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A: haploid B: diploid

A: haploid B: diploid. A: haploid B: diploid. A: haploid B: diploid. A:mitosis B : meiosis . A: meiosis I B: meiosis II. A: B: . A: B: . Ch. 8 Exam Review.

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A: haploid B: diploid

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  1. A: haploid B: diploid

  2. A: haploid B: diploid

  3. A: haploid B: diploid

  4. A:mitosis B: meiosis

  5. A: meiosis I B: meiosis II

  6. A: B:

  7. A: B:

  8. Ch. 8 Exam Review ____ 1. The information needed by a cell to direct its activities and to determine its characteristics is contained in molecules of deoxyribonucleic acid (DNA). ____ 2. Each human somatic cell contains two copies of each chromosome for a total of 23 homologous chromosomes. ____ 3. Human sperm and egg cells have 23 chromosomes. ____ 4. Cell division in bacteria and eukaryotes takes place in precisely the same manner. ____ 5. Asexual reproduction occurs by mitosis. ____ 6. Cytokinesis only occurs during metaphase II. True & False: What is the key information? Think about the absolutes (always, never, numbers, names…)

  9. Ch. 8 Exam Review _True_ 1. The information needed by a cell to direct its activities and to determine its characteristics is contained in molecules of deoxyribonucleic acid (DNA). _False 2. Each human somatic cell contains two copies of each chromosome for a total of 23 homologous chromosomes. _True 3. Human sperm and egg cells have 23 chromosomes. _False_ 4. Cell division in bacteria and eukaryotes takes place in precisely the same manner. _True 5. Asexual reproduction occurs by mitosis. _False 6. Cytokinesis only occurs during metaphase II. True & False: What is the key information? Think about the absolutes (always, never, numbers, names…)

  10. Ch. 8 Exam Review ____ 7. In order to fit within a cell, DNA becomes more compact by a. breaking apart into separate genes. b. extending to form very long, thin molecules. c. wrapping tightly around associated proteins. d. being enzymatically changed into a protein. How would DNA fit?

  11. Ch. 8 Exam Review _C__ 7. In order to fit within a cell, DNA becomes more compact by a. breaking apart into separate genes. b. extending to form very long, thin molecules. c. wrapping tightly around associated proteins. d. being enzymatically changed into a protein. How would DNA fit?

  12. Ch. 8 Exam Review ____ 8. Chromatids are a. dense patches within the nucleus. b. bacterial chromosomes. c. joined strands of duplicated genetic material. d. prokaryotic nuclei. What word does it look like?

  13. Ch. 8 Exam Review __C_ 8. Chromatids are a. dense patches within the nucleus. b. bacterial chromosomes. c. joined strands of duplicated genetic material. d. prokaryotic nuclei. What word does it look like? Like tidbits of chromosomes.

  14. Ch. 8 Exam Review ____ 9. The diploid number of chromosomes in a human skin cell is 46. The number of chromosomes found in a human ovum (egg) is a. 46. c. 23. b. 92. d. 12.5. ____ 10. How many chromosomes are in the body cells of an organism that has a haploid number of 8? a. 4 c. 12 b. 8 d. 16 Key words:

  15. Ch. 8 Exam Review _C_ 9. The diploid number of chromosomes in a human skin cell is 46. The number of chromosomes found in a human ovum (egg) is a. 46. c. 23. b. 92. d. 12.5. _D__ 10. How many chromosomes are in the body cells of an organism that has a haploid number of 8? a. 4 c. 12 b. 8 d. 16 Key words: Diploid Haploid numbers

  16. Ch. 8 Exam Review ___ 11. Binary fission a. occurs when two cells collide with each other. b. produces excess energy. c. creates new species. d. is the process by which bacteria reproduce. Binary = Fission =

  17. Ch. 8 Exam Review _D__ 11. Binary fission a. occurs when two cells collide with each other. b. produces excess energy. c. creates new species. d. is the process by which bacteria reproduce. Binary = two Fission = split

  18. Ch. 8 Exam Review ____ 12.metaphase : prophase :: • photon : light particle • G2 : S c. thylakoid : grana d. carbon fixation process : Calvin cycle ____ 13. The phase of mitosis that is characterized by the arrangement of all chromosomes along the equator of the cell is called a. telophase. c.anaphase. b. metaphase. d. prophase. 12. Do you know what this question means? 13. Key words:

  19. Ch. 8 Exam Review _B__12.metaphase : prophase :: • photon : light particle • G2 : S c. thylakoid : grana d. carbon fixation process : Calvin cycle _B__ 13. The phase of mitosis that is characterized by the arrangement of all chromosomes along the equator of the cell is called a. telophase. c.anaphase. b. metaphase. d. prophase. 12. Do you know what this question means? Meta is to pro, as G2 is to S 13. Key words: equator

  20. Ch. 8 Exam Review ____ 14. Refer to the illustration above. The cell in diagram “1” is in a. metaphase. c. anaphase. b. telophase. d. prophase. ____ 15. Refer to the illustration above. The cell shown in diagram “5” is in a. metaphase. c. anaphase. b. telophase. d. prophase.

