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Biology semester 2-FINAL Flashcards

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68772505Genetic Engineeringthe technology of preparing recombinant DNA in vitro by cutting up DNA molecules and splicing together fragments from more than one organism0
68772506Bacterial Transformationability of bacteria to alter their genetic makeup by uptaking foreign DNA from another bacterial cell and incorporating it into their own1
68772507Restriction Enzymeenzyme that cuts DNA at a specific sequence of nucleotides2
68772508Recombinant DNAgenetically engineered DNA made by recombining fragments of DNA from different organisms3
68772509Transgenic organismorganisms that contain functional recombinant DNA from a different organism4
68772510Plasmida small cellular inclusion consisting of a ring of DNA that is not in a chromosome but is capable of autonomous replication5
68772511Meiosis(genetics) cell division that produces reproductive cells in sexually reproducing organisms6
68772512Mitosiscell division in which the nucleus divides into nuclei containing the same number of chromosomes7
68772513Photosynthesisprocess by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches8
68772514Cell Respirationthe process in cells in which oxygen is used to release stored energy by breaking down sugar molecules9
68772515Framshiftpoint, insertion or deletion of one or two base pairs10
68772516Mutagenphysical or chemical agent that causes mutations11
68772517Natural Selectiona natural process resulting in the evolution of organisms best adapted to the environment12
68772518Adaptationsthe behaviors and physical characteristics that allow organisms to live successfully in their environments13
68772519Phylogenetic Treesa branching diagram that represents a hypothesis about the evolutionary history of a group of organisms14
68772520Taxonomypractice of classifying plants and animals according to their presumed natural relationships (classifications of animals, know all 7 types)15
70311616biologythe study of life16
70311617Organic MoleculeA molecule that contains only carbon and any of the following: hydrogen, oxygen, nitrogen, sulfur, and/or phosphorous17
70311618AciditypH values below 718
70311619pH(chemistry) p(otential of) H(ydrogen). measures the acidity of substances19
70311620populationthe act of populating (causing to live in a place)20
70311621catalyzechange by catalysis or cause to catalyze21
70311622enzymesproteins that act as biological catalysts22
70311623fatty acidssimple forms of fat that supply energy fuel for most of the body's cells23
70311624hormoneschemical "messengers" of the endocrine system that are released into the blood24
70311625monosaccharidessingle sugar molecules25
70311626reactantsthe elements or compounds that enter into a chemical reaction26
70311627productsthe elements or compounds produced by a chemical reaction27
70311628biochemical pathwaya series of chemical reactions in which the product of one reaction is consumed in the next reaction28
70311629lysosomesAn organelle containing digestive enzymes29
70311630bonda connection that fastens things together30
70311631distilled waterwater that has been purified by distillation31
70311632active transporttransport of a substance (as a protein or drug) across a cell membrane against the concentration gradient32
70311633osmosisdiffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal33
70311634cell membranea thin membrane around the cytoplasm of a cell34
70311635metabolismthe organic processes (in a cell or organism) that are necessary for life35
70311636nutritiona source of materials to nourish the body36
70311637synthesisthe process of producing a chemical compound (usually by the union of simpler chemical compounds)37
70311638ATPa nucleotide derived from adenosine that occurs in muscle tissue38
70311639DNAdeoxyribonucleic acid, the material that contains the information that determines inherited characteristics39
70311640ribosomesthe organelle that make proteins in cells40
70311641combustiona process in which a substance reacts with oxygen to give heat and light41
70311642Aerobic respirationcellular respiration that uses oxygen, sequentially releasing energy and storing it in ATP42
70311643Fermentationa process in which an agent causes an organic substance to break down into simpler substances43
70311644pyruvateThree-carbon compound that forms as an end product of glycolysis.44
70311645oxidative respirationseries of chemical reactions that occur in mitochondria, and the process by which cells get most of their energy45
70311646glycolysisa metabolic process that breaks down carbohydrates and sugars through a series of reactions to either pyruvic acid or lactic acid and release energy for the body in the form of ATP46
70311647glucosea monosaccharide sugar that has several forms47
70311648chloroplastorganelle found in cells of plants and some other organisms that captures the energy from sunlight and converts it into chemical energy48
70311649chlorophyllgreen pigment in plants that absorbs light energy used to carry out photosynthesis49
70311650lactic acidwaste product produced by Fermentation; causes muscles to be sore50
70311651anaerobic respirationRespiration in the absence of oxygen. This produces lactic acid.51
70311652Eukaryotescells that contain nuclei52
70311653Krebs cyclesecond stage of cellular respiration, in which pyruvic acid is broken down into carbon dioxide in a series of energy-extracting reactions53
70311654Prokaryotescells that do not contain nuclei54
70311655Sensory neurona neuron conducting impulses inwards to the brain or spinal cord55
