The Characteristics of Life There are many properties or the signs of life that the living organisms have. In the book of biology of Mrtinez and Nazareno‚ there are nine characteristics of life just said and those are : a. Living things are highly organized and contain many complex chemical substances ; b. Living things are made up of one or more cells‚ which are the smallest unit that can be said to be alive; c. Living things use energy; d. Living thins have definite
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contain chemicals‚ as well as cancer-causing substances. Tar is brown and sticky posing stains on fingernails‚ teeth‚ and lung tissue. Carbon monoxide This gas is deadly if consumed in large amount because it replaces oxygen in the red blood cell. Red blood cell contains haemoglobin that transports oxygen molecules from the lungs to other parts of the body. On the other hand‚ haemoglobin has higher affinity to carbon monoxide as compared to oxygen. This shows that less oxygen reaches the brain‚ muscles
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First aired in January 1977‚ Roots‚ a dramatic factional TV miniseries captured the minds and hearts of the nearly 80 million people who watched (Bird 94). The series was based on the book Roots by Alex Haley; both depict his family tree going back eight generations (on his mother’s side) when his family was still in Africa. The story begins with Kunta Kinte begin a young man in the Juffree village‚ Gambia‚ West Africa who was taken from his village to become cargo on the Lord Ligonier; a ship that
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Biology exam review 2.1 Kingdom King Phylum Philip Class Came Order Over Genus Germany Species South Domain Bacteria Archea Eukarya Kingdom Eubacteria Archeabacteria Protista‚ Fungi‚ Plantae‚ Animalia. # of cells Prokaryote Prokaryote Eukaryote Cell structure Cell walls made of peptidolglycan (coat of sugars) Cell walls without peptidoglycan Fungi-cell walls with chitin. Protista-cell walls of cellulose in some‚ and in others chloroplasts. Plantae-cell walls
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CHAPTER 12- THE CELL CYCLE I. Concept 12.1- Cell division results in genetically identical daughter cells A. Overview 1) The continuity of life is based on the reproduction of cells or cell division. 2) The cell division process is an integral part of the cell cycle‚ the life of a cell from the time it is first formed from a dividing parent cell until its own division into two cells. B. Cellular Organization of the Genetic Material 1) A cell’s endowment of DNA‚ its genetic
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DEFINITIONS * Biology is a natural science concerned with the study of life and living organisms‚ including their structure‚ function‚ growth‚ evolution‚ distribution‚ and taxonomy. * The cell is the basic structural and functional unit of all known living organisms. It is the smallest unit of life that is classified as a living thing (except virus‚ which consists only from DNA/RNA covered by protein and lipids)‚ and is often called the building block of life. Organisms can be classified
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Bio 93 Review Sheet: 1. Understand all the THEMES presented in the introductory lecture (lec 1). 2. What is an open system? Energy in and out‚ comes in and leaves as heat 3. What are the 4 most important elements in the human body? C‚ O‚ N‚ H 4. Draw the periodic square for Helium. How many valence electrons does it have? How do you figure this out using the periodic table? Two valence e-‚ 23He‚ all the way right full shell only holds two electrons 5. What is an isotope? How are they used
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CARIBBEAN EXAMINATIONS COUNCIL Car ib b e an Se con d ar y Ed ucat ion Ce r t if icat e ® CSEC® BIOLOGY SYLLABUS a) Effective for examinations from May–June 2015 NCH 2.SYLLABUS CXC 20/G/SYLL 13 Published by the Caribbean Examinations Council All rights reserved. No part of this publication may be reproduced‚ stored in a retrieval system‚ or transmitted in any form‚ or by any means electronic‚ photocopying‚ recording or otherwise without prior permission of the author or
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`Biology B1 Revision Classification • Organisms were based into groups based on their characteristics (classification). • Kingdom‚ Phylum‚ Class‚ Order‚ Family‚ Genus‚ Species Kingdom Main Characteristics Animalia Multicellular; heterotrophic feeders so no chlorophyll‚ no cell walls; complex cell structure with nucleus Plantae Multicellular; autotrophic feeders using chlorophyll; cell walls made of cellulose; complex cell structure with nucleus Fungi Multicellular; cell walls not made
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Binnig and Heinrich Rohrer in 1981; the Scanning Tunneling Microscope used quantum tunneling to extract atomically resolved images to understand the morphology of crystalline surfaces including both atomic structures and electron arrangement. The STM tip produced in this experiment acts as a needle that hovers above the crystalline material surfaces (perfect atomic structural patterns) with nanoscale accuracy‚ while emitting electrons from a few nanometers above the surface of the crystalline materials
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