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Unit 6 Review

Unit 6 Review . Chapter 18 Virus/bacteria Ch.19 Protists Ch. 20 Fungi. Section 1 Check. Question 1. Which of the following is NOT a reason that viruses are considered to be nonliving? ( TX Obj 3; 4C ). A. Viruses don’t replicate. B. Viruses don’t respire.

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Unit 6 Review

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  1. Unit 6 Review Chapter 18 Virus/bacteria Ch.19 Protists Ch. 20 Fungi

  2. Section 1 Check Question 1 Which of the following is NOT a reason that viruses are considered to be nonliving? (TX Obj 3; 4C) A. Viruses don’t replicate. B. Viruses don’t respire. C. Viruses don’t grow. D. Viruses don’t develop.

  3. Section 1 Check Question 1 Which of the following is NOT a reason that viruses are considered to be nonliving? (TX Obj 3; 4C) A. Viruses don’t replicate. B. Viruses don’t respire. C. Viruses don’t grow. D. Viruses don’t develop. The answer is A.

  4. Section 1 Check Question 2 Which is NOT a component of a virus? (TX Obj 3; 4C) A. RNA B. capsid C. DNA D. phage

  5. Section 1 Check Question 2 Which is NOT a component of a virus? (TX Obj 3; 4C) A. RNA B. capsid C. DNA D. phage The answer is D.

  6. Section 1 Check Question 3 Which of the following is NOT determined by the arrangement of proteins in the capsid of a virus? (TX Obj 3; 4C) A. shape B. what cell can be infected by the virus C. whether or not the virus will have an envelope around it D. how the virus infects a cell

  7. Section 1 Check Question 3 Which of the following is NOT determined by the arrangement of proteins in the capsid of a virus? (TX Obj 3; 4C) A. shape B. what cell can be infected by the virus C. whether or not the virus will have an envelope around it D. how the virus infects a cell

  8. Section 1 Check Question 4 What two ways do viruses have of getting into host cells? (TX Obj 3; 4C) Answer The virus can inject its nucleic acid into the host cell, or attach to the host cell’s membrane and become surrounded by the membrane and placed in a vacuole. The virus then bursts out of the vacuole and releases its nucleic acid into the cell.

  9. Section 1 Check Question 5 In the lytic cycle, after the host’s metabolic machinery makes viral nucleic acid and proteins the next phase is _______. (TX Obj 3; 4C) A. lysis and release B. replication C. assembly D. attachment

  10. Section 1 Check Question 5 In the lytic cycle, after the host’s metabolic machinery makes viral nucleic acid and proteins the next phase is _______. (TX Obj 3; 4C) A. lysis and release B. replication C. assembly D. attachment

  11. Section 2 Check Question 1 Which of the following best describes archaebacteria? (TX Obj 3; 4D) A. anaerobic autotrophs B. photosynthetic autotrophs C. chemosynthetic autotrophs D. parasitic heterotrophs

  12. Section 2 Check Question 1 Which of the following best describes archaebacteria? (TX Obj 3; 4D) A. anaerobic autotrophs B. photosynthetic autotrophs C. chemosynthetic autotrophs D. parasitic heterotrophs The answer is A.

  13. Section 2 Check Question 2 What part of a bacterial cell is most affected by penicillin? (TX Obj 3; 4D) A. pilus B. plasmid C. flagellum D. cell wall

  14. Section 2 Check Question 2 What part of a bacterial cell is most affected by penicillin? (TX Obj 3; 4D) A. pilus B. plasmid C. flagellum D. cell wall

  15. Section 2 Check Question 4 Given their rapid reproductive rates, why aren’t there more bacteria than there actually are? (TX Obj 3; 4D) Answer Bacteria don’t always have ideal growing conditions. They run out of nutrients and water, they poison themselves with their own wastes, and predators eat them.

  16. Section 2 Check Question 5 What is a pilus used for in a bacterium? (TX Obj 3; 4D)

  17. Section 2 Check A pilus helps a bacterium stick to a surface. It is also a bridge through or on which two bacteria can exchange DNA. Cell Wall Capsule Chromosome Flagellum Plasma membrane Pilus Plasmid

  18. Section 1 Check Question 1 What characteristic do all protists share? (TX Obj 2; 8C) Answer

  19. Section 1 Check Question 1 What characteristic do all protists share? (TX Obj 2; 8C) Answer They are all eukaryotes. Most of their metabolic processes occur inside their membrane-bound organelles.

  20. Section 1 Check Question 2 What common function do pseudopodia, cilia, and flagella share in protozoans? (TX Obj 2; 8C) Answer

  21. Section 1 Check Question 2 What common function do pseudopodia, cilia, and flagella share in protozoans? (TX Obj 2; 8C) Answer These are all structures that protozoans use to move.

