EOC Flashcard 1 FRONT SIDE: BACK SIDE: Life Processes Synthesis – to make (ex. protein synthesis) Transport – to move (ex. osmosis) Excretion – getting rid of wastes Respiration – to make ATP from sugar (aerobic or anaerobic) Nutrition – food getting (producer or consumer) Growth and Development Reproduction – to make more cells or organisms (mitosis/asexual or sexual) Regulation – to maintain homoestasis EOC Flashcard 2 FRONT SIDE Monomers/Subunits of Organic Molecules BACK SIDE Carbohydrates = monosaccharides Lipids = glycerol and fatty acids Proteins = amino acids Nucleic acids = nucleotides EOC Flashcard 3 FRONT SIDE: Functions Of Enzymes BACK SIDE: Enzymes are proteins Fit with substrate like a “Lock and Key” – if enzymes “denatures” it won’t fit! Act as a “catalyst” (speed up reactions) Lower activation energy Work best at “Optimum” conditions! (this is different for each enzyme) EOC Flashcard 4 BACK SIDE: FRONT SIDE: Function of … Chloroplasts Chloroplasts – site of photosynthesis Mitochondria Mitochondria – site of cellular respiration Ribosome Ribosome – site of protein synthesis ** Site means location!** EOC Flashcard 5 FRONT SIDE: Function of the Cell Membrane BACK SIDE: Selectively permeable (regulates materials coming in/out of the cell) Gives cytoplasm a boundary / shape HOMEOSTASIS (home stays as it is!!) EOC Flashcard 6 Differences between Plant and Animal Cells Plant Cells – have cell walls, chloroplasts, large vacuoles Animal Cells – have Centrioles (used for cell division) *BOTH ARE EUKARYOTIC! (have membrane bound organelles and a nucleus) EOC Flashcard 7 FRONT SIDE: What happens when cells are placed in a saltier environments? Why? BACK SIDE: Cells lose water in saltier than usual environments because of osmosis!! EOC Flashcard 8 FRONT SIDE: BACK SIDE: Photosynthesis And Cellular Respiration *Opposites of each other* Photosynthesis Converts sunlight into chemical energy CO2 + H20 + light glucose + O2 Respiration Converts sugars into cell energy (ATP) C6H12O6 + O2 H2O + CO2 + ATP Used by ALL ORGANISMS!! EOC Flashcard 9 FRONT SIDE: BACK SIDE: Mitosis vs. Meiosis Mitosis Makes identical copy of cell Produces 2 daughter cells Used by somatic body cells Meiosis Reduces chromosome number by half Produces 4 daughter cells Makes haploid gametes EOC Flashcard 10 FRONT SIDE: Genetic Recombination BACK SIDE: Possible gametes: AB ab A A B B a a b b A A B b a a B b Crossing Over Takes place during MEIOSIS Possible gametes: AB Ab aB ab EOC Flashcard 11 Gametes Sex cells Haploid (contains only one copy of each chromosome/half of diploid) Fuse together in fertilization EOC Flashcard 12 Asexual Vs. Sexual Reproduction Asexual = one parent; makes IDENTICAL COPY!! Sexual = Two parents; genetic diversity; uses gametes (egg and sperm) EOC Flashcard 13 What is a gene? Found on a chromosome Section of DNA Used to make a protein Controls traits! EOC Flashcard 14 What happens in Protein Synthesis DNA transcription (mRNA) translation protein made causes trait EOC Flashcard 15 If DNA is…. CGAAGCATT What would be…. Complementary DNA mRNA COMPLEMENTARY DNA (give) CGA AGC ATT (new) GCT TCG TAA COMPLEMENTARY mRNA (DNA) CGA AGC ATT (mRNA) GCU UCG UAA EOC Flashcard 16 FRONT Three types of RNA and their function. BACK mRNA – makes “copy” of DNA/gene and takes to ribosome rRNA – makes up ribosome along with proteins tRNA – brings an amino acid to the ribosome, anticodon pairs with mRNA codon EOC Flashcard 17 Recombinant DNA DNA from two different species! Plasmid Human gene cleave splice together Gene+plasmid Recombinant DNA EOC Flashcard 18 Gel Electrophoresis Makes a DNA Fingerprint Separates DNA by size (smallest goes farthest) Identifies paternity and criminals EOC Flashcard 19 Homozygous Dominant (AA) Heterozygous (Aa) Homozygous recessive (aa) * Recessive phenotype Dominant Phenotype Three Genotypes EOC Flashcard 20 Paths of Inheritance (be able to do punnett squares) Dominant = one allele dominant Recessive = allele “hidden” by dominant Codominance= both alleles equal, both show up! (AB) Incomplete Dominance = Neither allele dominant, blending together (AA’) Sex-linked = on X chromosome, no male carriers (XA Xa) EOC Flashcard 21 Karyotype Picture of chromosomes (should have a total of 46 (23 pairs) Shows chromosomal abnormalities (Ex. Down’s Syndrome = Trisomy 21) Usually follows an amniocentesis EOC Flashcard 22 Pedigrees Parents are carriers! Rules to Remember: 1. Filled in shapes have the trait 2. Trait may be dominant or recessive! 