  21. Ch. 8 Exam Review _C_ 14. Refer to the illustration above. The cell in diagram “1” is in a. metaphase. c. anaphase. b. telophase. d. prophase. _B__ 15. Refer to the illustration above. The cell shown in diagram “5” is in a. metaphase. c. anaphase. b. telophase. d. prophase.

  22. Ch. 8 Exam Review ____16. A typical human cell contains 46 chromosomes. After mitosis and cell division, each of the two new cells formed from the original cell a. gets 23 chromosomes. b. grows new chromosomes from existing DNA. c. gets a complete set of 46 chromosomes. d. None of the above Key words:

  23. Ch. 8 Exam Review _C__16. A typical human cell contains 46 chromosomes. After mitosis and cell division, each of the two new cells formed from the original cell a. gets 23 chromosomes. b. grows new chromosomes from existing DNA. c. gets a complete set of 46 chromosomes. d. None of the above Key words: 46 mitosis

  24. Ch. 8 Exam Review ____ 17. Refer to the illustration above. Which of the following correctly indicates the order in which these events occur? • “A,” “B,” “C,” “D” b. “C,” “B,” “A,” “D” c. “B,” “A,” “C,” “D” d. “A,” “C,” “B,” “D” ____ 18. Refer to the illustration above. During which stage do the centromeres divide? a. “A” c. “C” b. “B” d. “D”

  25. Ch. 8 Exam Review __B_ 17. Refer to the illustration above. Which of the following correctly indicates the order in which these events occur? • “A,” “B,” “C,” “D” b. “C,” “B,” “A,” “D” c. “B,” “A,” “C,” “D” d. “A,” “C,” “B,” “D” _A__ 18. Refer to the illustration above. During which stage do the centromeres divide? a. “A” c. “C” b. “B” d. “D”

  26. Ch. 8 Exam Review ____ 19. In plant cells, cytokinesis occurs when a. the chromosomes make exact copies of themselves. b. spindle fibers are formed. c. a new cell wall forms. d. osmotic pressure is too low. Cyto = Kine =

  27. Ch. 8 Exam Review _C__ 19. In plant cells, cytokinesis occurs when a. the chromosomes make exact copies of themselves. b. spindle fibers are formed. c. a new cell wall forms. d. osmotic pressure is too low. Cyto = cell Kine = moving

  28. Ch. 8 Exam Review ____ 20. Refer to the illustration above. Which of the cells will be a diploid cell at the completion of division? a. “A” c. Both b. “B” d. Neither ____ 21. Refer to the illustration above. Which of these cells is in the process of dividing to form gametes? a. “A” c. Both b. “B” d. Neither

  29. Ch. 8 Exam Review _A_ 20. Refer to the illustration above. Which of the cells will be a diploid cell at the completion of division? a. “A” c. Both b. “B” d. Neither _B__ 21. Refer to the illustration above. Which of these cells is in the process of dividing to form gametes? a. “A” c. Both b. “B” d. Neither

  30. Ch. 8 Exam Review ____ 22. When crossing-over takes place, chromosomes a. mutate in the first division. b. produce new genes. c. decrease in number. d. exchange corresponding segments of DNA.

  31. Ch. 8 Exam Review _D__ 22. When crossing-over takes place, chromosomes a. mutate in the first division. b. produce new genes. c. decrease in number. d. exchange corresponding segments of DNA.

  32. Ch. 8 Exam Review ____ 23. The exchange of segments of DNA between the members of a pair of chromosomes a. ensures that variation within a species never occurs. b. acts as a source of variation within a species. c. always produces genetic disorders. d. is called crossing.

  33. Ch. 8 Exam Review _B__ 23. The exchange of segments of DNA between the members of a pair of chromosomes a. ensures that variation within a species never occurs. b. acts as a source of variation within a species. c. always produces genetic disorders. d. is called crossing.

  34. Ch. 8 Exam Review 24. Following replication of its DNA, each chromosome contains two ____________________, which are attached to each other by a centromere. 25. Chromosomes that are not involved in sex determination are called ____________________. 26. A picture of a cell’s chromosomes is called a ____________________. 27. Collectively, the time spent in G1 + S + G2 is called ____________________. 28. The process called ____________________ guarantees that the number of chromosomes in gametes is half the number of chromosomes in body cells. 29. The cells resulting from meiosis in either males or females are called ____________________.

  35. Ch. 8 Exam Review 24. Following replication of its DNA, each chromosome contains two __CHROMATIDS____, which are attached to each other by a centromere. 25. Chromosomes that are not involved in sex determination are called __AUTOSOMES_____. 26. A picture of a cell’s chromosomes is called a ____KARYOTYPE_. 27. Collectively, the time spent in G1 + S + G2 is called ___INTERPHASE____. 28. The process called ___MEIOSIS___ guarantees that the number of chromosomes in gametes is half the number of chromosomes in body cells. 29. The cells resulting from meiosis in either males or females are called _____GAMETES____.

  36. Ch. 8 Exam Review • Briefly describe the five stages of the cell cycle. I P M A T

  37. Ch. 8 Exam Review • Briefly describe the five stages of the cell cycle. I = cell growth, time between mitosis, G1 >>S>>G2 P = chromosomes thicken, 1st step in mitosis/meiosis M = chromosomes line up along equator A = chromosomes sweep apart T = 2 cells begin to form

  38. Ch. 8 Exam Review

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