blastopore development) Only Cnidaria (sponges) and Ctenophora are diploblasty 32.4 The roots of the Animal Tree of Life 32.4.1 Metazoans appear to have evolved from colonial protists Evidence: Multicellular Colonial flagellated hypothesis 32.4.2 Molecular analysis may explain the Cambrian explosion Result of Cambrian explosion Emergence of new body plans Evolution of predation Developing in body part because of Hox genes Ex‚ leg‚ thorax‚ antennae 32.3.2 Animal Phyla with the Most Species
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in which prokaryotes differ substantially from eukaryotes? Unicellularity- fundamentally single-celled Cell Size- can vary (large range changes with species) Nucleoid- lack a membrane-bound nucleus but rather a nucleoid region Cell Division/Genetic Recombination- binary fission (does not use spindle) and do not have a sexual cycle Internal Compartmentalization- does not have internal compartments and no membrane organelles Flagella- no 9+2 structure Metabolic Diversity- photosynthesis (oxygenic/produce
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biology FOLIO BIOLOGY POLLUTION NIK ‘AINAA SYAKIRAH BT NIK GHAZALI 5 IBNU SINA INTRODUCTION Pollution is the introduction of contaminants into a natural environment that causes instability‚ disorder‚ harm or discomfort to theecosystem i.e. physical systems or living organisms. It can also be define as any undesirable changes in physical‚ chemical or biological characteristics of the natural environment‚ brought about when harmful substances or energy released by human activities. Pollution
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Mark Scheme (Results) Summer 2012 International GCSE Chemistry (4CH0) Paper 1C Science Double Award (4SC0) Paper 1C Edexcel Level 1/Level 2 Certificate Chemistry (KCH0) Paper 1C Science (Double Award) (KSC0) Paper 1C Edexcel and BTEC Qualifications Edexcel and BTEC qualifications come from Pearson‚ the world’s leading learning company. We provide a wide range of qualifications including academic‚ vocational‚ occupational and specific programmes for employers. For further information‚
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PROJECT WOODY 2000 BACKGROUND Customs and Woodworking Company base its activity on furniture manufacturing‚ custom millwork and hardwood importing. It is a family owned and managed company employing approximately 850 employees including Head Office staff and a manufacturing site staff in Someplace‚ BC. Yearly the total assets were $181million‚ $93.25 million in sales with net earnings of $6.54 million. Considering a mini-boom in commercial construction observed with the possibility of an airport
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Megan Adkins-Blanch 11/10/14 TA: David Stephens CHE 3652-003 Aldol Condensation: 4-methoxychalcone Abstract: To synthesize 4-methyoxychalcone. Reaction Mechanism: Table: Compound Molecular Weight (g/mol) Density (g/mL) Boiling Point (°C) Melting Point (°C) Amount used (g‚ mL‚ etc.) Acetophenone 120.16 1.03 201.7 19.7 1 ml 95% ethanol 46.07 0.8 79 -114 50% NaOH 40.2 1.53 140 12 Anisaldehyde 136.16 1.12 248 -1 1 ml Structures: Acetophenone: 95% ethanol: 50% NaOH: Anisaldehyde: MSDS:
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Name_______________________Period___________ Chapter 6: A Tour of the Cell Concept 6.1 Biologists use microscopes and the tools of biochemistry to study cells 1. The study of cells has been limited by their small size‚ and so they were not seen and described until 1665‚ when Robert Hooke first looked at dead cells from an oak tree. His contemporary‚ Anton van Leeuwenhoek‚ crafted lenses and with the improvements in optical aids‚ a new world was opened. Magnification and resolving power limit
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Genetics Experimental Analysis Set #2 Linkage 1. In gorgonzolas‚ there are three recessive traits that affect the organism’s appeal: shrunken fruit‚ foul-smelling flowers‚ and short height. A heterozygote was crossed with a homozygote‚ yielding the following offspring: 46 - foul-smelling 44 - shrunken fruit‚ short height 8 - short height 8 - shrunken fruit 7 - foul-smelling‚ short height 6 - foul-smelling‚ shrunken fruit 3 - foul-smelling‚ shrunken fruit‚ short
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1. Genetic cloning is one way of studying the specific proteins involved in cell division. A gene contains the instructions for how to make a protein. By mutating a gene‚ the protein’s shape‚ size and function could all be affected. Mutating a gene changes its instructions. Once a mutated gene is created and incorporated into a cell’s DNA‚ the cell replicates‚ creating many cells containing the mutant gene. The cells with the changed gene can then be compared to normal cells. For starters‚ you must
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Chemical Bonding and Molecular Structure 53 I. Structure of Matter (20%) B. Chemical bonding 1. Binding forces a. Types: ionic‚ covalent‚ metallic‚ hydrogen bonding‚ van der Waals (including London dispersion forces) c. Polarity of bonds‚ electronegativities 2. Molecular models a. Lewis structures TYPES OF CHEMICAL BONDING Ionic Bonding - two atoms of opposite charge electrically attracted to one another Covalent Bonding - two atoms each sharing electrons within a molecular orbital Metallic Bonding
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