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5 Written questions

5 Matching questions

  1. Anaphase
  2. Pathway of Sperm
  3. Prophase II
  4. Fertilization
  5. Metaphase II
  1. a - centrioles migrate to opposite poles
    - spindle apparatus forms
  2. b - chromosomes line up along the equatorial plane
    - centromeres divide
    - chromosomes separate into pairs of sister chromatids
  3. c - sister chromatids separate
    - telomeres are the last part of the chromatids to separate
  4. d SEVEN UP:
    Seminiferous tubules
    Epididymus
    Vas deferens
    Ejaculatory duct
    (Nothing)
    Urethra
    Penis
  5. e - happened 12-24 hours after ovulation
    - occurs in the lateral, widest portion of the fallopian tube
    - sperm travels through vaginal canal, cervix, uterus, and into the fallopian tubes to reach the ovum
    - sperm penetrates corona radiata, then zona pellucida, contact with ovum cell membrane, become acrosomal process, fuse sperm with ovum
    - sperm nucleus enters ovum's cytoplasm and ovum completes meiosis II

5 Multiple choice questions

  1. - or called autosomal cells
    - everything but the gamete
    - contain diploid number of chromosomes characteristic of its species (2N)
    - N is the number of chromosomes found in haploid cell (gamete)
    - in human, 2N = 46 and N = 23
  2. - dependent on these cytoplasmic organelles
    - centrioles: found in pairs, cylindrical organelles
    - centrosome: an area outside the interphase nucleus
    - spindle fibers: composed of microtubules, appears near each pair of centrioles, radiate outward.
    - asters: spidle fibers in radiating structure
    - spindle apparatus: asters extending toward the center of the nucleus, shortens to move chromosomes toward
    opposite poles of the cell during the later stages of mitosis
  3. - "sperm production"
    - occurs in seminiferous tubules
    - after a male reaches sexual maturity, about 3 million primary spermatocytes begin spermatogenesis per day
    - maturation takes about 65-75 days
  4. - the regrowth of a lost or injured body part
    - replacement of cells occurs by mitosis
    - ex: hydra and starfish
    - in higher animals, regeneration is usually limited to the healing of tissues
    - some internal organs (liver) can regenerate considerably as long as part of the organ remains viable
  5. - multilayered sac of cells that contains, nourishes and protects and immature ovum
    - follicle cells produce estrogen

5 True/False questions

  1. S Stage (synthesis)- mitosis: division and distribution of the cell's DNA to its two daughter cells such that each cell receives a complete copy of the original genome
    - cytokinesis: division of cytoplasm that follows
    - happens on somatic cells only
    - 2N --> 2N (ends up with two diploid cells)

          

  2. Zona Pellucidahomologous chromosomes come together and intertwine

          

  3. Meiosis II- doesn't occur until fertilization
    - triggered when zona pellucida and corona radiata are penetrated by a sperm cell
    - fertilization yields two haploid cells, a mature ovum and another polar body
    - the mature ovum is a large cell containing a lot of cytoplasm, RNA, organelles and nutrients needed by a developing embryo

          

  4. Gonads- male: testes
    - female: ovaries

          

  5. Interphase- chromosomes align