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AP Biology Unit 2 Flashcards

Includes Unit 2 information, along with Unit 1 info.

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15597939918active transportEnergy-requiring process that moves material across a cell membrane against a concentration difference0
15597939919BacillusRod shaped bacteria1
15597939920carrier proteinsa protein that transports substances across a cell membrane2
15597939921cell recognition proteinsGlycoproteins in the plasma membrane that identify self and help the body defend itself against pathogens.3
15597939922cell wallA rigid layer of nonliving material that surrounds the cells of plants and some other organisms.4
15597939923channel proteinsprovide corridors that allow a specific molecule or ion to cross the membrane5
15597939924CholesterolA lipid that forms an essential component of animal cell membranes and acts as a precursor molecule for the synthesis of other biologically important steroids. Stiffens cell membrane.6
15597939925concentration gradientA difference in the concentration of a substance across a distance.7
15597939926DiffusionMovement of molecules from an area of higher concentration to an area of lower concentration.8
15597939927Endocytosisprocess by which a cell takes material into the cell by infolding of the cell membrane9
15597939928Exocytosisa process by which the contents of a cell vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane.10
15597939929facilitated transporta process by which material moves down a concentration gradient (from high to low concentration) using integral membrane proteins11
15597939930fluid mosaic modelmodel that describes the arrangement and movement of the molecules that make up a cell membrane12
15597939931gap junctionsPoints that provide cytoplasmic channels from one cell to another with special membrane proteins. Also called communicating junctions.13
15597939932GlycoproteinsMembrane carbohydrates that are covalently bonded to proteins. Antibodies.14
15597939933hypertonic solutionA solution in which the concentration of solutes is greater than that of the cell that resides in the solution15
15597939934isotonic solutionA solution in which the concentration of solutes is essentially equal to that of the cell which resides in the solution16
15597939935OsmosisDiffusion of water through a selectively permeable membrane17
15597939936osmotic pressurepressure that must be applied to prevent osmotic movement across a selectively permeable membrane18
15597939937Phagocytosisprocess in which extensions of cytoplasm surround and engulf large particles and take them into the cell19
15597939938PinocytosisA type of endocytosis in which the cell ingests extracellular fluid and its dissolved solutes.20
15597939939PlasmolysisThis happens when a cell shrinks inside its cell wall while the cell wall remains intact.21
15597939940receptor proteinsProteins that transmit information in and out of cells. They allow communication between cells.22
15597939941selectively permeablea property of cell membranes that allows some substances to pass through, while others cannot23
15597939942sodium-potassium pumpA transport protein in the plasma membrane of animal cells that actively transports sodium out of the cell and potassium into the cell.24
15597939943SoluteA substance that is dissolved in a solution.25
15597939944SolutionA mixture that forms when one substance dissolves another.26
15597939945SolventA liquid substance capable of dissolving other substances27
15597939946turgor pressurethe pressure that is exerted on the inside of cell walls and that is caused by the movement of water into the cell28
15597939947hypotonic environmentThe contractile vacuole of a paramecium should be active when the paramecium is in29
15597953971Characteristics of lifemovement, responsiveness, growth, reproduction, respiration, circulation of energy30
15597953972Organization of lifesubatomic particles, atoms, molecules, organelles, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere31
15597953973emergent propertiesNew properties that arise with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases.32
15597953974Classes of TaxonomyDomain, Kingdom, Phylum, Class, Order, Family, Genus, Species33
155979539753 domainsBacteria, Archaea, Eukarya34
15597953976How are species named?binomial nomenclature35
15597954037Genus Species36
15597953977cladogram/phylogenetic treea branching tree depicting evolutionary relationships among organisms37
15597953978independent variableThe experimental factor that is manipulated; the variable whose effect is being studied.38
