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Biology Study Guide “Biology is the natural science concerned with the study of life and living organisms, including their structure, function, growth, origin, evolution, distribution, and taxonomy.” Cut and discard this bottom portion.
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Scientific Process
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Science Equipment & Measurement
Electronic Balance Mass (g/kg) Dissection Equipment Gel Electrophoresis Microscope Lab Incubators Metric Ruler Micropippettors Petri Dishes Stereoscope Scientific Investigation & Reasoning Skills
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Endoplasmic Reticulum
Prokaryote vs. Eukaryote Cell Animal vs. Plant Cell Nucleus Cell Wall Plasma Membrane Endoplasmic Reticulum Ribosome Mitochondria Chloroplast Important Cell Parts Cellular Structure & Function Vacuole Golgi Apparatus Lysosome Cilia
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Cellular Transport Energy Conversions
Types of Solutions Reporting Cat 1: Cell Structure & Function
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Lytic/Lysogenic Cycle
Synthesis of New Molecules & Biomolecules Cellular Growth and Replication DNA Replication Mitosis Lytic/Lysogenic Cycle Meiosis Binary Fission
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Cell Differentiation & Specialization Cell Growth Gone Wrong:
DNA & RNA Structure Cell Growth Gone Wrong: Tumors Reporting Cat 1: Cell Structure & Function
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Carrying the Genetic Information
Sex Cells Chromosomes Genes DNA Protein Synthesis: Transcription and Translation The Purpose of the Process: This is the way that cells build more proteins
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Genotype = combination of alleles “AA” NonMendelian Genetics
A=Tall a=Short 25% A= Dominant (strong, visible) Gene a= Recessive (weak, hidden) Gene A or a = alleles Homozygous= same alleles= AA Heterozygous= different alleles= Aa Genotypes: AA, Aa, aa Phenotypes: 3 tall and 1 short Genetics Genotype = combination of alleles “AA” Phenotype = the way the genotype is physically expressed in an organism “Tall” AA=homozygous dominant traits Aa=heterozygous dominant traits aa=homozygous recessive traits Monohybrid Cross Dihybrid Cross NonMendelian Genetics Studying the Genome Mutations DNA Fingerprinting Genetic Engineering Chromosomal Analysis Reporting Category 2: Mechanisms of Genetics
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Differential Reproduction Natural Selection & Adaptation Over Time
Evidence of Common Ancestry Fossil Record Biogeography Homology Anatomical Molecular Developmental Investigating Natural Selection Trait Variation Differential Reproduction Heredity Trait Advantage Natural Selection & Adaptation Over Time
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Other Evolutionary Mechanisms
Genetic Drift- the effect of chance on heredity through a random event or situation. Gene Flow- the movement (migration) of genes from population to population Mutation- a mutation can change offspring for generations to come, by introducing something new. Recombination- this process can also change the evolutionary process. Reporting Cat 3: Biological Evolution & Classification
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Taxonomy & Biological Classification
Taxonomy is the science of identifying and arranging species into a classification. Carl Linnaeus gives us the system that we are familiar with today. Each part of the classification system is very important.
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Exploring the Classification System 6 Kingdoms of classification.
