Hghs biology eoc
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Hghs biology eoc Presentation Transcript

  • 1. Cells3.How is a plant cell different from an animal cell?A. An animal cell has a cell membrane that allows certain substances to pass through.B. An animal cell has central vacuole for storing materials.C. A plant cell has a cell wall for support and protection.D. A plant cell has ribosomes for assembling proteins.
  • 2. Cells3. Different types of cells can have certain organelles and structures in common. Which types of cells definitely contain cells walls?A. Plant and animal cellsB. Plant and eukaryotic cellsC. plant and prokaryoticD. Animal and eukaryotic cells
  • 3. Cells3. Which of the following accurately states a difference states a difference between plant and animal cell?A. Animal cells have stomata that allow for the exchange of gases.B. Plant cells have thylakoids that are sites of chemical reactions.C. Plant cells have stromal cells that make up connective tissue.D. Animal cells have chloroplasts that turn glucose into APT
  • 4. Cells4. Bacteria are prokaryotic cells. By contrast , animal , plant , and fungal cells are eukaryotic. What is the main difference between prokaryotes and eukaryotes?F. Eukaryotes have a cell wall.G. Prokaryotes cannot live without a host.H. Eukaryotes copy DNA and are able to reproduce.I. Prokaryotes do not have a membrane-bound nucleus.
  • 5. Cells4. If you examined a cell under a microscope and found nucleus and other organelles , how would you classify the cell?F. It is a plant cell.G. It is an animal cell.H. It is a eukaryotic cell.I. It is a prokaryotic cell.
  • 6. Cells4. Cells are classified as either prokaryotic or eukaryotic according top differences in their structure. However, there cells also share traits. Which of the following may be found in all prokaryotic and eukaryotic.F. NucleusG. Cell wallH. ChloroplastsI. Plasma membrane
  • 7. Cells7. Which piece of the scientific knowledge best supports the idea of the cell theory that cells come from existing cells.A. Cells are the smallest structures that carry out specialized functions in a living organism.B. Multicellular organisms have chromosomes located in membrane-bound nuclei.C. Some members of a species display a trsit due to mutations in genetic coding.D. Chromosomes are copied during the replication process.
  • 8. Cells7. In the past , some scientist accepted the theory of spontaneous generation. This theory states that organisms can arise from nonliving matter. Now scientist genereally accept cell theory to explain the origin and growth of new organism. Which of these statements is a key idea of cell theory that disproves the theory of spontaneous generation?A. The cell is the basic unit of life.B. All living things are made of matter.C. All cells arise from pre-existing cells by division.D. All cells are formed from the combination of two other cells.
  • 9. Plant structure and processes12. Jenny is comparing the reproductive structures of different species in the plant kingdom. Which structures would most useful for determining angiosperms from gymnosperms?A. Fruits and conesB. Anthers and pistilsC. Xylem and phloemD. Needles and pollen
  • 10. Plant structure and processes12. For which important process in the plant physiology do openings on the undersides of leaves need to be open?F. PhotosynthesisG. PhototropismH. ReproductionI. Respiration
  • 11. Plant structure and processes12. The leaf cells of green plants usually contain thylakoids. The root cells of green plants do not usually contain these structures, or contain fewer of them. Which statement best explains why?F. Root cells eject organelles to make space for water and nutrients to pass through the roots.G.Roots cells are simpler and do not need energy to perform their specialized functions.H.Leaf cells are large enough to contain thylakoids, but the root cells are not.I. Leaf cells are the primary site for light-dependent chemical reactions.
  • 12. Plant structure and processes18. Which pf the following events indicates that a plant’s reproductive system has successfully carried out its function?F. A seed forms.G. A flower opens.H. A root system expands.I. A sprout grows to maturity.
  • 13. Plant structure and processes23.Which type of dermal cell has more chloroplasts than other dermal cells because it has greater energy needs?A. CuticleB. Guard cellsC. Lower epidermal cellsD. Upper epidermal cells
  • 14. Plant structure and processes18. What type of cell is indicated by label B?F. An epidermal cellG. A guard cellH. A stomataI. A nucleus
  • 15. Plant structure and processes46.What is one of the main advantages of asexual reproduction?F. It occurs more slowly than sexual reproduction.G. There is a smaller chance of mutation.H. The offspring varies from the parent.I. It creates more genetic vartiety.
  • 16. Plant structure and processes23.Which fact about the apical meristem makes this a good suggestion?A. Enzymes in the apical meristem carry out DNA replication.B. Photosynthesis takes place in the chloroplasts of green plant cells.C. Auxins produced in the meristem inhibit the growth of lateral buds.D. The apical meristem uses triphosphate (ATP) as its energy source.
  • 17. DNA Replication and Protein Synthesis38. The first step in DNA replication occurs when the DNA melecules separates into into two strands. What is the next step in DNA replication?F. DNA polymerase joins the individual nucleotides.G. Enzymes produce two new complementary strands.H. Enzymes break down the hydrogen bonds between base pairs.I. DNA polymerase “proofreads” each strand to make sure the sequence is correct