Chapter 3 Cell Function and Structure Wonder Drug j What You Will Be Learning 3.1 How Penicillin Was Discovered 3.2 Cell Theory: All Living Things Are Made of Cells 3.3 Membranes: All Cells Have Them 3.4 Prokaryotic and Eukaryotic Cells Have Different Structures 3.5 Some Antibiotics Target Bacterial Cell Walls 3.6 Some Antibiotics Inhibit Prokaryotic Ribosomes 3.7 Molecules Move across the Cell Membrane 3.8 Eukaryotic Cells Have Organelles UP CLOSE Eukaryotic Organelles
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Anatomy Review: Skeletal Muscle Tissue Graphics are used with permission of: Pearson Education Inc.‚ publishing as Benjamin Cummings (http://www.aw-bc.com) Page 1. Introduction • Skeletal muscle cells have unique characteristics which allow for body movement. Page 2. Goals • To compare and contrast smooth muscle cells‚ cardiac muscle cells‚ and skeletal muscle cells. • To review the anatomy of skeletal muscle. • To examine the connective tissue associated with the skeletal muscle.
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three terms with their definitions: 1. Sarcolemma __2_ endoplasmic reticulum in muscle cell 2. Sarcoplasmic reticulum __3__ intracellular fluid around organelles 3. Cytosol _1___ plasma membrane of muscle cell 6. Match the following three terms with their definitions: 1. Terminal cisternae __3__ T tubule + 2 terminal cisternae 2. T tubules __2__ part of sarcolemma—carries action potential 3. Triad __1__ part of sarcoplasmic reticulum—stores calcium ions 7. Myofibrils consist of contractile
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Eukaryotes are organisms whose cells are organized into complex structures by internal membranes and a cytoskeleton. The most characteristic membrane bound structure is the nucleus. This feature gives them their name‚ (also spelled "eucaryote‚") which comes from the Greek word referring to the nucleus. Animals‚ plants‚ fungi‚ and protists are eukaryotes. Microorganisms and all other living organisms are classified as prokaryotes or eukaryotes. Prokaryotes and eukaryotes are distinguished on the
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The cell is the fundamental structural unit of all living organisms. Some cells are complete organisms‚ such as the unicellular bacteria and protozoa; others‚ such as nerve‚ liver‚ and muscle cells‚ are specialized components of multi-cellular organisms. Cells range in size from the smallest bacteria-like mycoplasmas‚ which are 0.1 micrometer in diameter‚ to the egg yolks of ostriches‚ which are about 8 cm (about 3 in) in diameter. Although they may differ widely in appearance and function‚ all cells
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measure the resolution you multiply the magnification of the eyepiece by the multiplication of the lens. 3) * Nucleus- regulates cell activity. * Nucleolus- contains DNA‚ assembles Ribosomes. * Endoplasmic Reticulum Smooth- does the synthesis of lipids. * Endoplasmic Reticulum Rough- is responsible for protein manufacturing. * Vacuoles- accumulates excess water and pumps it out to pores. * Golgi Apparatus- sorts‚ packages and transports substances. * Vesicles- * Lysosomes-
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Biology‚ 7e (Campbell) Chapter 6: A Tour of the Cell Chapter Questions 1) All of the following are part of a prokaryotic cell except A) DNA. B) a cell wall. C) a plasma membrane. D) ribosomes. E) an endoplasmic reticulum. Answer: E Topic: Concept 6.2 Skill: Knowledge 2) The volume enclosed by the plasma membrane of plant cells is often much larger than the corresponding volume in animal cells. The most reasonable explanation for this observation is that A) plant cells are capable
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MICHAEL OKPARA UNIVERSITY OF AGRICULTURE UMUDIKE (MOUAU) COLLEGE OF CROP AND SOIL SCIENCE (CCSS) DEPARTMENT OF AGRONOMY A TERM PAPER WRITTEN IN PARTIAL FULFILLMENT OF THE COURSE CGB 514 (CYTOGENETICS) TOPIC: PLANT CELL ORGANELLES AND THEIR FUNCTIONS‚ THE DIFFERENCES BETWEEN THE PLANT AND ANIMAL CELL BY ONUMAEGBU BRIGHT C MOUAU/08/11351 LECTURE: DR J N EKA
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the heart cells. The cells become leaky; Sodium slowly began to leak into the cell and potassium leaked out. C) The endoplasmic reticulum and the lysosomal enzymes are intracellular organelles that have membranes as part of their structure. When these membranes breakdown it affects the heart because calcium ATPases stops moving calcium from the cytosol into the endoplasmic reticulum of the cardiac muscle cells. When the intracellular calcim levels rise‚ it causes proteases to spill into the interior
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BIOLOGY TEST NOTES Biology is the study of life Living organisms share a set of characteristics that collectively set them apart from non-living matter Living organisms use molecules that contain instructions for building other molecules Living organisms gather energy and materias from their surrounding to: Build new biological molecules Grow in size Repair their parts Produce offspring All organisms are composed of the same macromolecules (proteins‚ fatty acids/lipids‚ carbs and nucleic
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