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5 Written questions

5 Matching questions

  1. Somatic Cells
  2. G₁ Stage (presynthetic gap)
  3. Binary Fission
  4. G₂ Stage (postsynthetic gap)
  5. Pathway of Sperm
  1. a - 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. b - cell continues to grow in size
    - assembly of new organelles and other cell structures continues
  3. c - a simple form of asexual reproduction in prokaryotes
    - circular chromosome replicates
    - a new plasma membrane and cell wall grow inward along the midline of the cell, dividing it into two
    - each daughter cell contains a duplicate of the parent chromosome
  4. d SEVEN UP:
    Seminiferous tubules
    Epididymus
    Vas deferens
    Ejaculatory duct
    (Nothing)
    Urethra
    Penis
  5. e - 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

5 Multiple choice questions

  1. - centrioles migrate to opposite poles
    - spindle apparatus forms
  2. - the longest part of the cell cycle
    - a cell normally spends at least 90% of the cycle in interphase
  3. - prokaryotes' way of of cell division
    - a type of asexual reproduction
    - splits into two equal halves, each daughter cell receives a complete copy of the original chromosome
  4. where sperm acquire motility and stored here till ejaculation
  5. - multilayered sac of cells that contains, nourishes and protects and immature ovum
    - follicle cells produce estrogen

5 True/False questions

  1. Spermatogenesis Process- spermatogonia (diploid) differentiate into primary spermatocytes (diploid)
    - primary spermatocytes undergo the first meiotic division and yield two secondary spermatocytes (haploid)
    - secondary spermatocytes undergo second meiotic division and yield four spermatids (haploid)
    - spermatogonia (2N) --> 1° spermatocytes (2N) --> meiosis I --> 2° spermatocytes (N) --> spermatids (N) --> spermatozoa (N)

          

  2. Metaphase I- chromosomes align

          

  3. Prophase- spindle apparatus disappears
    - new nuclear membrane forms around each set of chromosomes
    - nucleoli reappears
    - chromosomes uncoil
    - cytokinesis occurs

          

  4. Female Reproductive Anatomy- 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

          

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