15597953979dependent variableThe outcome factor; the variable that may change in response to manipulations of the independent variable.39
15597953980How to avoid confirmation biasEncourage and carefully consider critical views on the working hypothesis. Ensure that all stakeholders examine the primary data. Do not rely on analysis and summary from a single individual. Design experiments to actually test the hypothesis.40
15597953981How is inductive reasoning part of the scientific method?Scientists use it to form hypotheses and theories.41
15597953982How is deductive reasoning part of the scientific method?Deductive reasoning allows them to apply the theories to specific situations.42
15597953983Occam's RazorSimpler explanations are more likely to be true than complex ones.43
15597953984anecdotal evidencePersonal stories about specific incidents and experiences.44
15597953985Steps of the Scientific MethodAsk a Question45
15597954038Do Background Research46
15597954039Construct a Hypothesis47
15597954040Test Your Hypothesis by Doing an Experiment48
15597954041Analyze Your Data and Draw a Conclusion49
15597954042Communicate Your Results50
15597953986scientific theorya well-tested explanation for a set of observations or experimental results51
15597953987scientific lawA statement that describes what scientists expect to happen every time under a particular set of conditions. Inductive Reasoning.52
15597953988Science "prove" badTheory's can be disproved53
15597953989Limitations of ScienceRestricted to those things that can be logically tested and falsified.54
15597954043More than one hypothesis can predict the same outcome of a test.55
15597954044Results can be interpreted in different ways, leading to different conclusions.56
15597954045Hypotheses constantly being reevaluated and modified as more results and information are gained.57
15597953990What subjects are outside the realm of science?Religion58
15597954046Aesthetics59
15597953991Falsifiabilitya feature of a scientific theory, in which it is possible to collect data that will prove the theory wrong60
15597953992natural causalitythe scientific principle that natural events occur as a result of preceding natural causes61
15597953993atomic massThe average mass of all the isotopes of an element62
15597953994atomic numberthe number of protons in the nucleus of an atom63
15597953995isotopeAtoms of the same element that have different numbers of neutrons64
15597953996Properties of CarbonCarbon has 4 valence electrons = 4 bonds65
15597954047Can form long chains66
15597954048Makes organic compounds when bonded with hydrogen67
15597953997covalent bondA chemical bond that involves sharing a pair of electrons between atoms in a molecule68
15597953998ionic bondA chemical bond resulting from the attraction between oppositely charged ions.69
15597953999Properties of watercohesion, adhesion, excellent solvent, solid is less dense than liquid, specific heat70
15597954049high polarity->hydrogen bonding-> cohesiveness-> adhesiveness ->high specific heat->high latent heat and High heat of vaporization71
15597954000heat capacitythe number of heat units needed to raise the temperature of a body by one degree.72
15597954001VaporizationThe change of state from a liquid to a gas73
15597954002SolventIn a solution, the substance in which the solute dissolves.74
15597954003CohesionAttraction between molecules of the same substance75
15597954004Adhesianattraction between molecules of different substances76
15597954005surface tensionthe uneven forces acting on the particles on the surface of a liquid77
15597954050the force that acts on the surface of a liquid and that tends to minimize the area of the surface78
15597954006DensityMass per unit volume79
15597954051the degree of compactness of a substance.80
15597954007carbon atomscan form single, double & triple bonds;these organic compounds can have different shapes/patterns81
15597954008carbon chainscarbon easily bonds with carbon.82
15597954009functional groupsA specific configuration of atoms commonly attached to the carbon skeletons of organic molecules and involved in chemical reactions.83
15597954052the components of organic molecules that are most commonly involved in chemical reactions84
15597954010isomerCompounds with the same formula but different structures.85
15597954011dehydration synthesisA chemical reaction in which two molecules covalently bond to each other with the removal of a water molecule.86
15597954012hydrolysisA chemical process that splits a molecule by adding water.87
15597954013HydrophobicHaving an aversion to water; tending to coalesce and form droplets in water.88
