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5 Written questions

5 Matching questions

  1. Metaphase II
  2. Cytokinesis
  3. Primary Oocyte
  4. Male Reproductive Anatomy
  5. Budding
  1. a - chromosomes line up along the equatorial plane
    - centromeres divide
    - chromosomes separate into pairs of sister chromatids
  2. b - testes contain two functional components: seminiferous tubules and interstitial cells (cells of Leydig)
    - sperm are produced in seminiferous tubules, nourished by Sertoli cells
    - interstitial cells secrete testosterone and anderogens
    - testes have to be 2-4°C lower than body temperature
  3. c - happens at the end of telophase
    - cytoplasm divides into two daughter cells
    - in animal cells, a cleavage furrow forms, cell membrane indents along the equator of the cell and cell split
  4. d - replication of the nucleus followed by unequal cytokinesis
    - the cell membrane pinches inward to form a new cell that is smaller in size but genetically identical to the parent cell
    - can grow to an adult size
    - new cell may separate immediately from the parent or remain attached to it
    - occurs in hydra and yeast
  5. e - immature ova
    - diploid cells that form by mitosis in the ovary
    - at birth, all of the primary oocyte that a female will produce during her lifetime are already in her ovaries

5 Multiple choice questions

  1. - multilayered sac of cells that contains, nourishes and protects and immature ovum
    - follicle cells produce estrogen
  2. - triggered by acrosomal reaction
    - calcium ions released into the cytoplasm, initates a series of reaction to form the fertilization membrane
    - calcium ion also stimulates increase in ovum's metabolic rate
    - this is followed by fusion of the sperm nucleus with ovum nucleus to form a diploid zygote
  3. - intense biochemical activity and growth
    - cell doubles in size and new organelles are produced
    - passing "restriction point", where a cell is committed to continue through the rest of the cell cycle and divide
    - some cells like skeletal muscle cells and nerve cells never pass this point, and enter a nondividng phase sometimes referred to as G₀
    - 2N number of chromosomes
  4. - sister chromatids are pulled to opposite poles by the spindle fibers
  5. - cell continues to grow in size
    - assembly of new organelles and other cell structures continues

5 True/False questions

  1. Reproduction- a process by which an organism perpetuates itself and its species
    - divided into: cell division, asexual reproduction and sexual reproduction


  2. Anaphase- sister chromatids separate
    - telomeres are the last part of the chromatids to separate


  3. Pathway of SpermSEVEN UP:
    Seminiferous tubules
    Vas deferens
    Ejaculatory duct


  4. Parthenogenesis- "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


  5. Vulvachromosome consisting of two sister chromatids