Gen Bio Unit 1 Exam Study Guide Answers
Gen Bio Unit 1 Exam Study Guide Answers BIOL 2051
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This 4 page Study Guide was uploaded by Emily Banks on Monday September 12, 2016. The Study Guide belongs to BIOL 2051 at University of Colorado Denver taught by Dr. Laurel Beck in Fall 2016. Since its upload, it has received 88 views. For similar materials see General Biology 1 in Biology at University of Colorado Denver.
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Date Created: 09/12/16
Study Guide Unit 1 – Answers Chapter 1 1. The study of living things 2. Cells and Organization, Energy use and Metabolism, Response to Environmental Changes, Regulation and Homeostasis, Growth and Development, Reproduction, and Biological Evolution 3. Cells, Tissue, Organ, Organism, Population, Community, Ecosystem, Biosphere 4. • Cells: made of atoms and larger molecules • Tissue: cells of the same type • Organ: contains 2 or more tissue types • Organism: anything that contains everything it needs to live • Population: group of organisms living together • Community: populations of 2 or more species • Ecosystem: interactions of the community and the environment • Biosphere: all the places on Earth where living organisms exist 5. True. 6. Compounds that can be broken down to release energy. 7. Breakdown and buildup of various compounds within the cell. 8. False, they must be able to adapt to changes around them. 9. The process by which organisms regulate their cells to maintain stable conditions. 10. Mitosis is asexual reproduction and Meiosis is for sexual reproduction. 11. Asexual reproduction is cell division, mainly used by bacteria. Sexual reproduction is the combination of 2 different cells from different individuals to make a new organism. 12. It is how a population of organisms are modified over many generations. 13. When advantageous traits get passed on to the next generation instead of disadvantageous traits. 14. • Vertical descent with mutation: observe the lineage or series of ancestors for a particular species. • Horizontal gene transfer: gene exchange from one species to another or different species 15. A grouping of species based on similar characteristics. 16. Eukaryotic, and prokaryotic which include bacteria and archaea. 17. Study of genes. 18. Study of proteins. 19. • Observations & Develop Questions based off the observations • Hypothesis & Prediction • Experimentation • Data Collection & Analysis • Accept or Reject Hypothesis • New Question 20. Hypotheses and theories are always being changed and bettered. Therefore, the New Question step is the start or beginning of a new hypothesis. Chapter 2 1. Makes up 60-70% of humans, 95% of plants, it is a big environmental component, a part of many chemical reactions, polar. 2. Slightly charged portions of the molecule. 3. No difference in charge throughout the molecule. 4. Polar. 5. A covalent bond. 6. A hydrogen bond. 7. True, the interaction between the positive and negative portions are weak. 8. When water is heated, there are fewer stable hydrogen bonds because they are broken, therefore liquid water is turned into a vapor, or gas. When water is cooled there are more stable hydrogen bonds because cooling the water allows more hydrogen bonds to form, therefore, liquid water turns into a solid, ice. 9. Most substances get smaller; water expands when it is frozen because it is less dense due to the more hydrogen bonds. 10. Example: Kool-Aid • Solute: anything that can dissolve in a liquid • Solvent: the liquid in which things can be dissolved • Solution: solutes dissolved in solvents 11. Hydrophilic 12. Hydrophobic 13. Strong acids completely dissociate in H2O. Weak acids, some will remain intact; only some will dissociate. 14. Direct bases release OH- into H2O. Indirect bases absorb H+ from H2O. 15. High concentration means that it is acidic and 7 and below on the pH scale. Low concentration means that it is basic and 7 and above on the pH scale. Chapter 3 1. A group of atoms that are important as a group for chemical reactions. 2. Hydroxyl, Carbonyl, Carboxyl, Amino, Sulfhydryl, Phosphate, and Methyl. 3. Made by bonding together smaller organic molecules called monomers. 4. Many monomers bound together make a polymer. 5. True. 6. The breaking apart of a bond between monomers by adding H2O to the bond. 7. Large organic molecules (polymers) built of many monomers. 8. Carbohydrates, Proteins, and Nucleic acids. 9. Condensation reactions, forming a covalent bond between monosaccharides. 10. Gene regulation, motor proteins, defense proteins, metabolic enzymes, cell signaling, structural proteins, transporters/ membrane transport proteins. 11. Held together by peptide bonds, formed by condensation/ dehydration reactions. 12. True. 13. No, primary structure is simple and quaternary structure is more complex with multiples. 14. Unfolding a protein messes up the structure and function of that protein. Example: pH, Salinity, Temperature, Organic solvents 15. B, DNA and RNA are nucleic acids and they provide the information and direction for protein synthesis. 16. DNA: deoxyribose RNA: ribose 17. Purines have 2 rings and are A & G. Pyrimidines have 1 ring and are U, T, & C. 18. Monomers differ in structure between DNA and RNA, Nitrogen bases pair up in DNA, A & T, G & C. 19. They are not true macromolecules, no set monomer, mostly made up of carbon & hydrogen, hydrophobic and non-polar. 20. Triglycerides, Phospholipids, and Steroids. Chapter 4 1. A cell. 2. • All living things are made of cells • Cells are the smallest unit of a living organism • All cells arise from preexisting cells 3. • Prokaryotes - No nucleus - No membrane bound nucleus § DNA free within the cell à nucleoid - Plasma membrane § Phospholipids - Cytoplasm - Often have a cell wall § Extensive structure existing outside the membrane - Typically, on the smaller side of the range of cells • Eukaryotes - Have a nucleus - Have a membrane bound nucleus § Contains DNA - Plasma membrane § Phospholipids - Internal, membrane bound organelles - Cytoplasm - Some have cell walls, some don’t - Can be large 4. Having more surface area to volume, for example, a baseball might be smaller but it has more surface area to volume ratio than a basketball. 5. Membrane, Cytoplasm, Nucleus and Endomembrane System 6. Rough endoplasmic reticulum, Smooth endoplasmic reticulum, Lysosome, Vacuole, Golgi apparatus 7. Mitochondria, Chloroplast, Peroxisome
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