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BIOLOGY Flashcards

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4917295302CellBasic unit of structure of living cells.0
4917295303Cell Theory~ All organisms are made up of cells, ~ Smallest organisational unit,1
4917295304BiogenisisCells derived from pre-existing cells.2
4917295305Plasma MembraneAlso known as the cell membrane. Separates the outside environment from inside of the cell as well as controlling what enters and exits the cell.3
4917295306CytoplasmMade up of the cytosol, and organelles (Eukaryotes.) While 80% is water, it also contains ions, salts and organic molecules.4
4917295307DNAHolds the hereditary information that's passed between generations.5
4917295308RibosomesThese organelles are responsible for the synthesis of proteins.6
4917295309Prokaryotes- Unicellular, - Lacks nucleus, - No membrane-bound organelles, - Found in extreme conditions, - single DNA chromosomes, (genosphore), - Genosphore found in nucleoid, - Cell wall (prevents damage and dehydration), - Flagella - enables free movement, - Pili - involved in transferring DNA,7
4917295310Eukaryotes- Membrane bound organelles, - Nucleus, - Specialised organelles, - 'Cell Compartmentalisation'8
4917295311Kingdom of Classification9
4917295312BacteriaSingle-celled organisms. Most numerous and oldest organism in the biosphere.10
4917295313ArchaeaExtremophiles. Organisms that live in extreme conditions, such as acidic, boiling or freezing conditions.11
4917295314LipidsFatty organic compounds, composed of carbon, hydrogen.12
4917295315Organelle MembranesAllows each organelle to have their own composition. Also helps control the movement within the cell.13
4917295316Rough Endoplasmic ReticulumProcesses and modifies proteins.14
4917295317Smooth Endoplasmic RetculumSynthesis lipids.15
4917295318LysosomeDigests cellular waste material and foreign matter.16
4917295319MitochondrionObtains energy from organic compounds and is the site of cell respiration.17
4917295320ChloroplastUses light energy, carbon dioxide and water to produce glucose. Also the site of photosynthesis.18
4917295321CentrioleInvolved in cell division and formation of cell structures.19
4917295322FlagellumMobility.20
4917295323VacuoleStores substances and helps plant cells with their structure.21
4917295324PlastidSynthesis' and storage's various organic molecules.22
4917295325Cell WallCell structure and protection.23
4917295326Animal Cell24
4917295327Plant Cell25
4917295328EnzymesProteins that act as biological catalysts. They only catalyse one type of reaction.26
4917295329Biological term for cell membranesemi / selectively / differentially permeable membrane27
4917295330Fluid Mosaic FluidThe structure of the cell membrane. Consisting of protein, lipids, phospholipid bilayer and more.28
4917295331PhospholipidsThe building block of Phospholipid Bilayer. Made up of a hydrophobic (doesn't like water) tail and hydrophilic (likes water) head.29
4917295332ProteinPermanent (Integral), temporary (peripheral) or spanning the phospholipid bilayer (transmembrane.)30
4917295333Carrier ProteinChange shape/form to allow certain shaped molecules through. Involved in Active Transport.31
4917295334Active Transport-Requires energy to move substances, -Can only occur through carrier proteins, -ATP is needed for this process, Carrier Protein changes shape to allow a substance to be pushed through.32
4917295335EndocytosisMaterials are taken into the cell by being pocketed by the cell membrane.33
4917295336ExocytosisVecsicle enclosing particles joins membrane to release enclosed material.34
4917295337Channel ProteinAllow specific proteins through.35
4917295338OsmosisDiffusion of water molecules. ~Net movement of water molecules from an area of high water concentration to an area of low concentration. ~Water molecules move from area of low solute concentration to area of high concentration. (SALT SUCKS)36
4917295339Facilitated DiffusionA process in which substances move through the plasma membrane down the concentration gradient with the aid of carrier (transport) proteins; does not require the use of energy.37
4917295340Simple DiffusionThe movement of particles from an area of high concentration to low until it is uniform throughout.38
4917295341Concentration effect on diffusionThe concentration becomes uniform quicker if the bigger the difference in concentration.39
4917295342Temperature effect on diffusionIncreasing the temperature increases the speed of the molecules movement.40
4917295343Particle size effect on diffusionThe smaller the particle, the quicker the rate of diffusion through the membrane.41
4917295344Surface Area to Volume RatioHaving a larger surface area to volume ratio means more efficiency at exporting and taking in substances. Having a smaller surface area to volume ratios, hence decreases the efficiency of exchange.42
4917295345Concentration GradientA difference in concentration of a solute between one region and another.43
4917295346SoluteA substance dissolved in a fluid.44
4917295347SolventA fluid in which a substance is dissolved.45
4917295348HypertonicA solution with a higher concentration of solute, low concentration of water.46
4917295349HypotonicA solution with a higher concentration of water, low concentration of solute.47
4917295350IsotonicSame concentration across the board.48
4917295351Crenated / PlasmolysedShriveled and shrunk from cell wall.49
4917295352Lysed / TurgidSwelled and burst, Pushing against cell wall.50
4917295353SymbiosisDifferent species living together in a close partnership. Each species is called a symbiont.51
4917295354ProducersOrganisms that produce their own food.52
4917295355DecomposersOrganisms that break down the dead remains of other organisms.53