70311656motor neurona neuron conducting impulses outwards from the brain or spinal cord56
70311657stimuliinformation in the environment that activates the nerves in a sense organ57
70311658Central Nervous Systemthe portion of the vertebrate nervous system consisting of the brain and spinal cord58
70311659Digestionthe organic process by which food is converted into substances that can be absorbed into the body59
70311660Prophasethe first stage of mitosis or meiosis in eukaryotic cell division, during which the nuclear envelope breaks down and strands of chromatin form into chromosomes60
70311661Metaphasesecond phase of mitosis, during which the chromosomes line up across the center of the cell61
70311662Telophasethe final stage of meiosis when the chromosomes move toward opposite ends of the nuclear spindle62
70311663Chromatidstwo identical chromosomes that split and contain the same genetic material63
70311664Centromerea specialized condensed region of each chromosome that appears during mitosis where the chromatids are held together to form an X shape64
70311665Chromosomesthreadlike structures made of DNA molecules that contain the genes65
70311666centrioleone of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope66
70311667Gonadsreproductive glands-male, testes; female, ovaries67
70311668testesThe male gonads, which produce sperm and secrete male sex hormones.68
70311669ovariesfemale gonads69
70311670gametessex cells or reproductive cells70
70311671zygotethe fertilized egg; it enters a 2-week period of rapid cell division and develops into an embryo71
70311672egganimal reproductive body consisting of an ovum or embryo together with nutritive and protective envelopes72
70311673spermthe male reproductive cell73
70311674trisomychrosomal abnormality in which there is one more than the normal number of chromosomes in a cell74
70311675segregation(genetics) the separation of paired alleles during meiosis so that members of each pair of alleles appear in different gametes75
70311676Polar Bodya small cell containing little cytoplasm that is produced along with the oocyte and later discarded76
70311677dominanttrait that will show up in an organism's phenotype if gene is present77
70311678Alleleone of two alternate forms of a gene that can have the same locus on homologous chromosomes and are responsible for alternative traits78
70311679X chromosomethe sex chromosome that is present in both sexes: singly in males and doubly in females79
70311680Y chromosomethe sex chromosome that is carried by men80
70311681RecessiveThe inherited characteristic often masked by the dominant characteristic and not seen in an organism.81
70311682hemoglobina hemoprotein composed of globin and heme that gives red blood cells their characteristic color82
70311683Prophase IEach chromosome pairs with its corresponding homologous chromosome to form a tetrad.83
70311684metaphase IThe second phase of meiosis I. During metaphase I the paired homologous chromsomes (tetrads) align at the center of the cell (the metaphase plate).84
70311685Metaphase IIthe chromosomes line up in a similar way to the metaphase stage of mitosis85
70311686Anaphase IThe third phase of meiosis I. During anaphase I the replicated homologous chromosomes are separated (the tetrad is split) and pulled to opposite sides of the cell.86
70311687Telophase I2 cells form, each cell is a haploid but each chromosome is in replicated form87
70311688Prophase IIThe first phase of meiosis II. Prophase II is identical to mitotic prophase, except that the number of chromosomes was reduced by half during meiosis I.88
70311689Anaphase IIthe sister chromatids separate and move toward opposite ends of the cell89
70311690Telophase IIThe fourth and final phase of meiosis II. Telophase II is identical to mitotic telophase, except that the number of chromosomes was reduced by half during meiosis. I.90
70311691Homologous chromosomeschromosomes that have the same sequence of genes, that have the same structured, and that pair during meisosis91
70311692sister chromatidsidentical copies of a chromosome; full sets of these are created during the S(DNA replication) subphase of interphase92
70311693cancerany malignant growth or tumor caused by abnormal and uncontrolled cell division93
70311694proteinany of a large group of nitrogenous organic compounds that are essential constituents of living cells94
70311695RNAribonucleic acid, a natural polymer that is present in all living cells and that plays a role in protein synthesis95
70311696double helixa pair of parallel helices intertwined about a common axis96
70311697ribosea five-carbon sugar present in RNA97
70311698amino acidbasic building blocks of protein molecules98
70311699uracila nitrogen-containing base found in RNA (but not in DNA) and derived from pyrimidine99
70311700nitrogen baseA basic compound that contains nitrogen, such as a purine or pyrimidine100
70311701replicationthe act of making copies101
70311702nucleotidemonomer of nucleic acids made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base102
70311703transcription(genetics) the organic process whereby the DNA sequence in a gene is copied into mRNA103
70311704translation(genetics) the process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm104
70311705adenineThe base that pairs with Thymine in DNA105
70311706thyminea base found in DNA (but not in RNA) and derived from pyrimidine106
70311707cytosinea base found in DNA and RNA and derived from pyrimidine107
70311708guanineThe base that pairs with Cytosine in DNA108
70311709tRNAtransfer RNA; type of RNA that carries amino acids to the ribosome109
