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Biology Flashcards

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8956113978DiffusionThe passive movement of particles from an area of high concentration to low concentration. This happens along a concentration gradient0
8956113979OsmosisA passive movement of water molecules through a semi permeable membrane. Water moves from an area of low solute concentration to high solute concentration1
8956113980Active TransportAn active movement where an input of energy is required. Particles move from low concentration to high concentration2
8956113981Facilitated DiffusionA passive movement of particles from high to low concentration through a protein channel in a cell.3
8956113982Isotonic SolutionThe same concentration of dissolved substances. Water in = water out.4
8956113983Hypertonic SolutionHigher concentration of solutes outside cell than inside5
8956113984PlasmolyseWhen a cell has shrunk6
8956113985Hypotonic SolutionA cell has more solute inside than outside.7
8956113986TurgidCell may explode under pressure due to a hypotonic solution.8
8956113987ExocytosisMovement out of a cell9
8956113988EndocytosisMovement into a cell10
8956113989LysosomeA vesicle that contains destructive/digestive chemicals11
8956113990PinocytosisA form of endocytosis where a cell engulfs liquid into the cell.12
8956113991PhagocytosisA form of endocytosis where a cell engulfs solids into a cell13
8956113992Scientific questionQuestions that can be answered by using experiments and factual reasoning.14
8956113993BiologyThe study of living organisms and how they function.15
8956113994Scientific MethodA method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.16
8956113995Hypothesis1st part of the scientific method17
8956113996experimental designExperimental design refers to how participants are allocated to the different conditions (or IV groups) in an experiment.18
8956113997variablefactors that are kept constant or unchanging.19
8956113998observationThe process of studying of something to gain information.20
8956113999inferenceA conclusion made up of facts and inferring knowledge.21
8956114000conclusionThe final ending or idea of a process22
8956114001predictionA statement about the hypothesis23
8956114002qualitative observationsdetailed examination with your senses only24
8956114003quantitative observationsmeasuring something with numbers25
8956114004homeostasisBalancing human or any living organisms26
8956114005metabolismThe chemical processes occurring within a living cell or organism that are necessary for the maintenance of life27
8956114006heredityThe genetic transmission of characteristics from parent to offspring.28
8956114007Golgi apparatuspackages proteins from the ER and materials and sends them to other parts of the cell29
8956114008Smooth ERnetwork or tubular membranes within the cytoplasm of the cell with a smooth surface; functions in a variety of different metabolic processes such as synthesis of lipids, oils, phospholipid and steroids; process drugs, alcohol, and store calcium ions30
8956114009Rough ERnetwork of tubular membanes within the cytoplasm of the cell with a rough surface (ribosomes are attached to it); helps the ribosomes make proteins, such as insulin31
8956114010Organellestiny structures within the cell that carry out specific functions32
8956114011plasma membraneforms a flexible boundary between the living cell and its surroundings; made if phospholipids33
8956114012nucleusoval-shaped organelle that contains DNA and controls much of the cell's activities by directing protein synthesis34
8956114013mitochondrioncarries out cellular respiration; rod-shaped organelle that makes energy for the cell to function with; converts the energy stored in food to energy the cell can use (ATP); "powerhouse" of cell35
8956114014nucleolusnuclear subdomain that assembles ribosomal subunits in eukaryotic cells; makes rRNA to form the subunits of ribosomes, which then exit to the cytoplasm36
8956114015chromatincomplex of DNA and proteins that form within the nucleus of eukaryotic cells; directs the cells' functions37
8956114016vacuolesac-like organelle that holds water, food and organisms; can also store waste products until removed38
8956114017chloroplastgreen structure that captures energy from sunlight and changes it to energy that cells can use in making food.39
8956114018prokaryoteplant, bacteria or archea cell40
8956114019eukaryoteanimal cell with nucleus41
8956114020plasmodesma42
8956114021ribosomessmall grain-shaped organelle that produces proteins43
8956114022cell membranethin, flexible barrier that surrounds the cell and controls what goes in and out; found in animal cells44
8956114023cytoplasmthe thick fluid region of a cell inside the membrane or next to the nucleus45
8956114024lysosomemembrane-enclosed sac of digestive enzymes; contains chemicals that break down bigger food particles so they can be used in the cell; also break down used cell parts. The cell's "recycling center".46
8956114025cell wallrigid layer surrounding the cells of plants47
8956114026multicellularmade of many cells48
8956114027unicellularsingle-celled organism49
8956114028centriolesmall set of microtubules arranged in a specific way50
