NAME

Question types


Start with


Question limit

of 67 available terms

Advertisement Upgrade to remove ads
Print test

5 Written questions

5 Matching questions

  1. Spermatozoa
  2. Parthenogenesis
  3. Primary Oocyte
  4. Interphase
  5. Prophase
  1. a - development of an unfertilized egg into an adult organism
    - occurs naturally in certain lower organisms (bees and ants, some salamander)
    - eggs of some organisms can be induced to develop parthenogenetically (not done naturally)
    - since the organism develops from a haploid cell, all of its cells will be haploid
  2. b - chromosomes condense
    - centriole pairs separate and move toward opposite poles of cell
    - spindle apparatus form
    - nuclear membrane dissolves
    - kinetochores, attached kinetochore fibers, appear at the chromosome centromere
  3. c - spermatids after a series of changes, becomes a mature sperm
    - mature sperm is an elongated cell with a head, neck, body and tail
    - head consists almost entirely of the nucleus
    - tail (flagellum) propels the sperm
    - mitochondria in the neck and body provide energy for locomotion
  4. d - 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. e - the longest part of the cell cycle
    - a cell normally spends at least 90% of the cycle in interphase

5 Multiple choice questions

  1. chromosome consisting of two sister chromatids
  2. - 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)
  3. - results when two ova are released in one ovarian cycle
    - fertilized by two different sperm
    - two embryos implant in the uterine wall individually
    - each develops its own placenta, amnion and chorion
    - share characteristics in the level of siblings
  4. - homologous chromosomes come together and intertwine
    - at this stage, chromosome consists of two sister chromatids
    - where recombination and crossing over happens, responsible for increased genetic diversity
  5. - once a month, an immature ovum is released from the ovary into the abdominal cavity and drawn into the nearby fallopian tube
    - inner surface of the fallopian tube is lined with cilia that move the ovum into and along the tube and toward the uterus
    - mammalian female's reproductive and excretory systems are distinct from one another (urethra and vagina aren't connected)

5 True/False questions

  1. Cortical Reaction- 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

          

  2. G₁ Stage (presynthetic gap)- 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

          

  3. Homologous Chromosomeschromosomes that code for the same trait, one inherited from each parent

          

  4. 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

          

  5. Anaphase II- sister chromatids are pulled to opposite poles by the spindle fibers