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Biology

Mendelian Genetics

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Gregor Mendel Studied traits that occur in distinct forms. Developed true-breeding varieties When bred amongst themselves these plants produced offspring identical to the parent for that trait. Used mathematical analysis in his studies. Definitions Gametes: reproductive cells produced by sexually reproducing organisms. Two types: male gametes = sperm In plants: contained in pollen Female gametes = eggs In plants: contained in ovules which mature to seeds when fertilized Ovules contained in carpels Fertilization Fertilization: fusion of egg and sperm Self-fertilized: fusion of sperm and egg from same plant Cross fertilized: fusion of egg and sperm from two different plants Produced hybrids F1: first generation F2: second generation Mendel?s Model

Chapter 16 Molecular Basis of Inheritance

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Chapter 16 The Molecular Basis of Inheritance Sugar?phosphate backbone 5? end Nitrogenous bases Thymine (T) Adenine (A) Cytosine (C) DNA nucleotide Phosphate 3? end Guanine (G) Sugar (deoxyribose) LE 16-8 Adenine (A) Thymine (T) Guanine (G) Cytosine (C) Sugar Sugar Sugar Sugar 5? end 3? end 5? end 3? end Space-filling model Partial chemical structure Hydrogen bond Key features of DNA structure 0.34 nm 3.4 nm 1 nm Structure of DNA The parent molecule has two complementary strands of DNA. Each base is paired by hydrogen bonding with its specific partner, A with T and G with C. The first step in replication is separation of the two DNA strands. The parent molecule has two complementary

Fungus Lecture

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Lecture 5 ? Kingdom of Fungi HW 1. Explain what a pseudohypha is. -A chain of yeast formed when buds remain attached in a row. 2. Explain what a ?dimorphic fungus? is. -It can take either form (yeast or hyphae), depending upon growth conditions, such as changing temperature. 3. What are mycoses? Fungal infections in the way the agent enters the body and the degree of tissue involvement. 4. What are the three most common sexual spores? -Zygospores, ascospores, and basidiospores 5. Give six types of asexual mold spores. -Arthrospore; Chlamydospore, Blastospore, phialospore, micro/macroconidium; porospores 6. What are zygospores?

Chapter 1 Introduction to Biology Lecture

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Introduction: Exploring Life Chapter 1 Definition of Biology The study of life Characteristics of Living Organisms Living organisms are organized. Atom: the smallest unit of matter that still retains the properties of an element Molecule: two or more chemically bound elements Characteristics of Living Organisms Living organisms are organized Cell: the basic living unit of structure and function Eukaryotic cell Possesses a membrane-bound nucleus and membrane-bound organelles Ex. protists, fungi, plants, and animals Prokaryotic cell Does not possess a membrane-bound nucleus or membrane-bound organelles Ex. bacteria Characteristics of Living Organisms Living organisms are organized Tissue: a collection of like cells

Info about the great bio discoverers

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Griffith Reported his experiment in 1928, which demonstrates that bacteria change their form and function, called bacterial transformation Experiment showed that a strain implicated in lobar pneumonia could transform into other strains, which he attributed to some transforming factor that would eventually be identified as DNA

list of Ap Psych terms

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AP Psychology: Mid-Term Exam Study Guide Key Terms Ch 1 Psychology Scientific Method Theory Hypothesis Structuralism Functionalist Theory Psychodynamic theories Behaviorism Gestalt psychology Humanistic psychology Cognitive psychology Evolutionary psychology Positive psychology Gender Gender stereotypes Gender roles Feminist theory Sexual orientation Race Ethnicity Culture Empirical evidence Naturalistic observation Observer bias Case study Survey research Correlational research Experimental method Participants Independent variable Dependent variable Experimental Group Control Group Experimenter bias Sample Random Sample Representative sample Ch 2 Psychobiology Neuroscience Neurons Dendrites

The Emergence of Early Human Communities and the People of the Earth (Timeline)

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The Emergence of Early Human Communities and the People of the Earth (ca. 5 million B.C.E. - 10,000 B.C.E.) BIG BANG SOLAR SYSTEM AND EARTH LIKELY APPEARANCE OF FIRST HUMAN- LIKE SPECIES ARDIPITECUS RAMIDUS, "ARDI," EARLIEST KNOWN BIPEDAL HOMINIDS AUSTRALOPITHECUS AFARENSIS, "LUCY" HOMO HABILIS, THE "TOOLMAKER," AND BEGINNING OF THE ICE AGES HOMO ERECTUS AND MIGRATION OUT OF AFRICA HOMO SAPIENS AND LANGUAGE HOMO SAPIENS SAPIENS OR MODERN HUMANS HOMO SPAIENS SAPIENS REMAINS FOUND OVER LARGE AREAS 14 billion years ago 5-6 billion B.C.E. 6 million B.C.E. 4.4 million B.C.E. 3.9 million B.C.E. 2.5 million B.C.E. 1.8 million B.C.E. 400,000 B.C.E. 135,000 B.C.E. 100,000 B.C.E.

Part 2 Biology Revision Notes for AQA GCSE A/A*

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B3.3 Keeping internal conditions constant 3.1 Controlling internal condition Keeping the conditions in the in the body within a narrow range is called homeostasis. Temperature, blood glucose, water and ion content and levels of waste products must all be controlled Waste products that have to be removed include; CO2 (produced by respiration) removed by the lungs urea (produced in the liver when amino acids are broken down) removed by the kidneys and temporarily stored in the bladder Water and ions enter the body when we eat and drink. If the water or ion content in the body is wrong, too much water may move into or out of the cells. This could damage or destroy the cells 3.2 The human kidney

B3 Triple Science GCSE

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Biology B3 B3.1 Exchange of materials 1.1 Osmosis Osmosis is the net movement of water particles from an area of high water concentration to an area of low water concentration across a partially permeable membrane (e.g. a cell membrane) It?s random and re quires no energy 1.2 Active transport Cells may need to absorb substances which are in short supply, i.e. against the concentration gradient. To do this they use active transport to absorb substances across partially permeable membranes Active transport requires the use of energy released in respiration Cells are able to absorb ions from dilute solutions. For example, root cells absorb mineral ions from the dilute solutions in the soil by active transport Glucose can be reabsorbed in the kidney tubules by active transport

bio

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Edexcel Specification Merchant Taylors? School BiologyBiologyBiologyBiology AAAA----LevelLevelLevelLevel A2 Core Practical A2 Core Practical A2 Core Practical A2 Core Practical WorkbookWorkbookWorkbookWorkbook 2 | P a g e 3 | P a g e 5.11 How to study the ecology of an area (see coursework) 5.17 How temperature affects the development of organisms 6.6 Polymerase Chain Reaction (PCR) 6.7 Electrophoresis 6.18 Which antibiotic is the most effective? 7.6 Investigating the rate of respiration 7.14 Spirometer and exercise 8.15 Habituation to a stimulus

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