Bio Chap 9

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ndumas2
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147314
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Bio Chap 9
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2012-04-14 00:09:55
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Bio Chapter LSU
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Questions from Chapter 9
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  1. In what part of meiosis does chromatid separation occur?
    Anaphase, Meiosis II
  2. What is the difference between Mitosis and Meiosis?
    Mitosis produces clones; Meiosis produces variable offspring
  3. In S phase of the cell cycle, what is going on?
    Cells prepare for cell division, Cells are replicating
  4. In prophase,
    • Chromosomes condense and the nucleolus begins to disappear
    • A spindle forms and captures the chromosomes
  5. In which phase of meiosis does separation of homologous chromosomes occur?
    Anaphase I
  6. In _________________, homologous chromosomes separate from each other and in _________________ sister chromatids separate.
    Meiosis I, Meiosis II
  7. If you start with one cell, mitosis produces ____ cells while meiosis produces ____ cells.
    2, 4
  8. A cell containing a diploid number of 36 chromosomes would contain _______ chromosomes in anaphase I
    36
  9. A parent cell containing 12 chromosomes undergoing mitosis will produce daughter cells containing ____ chromosomes
    12
  10. Interphase consists of
    G1, S, G2
  11. A homologous pair of chromosomes are:
    2 chromosomes containing the same genes
  12. At the very end of oogeneis,
    1 ovum and 3 polar bodies are produced
  13. Spermatogenesis closely resembles
    Meiosis I and II
  14. In mitosis, _________________ cells are produced and each cell is ___________ in comparison to the parent
    2 diploid, identical
  15. Recombination occurs
    Prophase of Meiosis I
  16. True/False: A clone means the same as being diploid
    False
  17. Why is it important for organisms to have genetic variability?
    To survive in a changing environment
  18. What causes variation in a population?
    Mutations, Crossing over, independent assortment
  19. What are the two important characteristics of stem cells?
    Self renewal and ability to differentiate into different types of cells
  20. Humans have 23 pairs of chromosomes. How would you figure out the number of all the possible gamete combinations if independent assortment occurred?
    2^23
  21. What does a nucleotide consist of?
    Phosphate group, Sugar, Base
  22. True/False: DNA is usually single stranded while RNA is usually double stranded
    False
  23. Which of the following statements are false?

    A. Adenine double bonds to Thymine
    B. Guanine triple bonds to Cytosine
    C. Cytosine double bonds to Adenine
    D. More than one of the above is incorrect
    Cytosine double bonds to Adenine
  24. Which of the following can reproduce asexually?
    A. Fungi
    B. Bacteria
    C. Some eukaryotes
    D. Two of the above
    E. All of the above
    All of the above
  25. Which of the following are true about eukaryotes?
    A.Eukaryotes have more DNA than prokaryotes
    B. Eukaryotes do not have a membrane bound nucleus, whereas prokaryotes do
    C. Eukaryotes never have multiple chromosomes
    D. More than one of the above
    More than one of the above
  26. What is the correct order of making a chromosome?
    1. DNA wraps around histone proteins forming nucleosomes
    2. DNA is a double helix
    3. Fully folded chromosome
    4. Loops attached to a protein scaffold
    5. Coiled DNA
    2, 1, 5, 4, 3
  27. Changes in DNA are a result of
    A. Photosynthesis
    B. DNA replication
    C. Mutations
    D. Crossing over
    E. C and D are correct
    C and D are correct
  28. How many chromosomes does a human have and how many are autosomes?
    23 pairs of chromosomes with 22 being autosomes
  29. If you have 36 chromosomes, how many would you have at the end of meiosis?
    18
  30. True/False: In telophase of cell division, cells will have fully divided
    False
  31. If you have 100 chromosomes, how many would you have at the end of mitosis?
    100
  32. What electron Donors are made in the Krebs cycle
    A: NADH
    B: FADH2
    C: NAD+
    D: A and B
    A and B
  33. Which step produces the most ATP?
    Electron Transport Chain
  34. What are the products of glycolysis?
    2 Pyruvate
  35. Overall, cellular respiration makes ____ ATP
    34 to 36 ATP
  36. Where does glycolysis occur?
    Cytoplasm
  37. For PROKARYOTES, where does the electron transport chain occur?
    Cellular membrane
  38. Which of the following is not a type of fermentation?
    A: Basic
    B: Acidic
    C:Alcoholic
    Basic
  39. The process by which energy is first used to generate a gradient of H+, and then captured in the bonds of ATP as H+ flows down its gradient is called
    Chemiosmosis
  40. The following reaction is an example of a what?
    Na -----> Na+ + e-
    Oxidation reaction
  41. What is the purpose of fermentation?
    Oxidize NADH to NAD+

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