The 3 Domains and 6 Kingdoms of classification. Domain Bacteria – Eubacteria Domain Archaea – Archaebacteria Domain Eukarya – Protista, Fungi Animalia, Plantae Eubacteria- single celled organisms, cell wall made of peptidoglycan. Archaebacteria- single celled organisms, no peptidoglycan in cell wall, lipid membranes instead. Protista- can be unicellular or multicellular but they are eukaryotes. Fungi – unicellular or multicellular but they are eukaryotes. Animalia- multicellular, nucleus, no cell walls, heterotrophs Plantae –multicellular, nucleus, chloroplasts, autotrophs Reporting Cat 3: Biological Evolution & Classification
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Reactants & Products in Biological Processes
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Investigating Biological Systems
Enzymes play a key role in being catalyst in chemical reactions within the body: Increase rate of reaction Enzyme substrate-Product Enzyme regulation (H-L, L-H) Feedback mechanisms are a way of an organism trying to maintain homeostasis for example: Blood glucose production Body temperature Plant water and CO2 levels Reporting Cat 4: Biological Processes & Systems
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Body Systems & Their Functions
The human body is a very complicated system. It is made up of many systems working together. Each system has a job, and all of the systems together keep us alive. Below are the most important systems for you to know. Circulate blood throughout the body Circulatory System Supply blood with oxygen for the body. Respiratory System Organs that work together to help us reproduce Reproductive System Digestive System Removes excess material or waste Excretory System These systems help the body maintain “Homeostasis”
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Body Systems & Their Functions
Every system has a job and those jobs help keep your body balanced or in homeostasis. Feedback mechanisms are ways of keeping this important balance. When you sweat you cool down, when you eat you stop starvation, your body tells your brain, and it tells the body what to do. Endocrine System Secretes hormones into bloodstream to regulate the body. Nervous System Coordinates the actions of different parts of the body. Integumentary System This system protects the body from damage. It uses skin, hair, etc. Skeletal System Provides the body with form, shape and structure. Muscular System Provides the body with the ability to move. Systems working together to maintain “Homeostasis” Reporting Category 4: Biological Processes & Systems
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Ecosystems, Environmental Change, & The Roles of Organisms Within Them
Ecosystems have a very delicate balance. Often times factors beyond their control can offset the balance. Organisms then have to choices adjust over time or perish. Primary Succession – newly exposed rock, sand, or lava, no previous biotic community. New populations will move into this area, and those species will diversity over time as well. Secondary Succession – takes place where a previous community has been removed. New populations will also move into this area and those species will diversify over time. Environmental change will bring with it changes in the community that forms within it. Ecosystem
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Relationships Within an Ecosystem
Reporting Cat 5 – Interdependence Within Environmental Sys Predation – where a predator (an organism that is hunting) feeds on its prey (the organism that is attacked). Parasitism – non mutual relationship between organisms of different species where one organism, parasite, benefits at the expense of the other, the host Commensalism – relationship between two organisms where one organism benefits but the other is neutral (there is no harm or benefit) Predation – the way two organisms of different species biologically interact in a relationship in which each individual derives a fitness benefit (i.e., increased or improved reproductive output). Competition – These interactions cause competition among organisms and helps determine survival or extinction. Microorganisms – These organisms interact with others as well and cause diseases, aid organisms, and disrupt ecosystems as well over time.
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Interactions in the Ecosystem
Decomposer- bacteria that eats the remains Ex. = Fungus Consumer- animal that eats. Ex. = Frog Producer- plants that make food. Ex. = Grass Predator- animal that hunts Ex. = Lion Prey- animal that gets eaten. Ex = . Deer tertiary consumers secondary consumers primary consumers producers Omnivores- eat both plants and meat Carnivores- meat eaters Herbivores- plant eaters 3 types of consumers: Energy is transferred in a food pyramid from plants herbivores carnivores (carnivores) Hawks Frogs (carnivores) Grasshoppers (herbivores) Grass Interactions in the Ecosystem Organisms’ interactions dictate the flow of energy in an ecosystem.
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The Flow of Energy in an Ecosystem
Simple food chains are used to represent the way organisms interact with one another in an ecosystem, the type of ecosystem is important to the types of organisms that will be found with in. Food webs depict the way all of the organisms interact, and combine simple food chains into one model of interaction. Energy pyramids are a great model for illustrating trophic levels. The higher in the pyramid you go, the fewer organisms there are at the top. Coining the phrase, “Top of the food chain!” Biomass is the amount of living or organic matter present in an organism. Biomass pyramids show how much biomass is present in the organisms at each trophic level. Please remember that energy or matter is neither created nor destroyed. Reporting Cat 5 – Interdependence Within Environmental Sys
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The Importance of Cycles on Earth
Carbon Cycle: recycles O2 and CO2 on Earth for all organisms. Water Cycle: recycles water on Earth for all organisms. Nitrogen Cycle: recycles Nitrogen on Earth for all organisms.
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