phylogenetic estimates constructed with bacteria, plastids, and eukaryotic genomes also suggest that plastids are most closely related to cyanobacteria (3). Plastids are present in very different groups of protists, so ...
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Lab 9-Proeukaryote

... They range from small unicellular and simple, to large, multicellular and complex. They come in a variety of colours and can be found living alone, in colonies or in association with others (Paramecium, seaweeds, lichens). Algae are food suppliers, oxygen producers and some are nitrogen fixers. Thes ...
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... muramic acid is absent, and the polymer differs profoundly from bacterial peptidoglycan (29). Instead, archaeal cell walls are most often composed solely of S-layers (26). These are monolayers of a single protein that provide the cell with structural integrity and shape. S-layers are components of m ...
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Characterization of cellulolytic bacterial cultures grown in different

... mannanase activities were determined using different substrates and after SSF of PKC. The SSF was conducted for 4 and 7 days with inoculum size of 10% (v/w) on different PKC concentration-to-moisture ratios: 1 : 0.2, 1 : 0.3, 1 : 0.4, and 1 : 0.5. Results showed that Bacillus amyloliquefaciens 1067  ...
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... certain cells – Contain microtubules and motor molecules – Cilia move substances across cell surfaces – Longer flagella propel whole cells (tail of sperm) ...
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... over the fruits and vegetables? You might have wondered why plants that already been picked need water. The reason for misting the produce is to keep it from wilting. The water droplets land on the produce and pass into the plant’s cells. A cell must take in water to carry out its life processes. A ...
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... Classifying Prokaryotes The smallest and most common microorganisms are prokaryotes, which are unicellular organisms that lack a nucleus. Prokaryotes are classified either in domain Bacteria or domain Archaea. They can be surrounded by a cell wall, which contains peptidoglycan. Inside the cell wall ...
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... -Consumers of algae consume sugars and lipids for energy -Lipids are needed by algae for buoyancy in water 3. Cellular Organization -Nucleus, mitochondria, chloroplast, set up establishes evolutionary trail. 4. Molecular Phylogeny -Evolution into different organisms from a primary source. 5. Morphol ...
The Cell Membrane
The Cell Membrane

... Use this site to watch the animation and take a short quiz. How the Sodium-Potassium Pump Works Be sure to read about the Na+ - K+ pump in your book. It outlines the steps very clearly. 4. Explain (in detail) how the sodium potassium pumps works. 5. Name the organs (or tissues) in the human body tha ...
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... Classifying Prokaryotes The smallest and most common microorganisms are prokaryotes, which are unicellular organisms that lack a nucleus. Prokaryotes are classified either in domain Bacteria or domain Archaea. They can be surrounded by a cell wall, which contains peptidoglycan. Inside the cell wall ...
Document
Document

... listed on the next page. Choose your list of organelles based upon whether or not you want to make a poster of a plant cell or an animal cell (for this assignment, each has the same number of organelles). The key to earning the maximum number of points for this assignment is to be as accurate as you ...
Pdf - Text of NPTEL IIT Video Lectures
Pdf - Text of NPTEL IIT Video Lectures

... Now, if we see the entire bacterial world based on its shape, the bacteria can be categorized. And, if we see its shape, you will find that, some of this bacteria are round or spherical in nature, some are rod and some are spiral in nature. Now, this are the, this, this are some of this classificat ...
Jeopardy
Jeopardy

... If numerous heart cells want to come together to form heart tissue, leading to the development of an actual heart, what component of the membrane plays a significant role in this process? ...
EDIBLE ANIMAL CELL
EDIBLE ANIMAL CELL

... Name: ___________________________________ Class: _________ Date: _______ ...
< 1 ... 43 44 45 46 47 48 49 50 51 ... 265 >

Flagellum



A flagellum (/fləˈdʒɛləm/; plural: flagella) is a lash-like appendage that protrudes from the cell body of certain prokaryotic and eukaryotic cells. The word flagellum in Latin means whip. The primary role of the flagellum is locomotion but it also often has function as a sensory organelle, being sensitive to chemicals and temperatures outside the cell. Flagella are organelles defined by function rather than structure. There are large differences between different types of flagella; the prokaryotic and eukaryotic flagella differ greatly in protein composition, structure, and mechanism of propulsion. However, both are used for swimming.An example of a flagellate bacterium is the ulcer-causing Helicobacter pylori, which uses multiple flagella to propel itself through the mucus lining to reach the stomach epithelium. An example of a eukaryotic flagellate cell is the mammalian sperm cell, which uses its flagellum to propel itself through the female reproductive tract. Eukaryotic flagella are structurally identical to eukaryotic cilia, although distinctions are sometimes made according to function and/or length.
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