WUHSD NCLB Biology Review Ms. Martinez LSHS Investigation & Experimentation (I&E 1c,e,f) MONKEY STAMP 1. Define Hypothesis: 1. Define Hypothesis: a testable possible explanation of an observation. 2. Define Theory: 2. Define Theory: an explanation that has been tested and confirmed many times 3. Why is it necessary for an experiment to include a control group? 3. Why is it necessary for an experiment to include a control group? It is a part of the experiment that is not tested and is used to compare results. 4. What are the steps of the scientific method? 4. What are the steps of the scientific method? 1. Ask a question 5. Data Collection 2. Hypothesis 6. Conclusions 3. Experiment 7. Retest, if 4. Observations necessary STAR STAMP 5. Define monomer: 5. Define monomer: Small, simple molecules 6. Define polymer: 6. Define polymer: Large, complex molecules made from simple monomers 7. Fill in the chart below. Polymer Monomer Carbohydrates (Polysaccharides) Amino Acids Lipids Nucleotides Common Example 7. Fill in the chart below. Polymer Carbohydrates (Polysaccharides) Monomer Common Example Monosaccharide Glucose, C6H12O6 Protein Amino Acids Lipids Glycerol and Fatty acids Nucleic Acids Nucleotides Muscle, Enzymes Oils, waxes DNA and RNA 8. What is the function of an enzyme? 8. What is the function of an enzyme? No Enzyme Enzyme -Is a biological catalyst that speeds up chemical reactions by lowering the activation energy of a reaction. **most end in –ASE 9. What factors can reduce the effectiveness of enzyme function? 9. What factors can reduce the effectiveness of enzyme function? A change in pH, temperature, or substrate concentration. 10. Describe the process in the figure below. 10. Describe the process in the figure below. 1. substrate binds to the active site 2. the reaction occurs 3. the products are released 11. Does the enzyme change during this process? 11. Does the enzyme change during this process? No 12. What happens to the enzyme following this process? 12. What happens to the enzyme following this process? It gets recycled Cell Structure & Function (Cell Biology 1a-e) 13. What is the difference between prokaryotic and eukaryotic cells? 13. What is the difference between prokaryotic and eukaryotic cells? Prokaryotes •Smaller •Simple •No nucleus •No specialized organelles Eukaryotes •Larger •Complex •Nucleus •Many specialized organelles 14. Give an example of a prokaryotic cell: 14. Give an example of a prokaryotic cell: Bacterium 15. Give at least two examples of eukaryotic cells: 15. Give at least two examples of eukaryotic cells: Plant Cell Animal Cell 16. What is a virus? 16. What describes a virus? Protein coat and nucleic acid (DNA or RNA) 17. Why are viruses not considered living cells? 17. Why are viruses not considered living cells? They are not made of cells. 18. What is the function of a ribosome? 18. What is the function of a ribosome? ribosomes synthesize proteins 19. What is the function of the endoplasmic reticulum? (Letter C) 19. What is the function of the endoplasmic reticulum? transports proteins throughout the cell. 20. What is the function of the Golgi apparatus? (Letter G) 20. What is the function of the Golgi apparatus? It packages and prepares proteins for export out of the cell. 21. What are the functions of the cell membrane? 21. What are the functions of the cell membrane? is responsible for maintaining homeostasis in cells 22. Define semipermeable: 22. Define semipermeable: it allows only certain molecules to pass through. Cellular Energy (Cell Biology 1f,g) 23. What is the overall chemical reaction of photosynthesis? 23. What is the overall chemical reaction of photosynthesis? Light Energy + 6H2O + 6CO2 6O2 + C6H12O6 24. Rewrite the equation above using words (instead of chemical formulas). Light Energy + 6H2O + 6CO2 Light Energy + Water + Carbon Dioxide 6O2 + C6H12O6 Oxygen +Glucose 25. What role does chlorophyll have in photosynthesis? 25. What role does chlorophyll have in photosynthesis? is the major light-absorbing pigment in plant photosynthesis 26. In which macromolecule group does glucose belong? 26. In which macromolecule group does glucose belong? Carbohydrates (Sugars ends in –ose and so does gross!!) 27. What is the overall chemical reaction of cellular respiration? 27. What is the overall chemical reaction of cellular respiration? C6H12O6 + 6O2 6CO2 + 6H2O + Energy 28. Rewrite the equation above using words (instead of chemical formulas). C6H12O6 + 6O2 Glucose + Oxygen 6CO2 + 6H2O + Energy Carbon Dioxide + Water + Energy 29. What are the three main stages of cellular respiration (in order)? # 1,3, and 5 29. What are the three main stages of cellular respiration (in order)? # 1,3, and 5 Glycolysis (Cytoplasm) Krebs Cycle (Matrix) Electron Transport (Cristae/Inner Membrane) 30. What is the main product of cellular respiration? 30. What is the main product of cellular respiration? ATP 31. What was broken down to produce ATP? 31. What was broken down to produce ATP? Glucose, C6H12O6 DNA & Protein Synthesis (Cell Biology 1d, Genetics 4a-e & 5a-c) 32. Label the parts of the DNA molecule to the right. 32. Label the parts of the DNA molecule to the right. A,B,C,D= Base Pairs E=Alternating Phosphate and Sugar molecules F=Nucleotide (Phosphate, Sugar, Base) 33. Do all cells in a person contain the same DNA sequence? 33. Do all cells in a person contain the same DNA sequence? YES!! 34. If all cells of a multicellular organism contain the same genes, explain how they appear and function differently? 34. If all cells of a multicellular organism contain the same genes, explain how they appear and function differently? -cells only transcribe those portions of genes that they need 35. Describe the nitrogen base-pairing rules for DNA. 35. Describe the nitrogen base-pairing rules for DNA. Guanine with cytosine Adenine with thymine (GCAT) 36. The process of information encoded in DNA being rewritten as mRNA is called . 