3. If trait skips a generation, it’s probably recessive 4. Sex-linked traits are passed from mother to son EOC Flashcard 23 Viruses Not living because they cannot reproduce outside a living organism (not made of cells) Two reproductive cycles Lytic – fast, destroys cell Lysogenic – slower, viral genetic material hides in cell EOC Flashcard 24 Bacteria Prokaryotic cells (no nucleus; no membranebound organelles) unicellular Important for: decomposers, for Nitrogen cycle, for gene research (recombinant DNA with plasmids) First cells to evolve EOC Flashcard 25 Adaptations of Unicellular organisms For movement For water balance Cilia Flagella Pseudopodia Contractile vacuole For response to stimuli Eyespot EOC Flashcard 26 Causes of Evolution Adaptive radiation – a population splits and different traits are adaptive. Geographic isolation part of a population is separated. Genetic diversity – by mutation or in gene pool Natural selection EOC Flashcard 27 Evidence for Evolution Biochemical analysis (DNA, amino acids, proteins) Fossil record Anatomy (if similar bone arrangement = homologous) Development / embryology * More in common = common ancestor* EOC Flashcard 28 Natural Selection (Darwin) Variation in populations Overpopulation or predators Competition for survival/mates Survival/reproduction of best adapted / fittest. EOC Flashcard 29 Taxonomic Levels: From most general/inclusive to most specific/related Domain (general / most number of species Kingdom Phylum Class Order Family Genus Scientific name Species * Most specific/ may interbreed EOC Flashcard 30 Cladograms or Phylogenic Trees Show evolutionary relationships among organisms Closer on tree, more closely related EOC Flashcard 31 Plant responses to stimuli TROPISMS Phototropism (light) Geotropism (gravity) Thigmotropism (contact) Controlled by HORMONES Auxin (cell elongation) Cytokinen (cell division) Ethylene (fruit ripening) EOC Flashcard 32 Flowers And Seeds Flowers – reproductive organ of angiosperm plants Male part = stamen/pollen Female part = carpel or pistil (produce egg) Pollination = transfer of pollen Seed = plant embryo + stored food (endosperm). Surrounded by fruit (formed from ovary of plant.) EOC Flashcard 33 Behaviors as Adaptations Instinctive behaviors improve survival rates. Protective behaviors (spray, teeth bared) turn predators away and defends resources Parental behaviors (advanced in birds and mammals) increase survival of young. Communication and courtship allow mate recognition EOC Flashcard 34 Innate Behaviors Genetic and Inborn Automatic (reflex and instinct) Courtship Territoriality Aggression Dominance hierarchy Biological rhythms (migration, clocks) Some communication (need to sing in birds) EOC Flashcard 35 Learned Behaviors Change with experience and practice. Classical conditioning (unrelated stimulus and reward/punishment Operant conditioning (trial and error learning) Insight / reasoning Language EOC Flashcard 36 Food Web D Secondary consumers E C Primary Consumers O M Producers P *Arrows follow transfer for energy O S *Producers have most energy E R *Energy is lost as it move up S (10%rule) EOC Flashcard 37 Carbon Cycle Carbon Cycle - Respiration releases carbon as CO2 (carbon dioxide) Photosynthesis removes carbon and makes sugar (C6H12O6) Human Impact Burning Fossil fuels releases CO2 Deforestation increases the amount of CO2 in the atmosphere EOC Flashcard 38 Symbiosis Mutualism Parasitism Commensalism Two species “living together” permanently Mutualism (+ +) both benefit Parasitism (+ -) One is harmed Commensalism (+, 0) one benefits, the other is neutral EOC Flashcard 39 Environmental Problems Overpopulation – cause of all environmental problems Global warming – too much CO2 in atmosphere increases average global temperature ->flooding, climate change Acid Precipitation – caused when NOx and Sox react with water vapor lower pH of soil and aquatic ecosystems EOC Flashcard 40 Biomagnification Pesticides and contaminants “move up the food chain” Chemical contaminants are stored (bioaccumulation) and magnified in organisms higher up the food chain because predators accumulate pesticides in the bodies of their prey.