4917295356DetrivitoreOrganism that obtains nutrients from decomposing material, non-living material, or animal waste.54
4917295357ScavengersFeed off of dead animals.55
4917295358HerbivoresOrganisms that feed on plant matter or other producers.56
4917295359CarnivoresOrganism that consumes other consumers- eats flesh.57
4917295360Trophic LevelDifferent feeding levels on a food chain / web.58
4917295361ConsumersAn organism that obtains energy and nutrients by feeding on other organisms or their remains.59
4917295362Keystone speciesA species that influences the survival of many other species in an ecosystem.60
4917295363Bio-mimicryBiomimicry involves mimicking or copying structures or systems found in nature to develop new materials or products.61
4917295364AutotrophAn autotroph is an organism that can obtain organic compounds by converting inorganic matter.62
4917295365HeterotrophA heterotroph obtains organic compounds from either a producer or other heterotrophs.63
4917295366Cellular RespirationA process that all cells do. It takes place in the mitochondria and creates energy that is stored in organic compounds.64
4917295367Cellular Respiration word formulaOxygen+Glucose->Carbon Dioxide+Water+Energy65
4917295368PhotosynthesisA process used by plants and other organisms to convert light energy into food. Takes place in the Chloroplast.66
4917295369Photosynthesis word formulaCarbon dioxide + water (with light) = Glucose and Oxygen67
4917295370Xylem VesslesElongated dead plant cells that create long tubes that the water is drawn up to reach the leaves and branches.68
4917295371Root Hair CellsCells in the roots of plants that have long extensions to increase surface area for the absorption of water and minerals.69
4917295372StomataA microscopic pore surrounded by guard cells in the epidermis of leaves and stems that allow gas exchange between the environment and the interior of the plant.70
4917295373Leaf Structure71
4917295374TranspirationPassive movement of water from roots to leaves- 99% of which is lost through stomata. 1% used for metabolic processes.72
4917295375SystemA group of organs that work together to perform a vital task.73
4917295376Human Digestive SystemMouth, oesophagus, stomach, small intestine, large intestine, + gall bladder and liver74
4917295377Function of Human Digestive SystemDigestion helps break down foods into waste and nutrients.75
4917295378Chemical DigestionEnzymes break down food into smaller molecules.76
4917295379Mechanical DigestionPhysical breakdown of large pieces of food into smaller pieces.77
4917295380EnzymesProteins that speed up chemical reactions in a cell.78
4917295381ProteasesEnzymes that breakdown protein, present in saliva and gastric secretions.79
4917295382AmylasesDigestive enzymes that converts the starch into maltose in our digestive system.80
4917295383Lipasesenzymes that break down lipids into soluble fatty acids.81
4917295384HomeostasisMaintaining a constant internal environment at optimum levels.82
4917295385Factors under Homeostatic control- Blood glucose, - Body Temp, - Oxygen & C02 Concentration, - pH of blood tissue and fluids,83
4917295386Negative FeedbackA corrective mechanism involving an action that directly opposes a variation from normal limits.84
4917295387StimulusChange in environment.85
4917295388ReceptorDetects and registers change in environment.86
4917295389Modulator / MediatorProcesses change and relays information.87
4917295390EffectorOrgan, Gland or Tissue tasked with the output or secretion to cause the 'effect'.88
4917295391ResponseOutcome of adjustments.89
4917295392InsulinA peptide hormone produced and secreted by the Beta cells of the pancreas. Insulin targets cells in the body, especially the liver and muscle, and allows them to take glucose out of the blood (thus lowering blood glucose levels).90
4917295393GlucagonA hormone secreted by the pancreatic alpha cells that increase blood glucose concentration.91
4917295394Endothermsanimals that maintain a constant body temperature and physiologically maintain it.92
4917295395Ectothermsanimals that cannot regulate body temperature physiologically and rely on the environment.93
4917295396Ways of increasing temp-increasing rate of cellular metabolism, -increasing rate of respiration, -behavioural, -shivering, -vasoconstriction, -piloerection,94
4917295397Ways of lowering temp-sweating, -vasodilation, -behavioural,95
4917295398OsmoregulationThe control of water balance in organisms living in hypertonic, hypotonic, or terrestrial environments.96
4917295399What happens when the blood water levels are too low?2. Hypothalamus detects it, 3. and processes change and initiates response, 4. Pituatry gland releases lots of ADH so high volume of water is absorbed by the kidney and small volumes of concentrated urine are passed to bladder and water is absorbed back into blood, 5. Water level returns to normal. Vice Versa.97
4917295400MutalismWhen both species benefit.98
4917295401CommunalismOne species benefits and the other is neither harmed or helped.99
4917295402ParasitismOne species benefits, the other is harmed.100
4917295403PredationConsumers that capture and eat other consumers, (Predator and Prey.)101
4917295404AmensalismOne species is killed or inhibited and the other is unaffected.102
4917295405Binomial Namenclaturetwo word naming system developed by linnaeus in which each species is assigned a two part scientific word called103
4917295406Genus nameCapitalized word, e.g 'Homo' sapiens104
4917295407Specific nameLower case word, e.g Homo 'sapiens'105
4917295408K.P.C.O.F.G.SKingdom, Phylum, Class, Order, Family, Genus, Species106

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