  22. Section 1 Check Question 3 Which amoebas possess shells? (TX Obj 2; 8C) A. plasmodia B. paramecia C. zoomastigina D. foraminiferans

  23. Section 1 Check Question 3 Which amoebas possess shells? (TX Obj 2; 8C) A. plasmodia B. paramecia C. zoomastigina D. foraminiferans

  24. Section 1 Check Question 4 Explain how a paramecium eats. (TX Obj 2; 8C)

  25. Section 1 Check Anal pore Food moves into the paramecium’s gullet, becoming enclosed at the end in a food vacuole. Enzymes break down the food, and the nutrients diffuse into the cytoplasm. Cilia Oral groove Gullet Contractile vacuole Micronucleus and macronucleus

  26. Section 2 Check Question 1 How do multicellular algae resemble and differ from plants? (TX Obj 2; 8C)

  27. Section 2 Check Algae resemble plants in that they are sometimes large and green. However, they do not have roots, stems, or leaves.

  28. Section 2 Check Question 2 Which of the following pairs is not related? (TX Obj 2; 8C) A. algae – oxygen B. sporozoans – photosynthesis C. amoebas – pseudopodia D. spirogyra – fragmentation

  29. Section 2 Check Question 2 Which of the following pairs is not related? (TX Obj 2; 8C) A. algae – oxygen B. sporozoans – photosynthesis C. amoebas – pseudopodia D. spirogyra – fragmentation The answer is B.

  30. Section 2 Check Question 3 Which of the following is NOT a common feature of radiolarians and diatoms? (TX Obj 2; 8C) A. both reproduce asexually B. both have shells composed of silica C. both engage in photosynthesis D. both are unicellular

  31. Section 2 Check Question 3 Which of the following is NOT a common feature of radiolarians and diatoms? (TX Obj 2; 8C) A. both reproduce asexually B. both have shells composed of silica C. both engage in photosynthesis D. both are unicellular

  32. Section 3 Check Question 1 Slime molds are classified by _______. (TX Obj 2; 8C) A. the way they reproduce B. the way they move C. their pigmentation D. their shape

  33. Section 3 Check Question 1 Slime molds are classified by _______. (TX Obj 2; 8C) A. the way they reproduce B. the way they move C. their pigmentation D. their shape

  34. Section 3 Check Question 2 A mass of cytoplasm that contains many diploid nuclei but no cell walls or membranes is a _______. (TX Obj 2; 8C) A. paramecium B. amoeba C. plasmodium D. spore

  35. Section 3 Check Question 2 A mass of cytoplasm that contains many diploid nuclei but no cell walls or membranes is a _______. (TX Obj 2; 8C) A. paramecium B. amoeba C. plasmodium D. spore The answer is C.

  36. Section 1 Check Question 1 Hyphae develop from _______. (TX Obj 2; 8C) A. spores B. chitin C. cellulose D. rhizoids

  37. Section 1 Check Question 1 Hyphae develop from _______. (TX Obj 2; 8C) A. spores B. chitin C. cellulose D. rhizoids

  38. Section 1 Check Question 2 A mycelium is composed of _______. (TX Obj 2; 8C) A. spores B. hyphae C. sporangia D. conidiophores

  39. Section 1 Check Question 2 A mycelium is composed of _______. (TX Obj 2; 8C) A. spores B. hyphae C. sporangia D. conidiophores The answer is B, hyphae.

  40. Section 1 Check Question 3 What are three different functions that hyphae can perform in a mycelium? (TX Obj 2; 8C) Answer

  41. Section 1 Check Question 3 What are three different functions that hyphae can perform in a mycelium? (TX Obj 2; 8C) Answer Some hyphae anchor the fungus, some invade the food source, and others form fungal reproductive structures.

  42. Section 1 Check Question 4 Explain how a fungus performs extracellular digestion. (TX Obj 2; 8C) Answer

  43. Section 1 Check Question 4 Explain how a fungus performs extracellular digestion. (TX Obj 2; 8C) Answer Hyphae grow into the cells of the food source, releasing digestive enzymes that break down large organic molecules into smaller molecules. These molecules move in the free-flowing cytoplasm to where they are needed for growth, repair, and reproduction.

  44. Section 1 Check Question 5 Which type of fungi lives in a symbiotic relationship with another organism? (TX Obj 2; 8C) A. parasites B. saprophytes C. mutualists D. decomposers

  45. Section 1 Check Question 5 Which type of fungi lives in a symbiotic relationship with another organism? (TX Obj 2; 8C) A. parasites B. saprophytes C. mutualists D. decomposers The answer is C, mutualists.

  46. Section 2 Check Question 1 According to the following figure, which method is NOT used by fungi to reproduce asexually? (TX Obj 2; 8C)

  47. Section 2 Check A. producing zygospores B. fragmentation Spores (n) Spores (n) Sporangia Sporangium - Mating strain (n) Hypha + Mating strain (n) Gametangia Zygospore Stolon Meiosis Rhizoids Germination Asexual Reproduction Sexual Reproduction

  48. Section 2 Check D. producing spores C. budding Spores (n) Spores (n) Sporangia Sporangium - Mating strain (n) Hypha + Mating strain (n) Gametangia Zygospore Stolon Meiosis Rhizoids Germination Asexual Reproduction Sexual Reproduction

  49. Section 2 Check The answer is A, producing zygospores. Spores (n) Spores (n) Sporangia Sporangium - Mating strain (n) Hypha + Mating strain (n) Gametangia Zygospore Stolon Meiosis Rhizoids Germination Asexual Reproduction Sexual Reproduction

  50. Section 2 Check Question 2 The mushrooms you typically eat make up what part of the fungus? (TX Obj 2; 8C) Answer

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