70311710mRNAmessenger RNA; type of RNA that carries instructions from DNA in the nucleus to the ribosome110
70311711rRNAribosomal RNA; type of RNA that makes up part of the ribosome111
70311712protein synthesisthe formation of proteins by using information contained in DNA and carried by mRNA112
70311713fertilizationprocess in sexual reproduction in which male and female reproductive cells join to form a new cell113
70311714independent assortmentthe random distribution of the pairs of genes on different chromosomes to the gametes114
70311715phenotypewhat an organism looks like as a consequence of its genotype115
70311716genotypegenetic makeup of an organism116
70311717deoxyribosea sugar that is a constituent of nucleic acids117
70311718gene(genetics) a segment of DNA that is involved in producing a polypeptide chain118
70311719homozygeoushas two identical alleles for a trait (dominant-dominant; recessive-recessive)119
70311720heterozygeousan organism tht has 2 diff allele for a trait (dominant-recessive)120
70311721codominantA heterozygote in which both alleles are fully expressed121
70311722progenythe immediate descendants of a person122
70311723punnet squaresDiagram showing the gene combinations that might result from a genetic cross123
70311724pedigreea diagram that shows the occurrence of a genetic trait in several generations of a family124
70311725autosomalall the other genes in the body that are not sex-linked.125
70311726embryoan animal organism in the early stages of growth and differentiation that in higher forms merge into fetal stages but in lower forms terminate in commencement of larval life126
70311727geographic isolationform of reproductive isolation in which two populations are separated physically by geographic barriers such as rivers, mountains, or stretches of water127
70311728interbreedingreproduction by parents of different species128
70311729gene poolcombined genetic information of all the members of a particular population129
70311730punctuated equilibriuma theory of evolution holding that evolutionary change in the fossil record came in fits and starts rather than in a steady process of slow change130
70311731variationsany difference between individuals of the same species131
70311732convergencethe occurrence of two or more things coming together (when species look identical but in reality do not have the same traits)132
70311733adaptationwhen species physically change overtime due to their environment133
70311734fossilsthe perserved trace, imprint, or remains of a plant or animal134
70311735comparative anatomyThe comparison of body structures and how they vary among species135
70311736niche(ecology) the status of an organism within its environment and community (affecting its survival as a species)136
70311737virusan extremely small organism which causes disease in humans, animals and plants137
70311738secondary consumerAn organism that eats primary consumers138
70311739primary consumersanimals that feed on producers; ex. herbivores139
70311740organellessmall structures in the cytoplasm that do special jobs140
70311741spindle fibershelp pull apart the cell during replication and are made up of micrtubules141
70311742kingdomone of seven biological categories: Monera or Protoctista or Plantae or Fungi or Animalia142
70311743phylummajor classification, second to kingdom, of plants and animals; category ranking below a kingdom and above a class; division143
70311744class(biology) a taxonomic group containing one or more orders144
70311745Ordersecond to class ranking in the taxonomic system145
70311746family(biology) a taxonomic group containing one or more genera146
70311747genusa classification grouping that contains similar, closely related organisms147
70311748species(biology) taxonomic group whose members can interbreed148
70311749bryophytesA nonvascular plant that lives on the land; mosses, liverworts, and hornworts149
70311750pterophytesGroup of seedless plants that includes ferns, horsetails and whisk ferns150
70311751gymnospermswoody plants that produce seeds, but their seeds are not enclosed in fruits151
70311752angiospermsflowering plants that produce seeds in fruit152
70311753intestinethe part of the alimentary canal between the stomach and the anus153
70311754pharynxthe passage to the stomach and lungs154
70311755esophagusthe passage between the pharynx and the stomach155
70311756mouththe opening through which food is taken in and vocalizations emerge156
70311757gizzardthick-walled muscular pouch below the crop in many birds and reptiles for grinding food157
70311758cropa pouch in many birds and some lower animals that resembles a stomach for storage and preliminary maceration of food158
70311759autotrophplant capable of synthesizing its own food from simple organic substances159
70311760heterotrophan organism that depends on complex organic substances for nutrition160
70311761phylogeny(biology) the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms161
70311762fungithe taxonomic kingdom of lower plants162
70311763amphibiansvertebrates that live in water and on land, smooth skin covers body, lay eggs, cold blooded163
70311764arthropodsinvertebrates that have an external skeleton, a segmented body, and jointed leg attachments called appendages164
70311765avesbirds165
70311766mammalsvertebrates that live on land, fur or hair covers body, live birth, warm blooded166
70311767decomposition(biology) decaying caused by bacterial or fungal action167
70311768coelomfluid-filled body cavity lined with mesoderm168

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