Unit One: Animal Structures and Functions‚ Answers to Review Questions Respiratory System 1. Indicate the importance of gas exchange in all living organisms. Respiration is gas exchange (Oxygen and Carbon Dioxide) with the external environment. All living things respire. Gas exchange is important so that cellular respiration can take place and energy can be made for the cells. 2. Distinguish among the terms cellular respiration‚ external respiration and internal respiration
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Learning Pack for Biological Diversity – Unit 1 (Science in Action 9) Copyright 2005 – Developed by Edquest Resources (www.edquest.ca) 1 Learning Pack for Biological Diversity – Unit 1 (Science in Action 9) 2 ‘Focus in Action’ UNIT LEARNING PACKS These booklets are designed to provide Grade 9 students with all the resources needed to review or reinforce concepts‚ covered in the Alberta Science Curriculum‚ and included in the Grade 9 Science Final Exam in June. There are circumstances
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Control‚ Genome and Environment Cellular Control & Variation Cellular Control (a) state that genes code for polypeptides‚ including enzymes; (b) explain the meaning of the term genetic code; The sequence of the bases on a gene is a code with instructions for the construction of proteins. It has a number of characteristics: It is a triplet code- three bases code of an amino acid It is a degenerate code- All amino acids bar one have more than one code Some codes don’t code for amino acids
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Onda‚ Kristal H. TTH 8:30-10:00 am BSAC3 BIOLOGY 1. How plants grow and develop? Just as humans have essential needs for survival‚ all plants require several basic elements to grow and thrive‚ including… Soil minerals (the more nutrient-rich the soil‚ the better the plant will grow) Water Air (carbon dioxide‚ hydrogen and oxygen) Sunlight Proper soil temperature Proper air temperature How much a plant needs of each element initially depends on the plant’s original habitat. For example
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lubricated by a secretion from Bartholin’s glands. Eggs released in the ovaries reach the uterus via fallopian tubes. Production of gametes‚ gametogenesis‚ takes place in specialized tissues known as gonads. It occurs when cells in the tissue undergo meiosis. This process results in the division of the normal cells containing 46 chromosomes into cells containing 23 chromosomes. In males‚ it results in the formation of sperms. Sperms are formed in the testes‚ specifically in the seminiferous tubules. Immature
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structure. Darwin couldn’t explain 2 things thru his explanation of natural selection: trait inheritance & variation. Darwin’s theory for this was Pangenesis Father or geology – Charles Lyell Only 33% of Americans believe in evolution Meiosis results in 4 incomplete cells‚ with pairs from both mom and dad. RNA two types: messenger‚ transfer Mendals Laws – law of segregation‚ law of independent assortment Watson & Crick got nobel peace prize for discovering DNA Gene – section
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to attempt at least one question from each part. Part - A Cell Biology: Morphology. Chemical composition and functions of nucleus‚ nuclear inclusions and cytoplasmic organelles‚ protein synthesis and molecular genetics. mechanism of mitosis and meiosis. Part - B General Physiology: Respiration‚ respiratory mechanism‚ respiratory pigments‚ transport of oxygen and carbon dioxide‚ circulation : haemodynamics‚ control of cardiovascular system‚ nutrition: modes of nutrition‚ digestion and assimilation
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* plasmogamy: the union of the cytoplasm of the two gamete cells * karyogamy: the union of the nuclei * dikaryon (unfused) refers to the nuclei * fungus is all haploid‚ only diploid life cycle is the zygote. zygote undergoes meiosis to produce haploid spores for dispersal * molds: fungi in vegetative state (Deuteromycota/ fungi imperfecti * fungi are classified into 5 phyla * Chytridiomycota: spores with flagella * the rest named after the reproduction
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Truman College Department of Biology Biology 121 Fall ‘14 Francisco Diaz de Leon Assistant Professor Office 2633 Phone: 773.907.4394 Email: fdiaz-deleon@ccc.edu Office Hours: Tuesday and Thursday 8:30 to 11:00 AM; Monday and Wednesday 11 AM to 12 PM; or by appointment. NOTICE: The best way to communicate with me outside the classroom is via email. I do not check phone messages regularly. Course Description: Cellular and molecular biology of the cell. Introduction to biochemistry
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In the early 1950’s‚ when Alfred Hersey and Martha Chase were preforming experiments to determine which material in a cell was the hereditary material‚ the scientific community was much different that it currently is. To begin‚ female scientists were discriminated against heavily‚ especially if that woman was not a full-time researcher or also taught students (Gur-Arie). Unfortunately‚ this problem is still present today to a lesser degree. Also‚ scientists were often recruited to top research facilities
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