15597954014HydrophilicAttracted to water89
15597954015Carbohydrate monomermonosaccharide90
15597954016Lipid monomerglycerol and fatty acids91
15597954017Protein monomeramino acids92
15597954018nucleic acid monomernucleotide93
15597954019Carbohydratesthe starches and sugars present in foods94
15597954020Carbohydrate functionimmediate energy source95
15597954021Lipid functionlong term energy storage96
15597954022protein functionsstructural support, storage, transport, cellular communications, movement, and defense against foreign substances97
15597954023nucleic acid function+locationLocated in the nucleus of cells, contains genetic information which describes the order of amino acids when making proteins.98
15597954024induced fit modelChange in the shape of an enzyme's active site that enhances the fit between the active site and its substrate(s)99
15597954025substratereactant of an enzyme-catalyzed reaction100
15597954026active sitea region on an enzyme that binds to the substrate during a reaction.101
15597954027enzyme temperature and pHenzymes need the right temperature and pH to function. if the temperature is too high, or the pH is too acidic or alkaline, the enzyme will denature102
15597954028synthesis reactiona reaction in which two or more substances combine to form a new compound103
15597954029Degradation reactionthe substrate is broken down to the products104
15597954030Enzymatic SpeedThe rate of a reaction is the amount of product produced per unit time.105
15597954031competitive inhibitionsubstance that resembles the normal substrate competes with the substrate for the active site106
15597954032noncompetitive inhibitioninhibitor binds elsewhere on the enzyme; alters active site so that the substrate cannot bind107
15597954033Enzyme reaction rates are affected by1. Shape- "Lock and Key Model" if it is the wrong shape it will not work.108
155979540532. Temperature- each enzyme works best at a specific temperature109
155979540543. pH-- each enzyme works best at a specific pH110
15597954034enzyme catalysis rateTested by measuring the amount of substrate left, or product contained.111
15597954035CatalaseAn enzyme produced in all cells to decompose hydrogen peroxide, a by-product of cell respiration112
15598072127Cell MembraneRegulates exchange, creates a barrier, communication & Identification113
15598079632water potentialThe physical property predicting the direction in which water will flow, governed by solute concentration and applied pressure.114
15598083073PhospholipidsA molecule that is a constituent of the inner bilayer of biological membranes, having a polar, hydrophilic head and a nonpolar, hydrophobic tail.115
15598088776Glycolipidssignal molecules116
15598100121Transpirationthe process by which water evaporates from a plant's leaves117
15598113883Phospholipid Membranehas charged molecules, and water may cross.118
15598137679passive transportRequires NO energy, Movement of molecules from high to low concentration, Moves with the concentration gradient119
15598141680facilitated diffusionMovement of specific molecules across cell membranes through protein channels using passive transport.120
15598147771cellular respirationA lot of metabolic reactions net gain of 36 ATP The three stages are Glycolysis > Krebs cycle > ETC121
15598156199enzymatic proteinscarry out metabolic reactions directly122
15598316702GlycolysisThe first stage of cellular respiration, splits glucose, and has a net gain of 2 ATP.123
15598415241Krebs Cycle (Citric Acid Cycle)The Krebs Cycle, also known as the citric acid cycle, takes place in the matrix of the mitochondria. In the Krebs Cycle, each of the two acetyl coenzyme A molecules enter the cycle and combine with oxaloacetate to form citric acid, which then loses two carbons as carbon dioxide. The cycle is now ready to begin again with the second Acetyl CoA. For each Acetyl CoA, the Krebs Cycle produces 1 ATP, 3 NADH, and 1 FADH2. Requires Oxygen, without oxygen fermentation happens in the cytoplasm, which is much less effective.124
15598482014ETCelectron transport chain 32-24 ATP per glucose, and 6 water formed.125
15598487697sodium-potassium pumpA special transport protein in the plasma membrane of animal cells that transports sodium out of the cell and potassium into the cell against their concentration gradients. Three sodium removed, and two potassium added.126
15605239401contractile vacuoleThe cell structure that collects extra water from the cytoplasm and then expels it from the cell, it is found in freshwater microorganisms.127

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