36. The process of information encoded in DNA being rewritten as mRNA is called Transcription . 37. Determine the mRNA sequence that would be produced from this original template DNA strand. DNA = 5`ATG-GCT-A 3` mRNA= ? 37. Determine the mRNA sequence that would be produced from this original template DNA strand. DNA = 5`ATG – GCT - A 3` mRNA=3`UAC - CGA - U 5` 38. What are the 3 main differences between DNA and RNA? 38. What are the 3 main differences between DNA and RNA? DNA RNA Shape Double Helix Linear Sugar Deoxyribose Ribose Bases GCAT GCAU 39. The process of cells using information from mRNA to produce proteins is called_ . 39. The process of cells using information from mRNA to produce proteins is called_Translation. 40. Label each of the parts in the diagram to the right. 40. Label each of the parts in the diagram to the right. F=mRNA G=Ribosome E=Codon D=Amino acid C=tRNA A=Polypeptide/Protein B=Peptide Bond 41. What type of bonds connect amino acids to produce a protein? 41. What type of bonds connect amino acids to produce a protein? Peptide Bonds Polypeptide/Protein 42. Which amino acids would the mRNA sequence UCA-AUG-GAG produce? 42. Which amino acids would the mRNA sequence UCA-AUG-GAG produce? Ser-Met-Glu 43. List all mRNA codons that code for the amino acid alanine. 43. List all mRNA codons that code for the amino acid alanine. GCU GCC GCA GCG 44. What is the reason for so many different proteins existing, when there are only 20 amino acids? 44. What is the reason for so many different proteins existing, when there are only 20 amino acids? -Each protein is made from a different combination and number of amino acids. 45. Define mutation: 45. Define mutation: -A natural process that produces genetic diversity. -Most mutation are harmless. 46. What are 2 types of mutations? 46. What are 2 types of mutations? 47. What are some possible causes of mutations? 47. What are some possible causes of mutations? Over exposure to UV light, smoking, drinking, x-rays, genetics 48. What could happen as a result of a mutation? 48. What could happen as a result of a mutation? The amino acid sequence can change and a different protein expressed. NORMAL Sickle Cell 49. Inserting foreign DNA into an organism is known as . 49. Inserting foreign DNA into an organism is known as . Genetic Engineering 50. Give an example of how the process above can be beneficial. 50. Give an example of how the process above can be beneficial. 1. To make medicine 2. To make new and better plants and animals 3. To cure diseases Meiosis & Genetics (Genetics 2a-f) 51. Define chromosome: 51. Define chromosome: X-like structure made of DNA and Proteins 52. Define meiosis: 52. Define meiosis: -The process that changes the chromosome number from Diploid, 2n, to Haploid, n. -To produce haploid gametes [sex cells] 53. Which cells undergo meiosis? 53. Which cells are the result of meiosis? -Males= sperm,n -Females= egg,n 54. Define diploid: 54. Define diploid: 2n=Full set of chromosomes found in any somatic cell of an organism 55. Define haploid: 55. Define haploid: -Half the number of chromosomes found in a diploid cell. -Sex cells have a haploid number of chromosomes. 56. Describe what is occurring and the types of cells that would be produced in the diagram to the right. 2n n n n n 56. Describe what is occurring and the types of cells that would be produced in the diagram to the right. 2n n -Crossing-over -Gametes (egg,n, and sperm,n) are made n n n 57. What is the difference between somatic cells and sex cells? 57. What is the difference between somatic cells and sex cells? -Somatic Cells=2n, any cell except sex cells -Sex cells/gametes=n, egg and sperm only 58. Sperm cells and egg cells can also be called . 58. Sperm cells and egg cells can also be called . Gametes Or Sex Cells 59. Which process occurring during prophase 1 of meiosis does this diagram represent? How do you know? 59. Which process occurring during prophase 1 of meiosis does this diagram represent? How do you know? -Crossing-over -Chromatids are exchanging alleles 60. A plant has a genotype of TtPp, list all possible genetic combinations found in the gametes produced: 60. A plant has a genotype of TtPp, list all possible genetic combinations found in the gametes produced: TP Tp tP tp 61. Define allele: 61. Define allele: -different versions of a gene Ex Gene: Flower color alleles: A=purple a=white 62. How many alleles of each gene are passed on from each parent to make a child’s genotype? Give an example. 62. How many alleles of each gene are passed on from each parent to make a child’s genotype? -Half from each parent -ex hair color, eye color 63. Why is random chromosome segregation an important part of meiosis? 63. Why is random chromosome segregation an important part of meiosis? -it ensures a gamete does get two copies of the same allele since it only needs half 64. Describe the process of fertilization (include number of chromosomes and cell types involved). 64. Describe the process of fertilization (include number of chromosomes and cell types involved). 23 + 23 = 46 Egg + Sperm = Zygote 65. How many pairs of autosomes are found in female body cells? What are the sex chromosomes?_______ 65. How many pairs of autosomes are found in female body cells? 22 pairs (44) What are the sex chromosomes? XX (1) 66. How many pairs of autosomes are found in male body cells? What are the sex chromosomes?_______ 66. How many pairs of autosomes are found in male body cells? 22 pairs (44) What are the sex chromosomes? XY (1) Guys are XY!! 67. Which sex chromosome must a father pass on, in order to be sure he has a son? 67. Which sex chromosome must a father pass on, in order to be sure he has a son? Guys are XY!! Y!! STUDY!!!