8956114029phospholipid bilayerthin membrane of lipid molecules51
8956114030cytosolpart of cytoplasm not held by an organelle52
8956114031ciliathe appendages that propel certain cells53
8956114032cytoskeletonnetworks of protein fibers that extend through the cell54
8956114033cell theoryall living things are composed of cells and all cells come from other cells55
8956114034why are cells so small?smaller cells have more surface area across which to pass oxygen, nutrients and waste materials56
8956114035flagellaa projection from a prokaryotic cell that propels it through its liquid environment57
8956114036cellular metabolismchemical activities of cells58
8956114037nuclear envelopedouble membrane enclosing the nucleus; controls the flow of materials in and out of the nucleus59
8956114038where are ribosomes found?free-floating in the cytosol, or bound to the rough ER or the nuclear envelope60
8956114039endomembrane systemA system of membranes that are specific to a eukaryotic cell. Some are physically connected, while others link when vesicles transfer membrane segments between them.61
8956114040vesiclesacs made of membranes62
8956114041what makes up the endomembrane system?nuclear envelope, endoplasmic reticulum, golgi apparatus, lysosomes, vacuoles and the plasma membrane.63
8956114042What does the Golgi apparatus do?processes, warehouses and ships (outside and inside cell) ER products64
8956114043cristaefolds in the mitochondria that increase the surface area and therefore its ability to produce ATP65
8956114044ATPAdenine Triphosphate - main energy source for cellular work66
8956114045stroma67
8956114046thylakoids68
8956114047Plant CellWhat type of cell is this?69
8956114048Animal CellWhat type of cell is this?70
8956114049X) cell wallWhich of the following is NOT a structure found in human cells: W) mitochondrion X) cell wall Y) lysosome Z) peroxisome71
8956114050NucleusWhat organelle functions to isolate a human cell's chromosomes from the cytoplasm?72
8956114051CellWhat is the basic unit of life?73
8956114052ChloroplastIn what organelle of a plant cell does photosynthesis occur?74
8956114053PhotosynthesisIt is generally believed that most of the oxygen in the air on Earth today came from what general biological process:75
8956114054DNAWhat is the most common term for the biological polymer found in chromosomes that stores genetic information?76
8956114055OsmosisThe spontaneous movement of molecules through a semi-permeable membrane in order to create equilibrium.77
8956114056NucleusThese structures are located inside of a cell's...78
8956114057Body SystemsSets of organs in our bodies that do the work to keep us healthy and alive.79
8956114058cellsSmall part of all living things.80
8956114059OrgansMade of thousands of cells, connected by several body systems to do work to keep our bodies healthy & alive.81
8956114060photosynthesisConversion of light energy from the sun into chemical energy. products of photosynthesis are glucose and oxygen82
8956114061photosynthesis equation(very important)6CO2 + 6H2O --> light energy --> C6H12O6 + 6O283
8956114062chloroplastsA structure in the cells of plants and some other organisms that captures energy from sunlight and uses it to produce food. main function of chloroplasts is to produce food (glucose) Chloroplasts contain the pigment, chlorophyll. Chlorophyll absorbs most of the colors in the color spectrum, and reflects only green and yellow wavelengths of light. This is why we see leaves as green or yellow - because these colors are reflected into our eyes.84
8956114063glucoseanother name for sugar C6H12O6 three things used for making glucose are sunlight water and carbon dioxide used for energy and growth85
8956114064sunlightmain source of energy86
8956114065cellular respirationC6H1206->CO2 + H20+ ENERGY (released) goal is to create ATP occurs in all living things87
8956114066mitochondriaAn organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur.88
8956114067ATP(adenosine triphosphate) main energy source that cells use for most of their work the energy is stored in ATP until it is released by the reactions remove a phosphate from ATP a simple way of remembering it is just that it's just energy89
8956114068MetabolismThe sum total of all processes in an organism which convert energy and matter from outside sources and use that energy and matter to sustain the organism's life functions.90
8956114069AnabolismThe sum total of all processes in an organism which use energy and simple chemical building blocks to produce large chemicals and structures necessary for life.91
8956114070CatabolismThe sum total of all processes in an organism which break down chemicals to produce energy and simple chemical building blocks.92
8956114071PhotosynthesisThe process by which green plants and some other organisms use the energy of sunlight and simple chemicals to produce their own food.93
8956114072HerbivoresOrganisms that eat only plants.94
8956114073CarnivoresOrganisms that eat only organisms other than plants.95
8956114074OmnivoresOrganisms that eat both plants and other organisms.96
8956114075ProducersOrganisms that produce their own food.97
8956114076ConsumersOrganisms that eat living producers and/or other consumers for food.98
8956114077DecomposersOrganisms that break down the dead remains of other organisms.99
8956114078AutotrophsOrganisms that are able to make their own food.100
8956114079HeterotrophsOrganisms that depend on other organisms for their food.101
8956114080Asexual reproductionReproduction accomplished by a single organism.102
8956114081Sexual reproductionReproduction that requires two organisms103
8956114082InheritanceThe process by which physical and biological characteristics are transmitted from the parent (or parents) to the offspring.104
8956114083MutationAn abrupt and marked change in the DNA of an organism compared to that of its parents105
8956114084HypothesisAn educated guess that attempts to explain an observation or answer a question.106
8956114085TheoryA hypothesis that has been tested with a significant amount of data.107
8956114086Scientific lawA theory that has been tested by and is consistent with generations of data.108
8956114087MicroorganismsLiving creatures that are too small to see with the naked eye.109
8956114088AbiogenesisThe idea that long ago, very simple life forms spontaneously appeared through chemical reactions.110
8956114089Prokaryotic cellA cell that has no distinct, membrane-bounded organelles.111
8956114090Eukaryotic cellA cell with distinct, membrane-bounded organelles.112
8956114091SpeciesA unit of one or more populations of individuals that can reproduce under normal conditions, produce fertile offspring, and are reproductively isolated from other such units.113
8956114092ParasiteAn organism that feeds on a living host.114
8956114093Aerobic organismAn organism that requires oxygen.115
8956114094Anaerobic organismAn organism that does not require oxygen.116
8956114095Exponential growthPopulation growth that is unhindered because of the abundance of resources for an ever-increasing population.117
8956114096Logistic growthPopulation growth that is controlled by limited resources.118
8956114097NucleusThe region of a eukaryotic cell that contains the cell's main DNA.119
8956114098VacuoleA membrane-bounded "sac" within a cell.120
8956114099ChloroplastAn organelle containing chlorophyll for photosynthesis.121
8956114100ChlorophyllA pigment necessary for photosynthesis.122
8956114101SymbiosisA close relationship between two or more species where at least one benefits.123
8956114102MutualismA relationship between two or more organisms of different species where all benefit from the association.124
8956114103CommonesalismA relationship between two organisms of different species where one benefits and the other is neither harmed nor benefited.125
8956114104ParasitismA relationship between two organisms of different species where one benefits and the other is harmed.126
8956114105CiliaHairlike projections that extend from the plasma membrane and are used for locomotion.127
8956114106CelluloseA substance (made of sugars) that is common in the cell walls of many organisms.128
8956114107ChitinA chemical that provides both toughness and flexibility.129
8956114108MembraneA thin covering of tissue.130
8956114109FermentationThe anaerobic breakdown of sugars into smaller molecules.131
8956114110AtomsThe basic building blocks of matter.132
8956114111MatterAnything that has mass and takes up space.133
8956114112ModelAn explanation or representation of something that cannot be seen.134
8956114113ElementA collection of atoms that all have the same number of protons.135
8956114114MoleculesChemicals that result from atoms linking together.136
8956114115Physical changeA change that affects the appearance but not the chemical makeup of a substance.137
8956114116Chemical changeA change that alters the makeup of the elements or molecules of a substance.138
8956114117PhaseOne of the three forms--solid, liquid, or gas--which every substance is capable of attaining.139
8956114118DiffusionThe random motion of molecules from an area of high concentration to an area of low concentration.140
8956114119ConcentrationA measurement of how much solute exists within a certain volume of solvent.141
8956114120Semipermeable membraneA membrane that allows some molecules to pass through but does not allow other molecules to pass through.142
8956114121OsmosisThe tendency of a solvent to travel across a semipermeable membrane into areas of higher solute concentration.143
8956114122Organic MoleculeA molecule that contains only carbon and any of the following: hydrogen, oxygen, nitrogen, sulfur, and/or phosphorous.144
8956114123HydrophobicLacking any affinity to water.145
8956114124HomeostasisMaintaining the status quo.146
8956114125ReproductionProducing more cells.147
8956114126CytologyThe study of cells.148
8956114127Cell WallA rigid structure on the outside of certain cells, usually plant and bacteria cells.149
8956114128Plasma membraneThe semipermeable membrane between the contents and either the cell wall or the cell's surroundings.150
8956114129CytoplasmA jellylike fluid inside the cell in which the organelles are suspended.151
8956114130Cytoplasmic streamingThe motion of cytoplasm in a cell that results in a coordinated movement of the cell's contents.152
8956114131MitochondriaThe organelles in which nutrients are converted to energy.153
8956114132LysosomeThe organelle in animal cells responsible for hydrolysis reactions that break down proteins, polysaccharides, disaccharides, and some lipids.154
8956114133RibosomesNon-membrane-bounded organelles responsible fore protein synthesis.155
8956114134Endoplasmic reticulumAn organelle composed of an extensive network of folded membranes that performs several tasks within a cell.156
8956114135Rough ERER that is dotted with ribosomes.157
8956114136Smooth ERER that has no ribosomes.158
8956114137Central vacuoleA large vacuole that rests at the center of most plant cells and is filled with a solution that contains a high concentration of solutes.159
8956114138PhagocytosisThe process by which a cell engulfs foreign substances or other cells.160
8956114139Pinocytic vesicleVesicle formed at the plasma membrane to allow the absorption of large molecules.161
8956114140Golgi bodiesThe organelles where proteins and lipids are stored and then modified to suit the needs of the cell.162
8956114141MicrotubulesSpiral strands of protein molecules that form a tubelike structure.163
8956114142Nuclear membraneA highly-porous membrane that separates the nucleus from the cytoplasm.164
8956114143ChromatinClusters of DNA, RNA, and proteins in the nucleus of a cell.165
8956114144CytoskeletonA network of fibers that holds the cell together, helps the cell to keep its shape, and aids in movement.166
8956114145MicrofilamentsFine, threadlike proteins found in a cell's cytoskeleton.167
8956114146Intermediate filamentsThreadlike proteins in the cell's cytoskeleton that are roughly twice as thick as microfilaments.168
8956114147PhospholipidA lipid in which one of the fatty acid molecules has been replaced by a molecule that contains a phosphate group.169
8956114148Passive transportMovement of molecules through the plasma membrane according to the dictates of osmosis or diffusion.170
8956114149Active transportMovement of molecules through the plasma membrane (typically opposite the dictates of osmosis or diffusion) aided by a process that requires energy.171
8956114150Isotonic solutionA solution in which the concentration of solutes is essentially equal to that of the cell which resides in a solution.172
8956114151Hypertonic solutionA solution in which the concentration of solutes is greater than that of the cell that resides in the solution.173
8956114152PlasmolysisCollapse of a walled cell's cytoplasm due to a lack of water.174
8956114153Hypotonic solutionA solution in which the concentration of solutes is less than that of the cell that resides in the solution.175
8956114154DNADeoxyriboneucleic acid found mainly in the nucleus176
8956114155sexual reproduction2 parents male and female177
8956114156asexual reproduction1 parent178
8956114157Chromosomesmade up of DNA and proteins179
8956114158homeostasisstate reaches when each part of the body functions in equilibrium with other parts.180
8956114159nitrogenous baseis a carbon ring structure that contains one or more atoms of nitrogen. In DNA, Adenine, Thymine, Cytosine, Guanine.181
8956114160metabolismall chemical processes that synthesize or break down materials within an organism.182
8956114161plasmaLiquid portion of blood183
8956114162DEPENDENT VARIABLEWHAT YOU MEASURE- ON Y AXIS184
8956114163INDEPENDENT VARIABLEWHAT YOU CHOOSE VALUES FOR- ON Y AXIS185
8956114164CONTROL VARIABLEVARIABLES THAT REMAIN CONSTANT OR UNCHANGED186
8956114165developmentthe change in shape or organisms over time. Ex. a child's ________ is very fast.187
8956114166ecologythe branch of biology that studies the interactions of organisms with one another and with nonliving parts of their environment188
8956114167genesections of chromosomes made of DNA that code for traits. The basic unit of heredity.189
8956114168genomethe complete genetic material contained in an individual.190
8956114169hereditythe passing of traits from parent to offspring. Ex. scientists know that _____ can increase chances for certain diseases.191
8956114170interdependenceorganisms in a biological community live and interact with other organisms.192
8956114171mutationa change in the DNA of a gene.193
8956114172natural selectionprocess in which organisms with favorable genes are more likely to survive to reproduce. Ex. the idea of ____ ______ was first presented by Charles Darwin.194
8956114173organismany living thing; something that meets all criteria of life. Ex. so far, we have not found proof of any living ________ on another planet.195
8956114174pHa relative measure of the hydrogen ion concentration within a solution; Latin for "probably hydrogens".196
8956114175differentiationprocess by which cells become specialized for specific functions.197
8956114176ingestiontaking in food from the environment.198
8956114177regulationprocess by which organisms maintain homeostasis, a stable internal environment.199
8956114178reproductionprocess by which organisms produce new organisms of their own kind200
8956114179equilibriumthe state of both sides are balanced201
8956114180evolutionthe process of change that has transformed life on Earth202
8956114181theorya system of ideas that explains many related observations and is supported by a large body of evidence acquired through scientific investigation203

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