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PCAT Biology Reproduction

Subjects : pcat, biology
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Produced in developing placenta if fertilization occurs - maintaining the corpus luteum and - thus - the supply of estrogen and progesterone that maintains the uterus - until the placenta takes over production of these hormones






2. Inner layer of oocyte cell membrane






3. Chromosomes condense - and the centriole pairs (in animals) separate and move towards the opposite poles of the cell. the spindle apparatus forms between them - and the nuclear membrane dissolves - allowing the spindle fibers to interact with the chr






4. The production of female gametes -occurs in the ovarian follicles






5. Outer layer of oocyte cell membrane






6. Egg






7. AKA ovanan or fallopian tube -opens into the upper end of the uterus






8. Production of functional sex cells by adult organisms -fertilization forms a zygote -development of the zygote into another adult - completing the cycle






9. Union of gametes






10. Occurs in vertebrates that reproduce in water (fish and amphibians) -female lays eggs in water and male deposits sperm in the vicinity -lack of direct passage of sperm from male to female reduces chances of fertilization considerably






11. Passes through the penis and opens to the outside at its tip






12. Found in the abdominal cavity - below the digestive system -consist of thousands of follicles






13. Cell undergoes a period of growth and replication of genetic material before the initiation of mitosis -cell spends at least 90% of life in interphase -each chromosome is replicated so that during division - a complete copy of the genome can be distr






14. The process by which a cell doubles its organelles and cytoplasm - replicates its DNA - and then divides into two






15. Fibers of the spindle apparatus attach to each chromatid at the centromere to align the chromosomes at the center of the cell (equator)






16. Ex: estrogens and progesterone -synthesized by ovaries






17. Result when a single zygote splits into two embryos






18. Formed due to cortical reaction -hard layer that surrounds the ovum cell membrane and prevents multiple fertilizations -Followed by the fusion of sperm nucleus and form a diploid zygote






19. 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






20. Comlex process involving the formation and fertilization of gametes and regulation of these processes by bot parents






21. Two haploid cells yielded from meiotic division of primary spermatocytes






22. Sporophyte generation is the dominant - familiar form






23. Plants exhibit alternation of generation in which a diploid generation is succeeded by a haploid generation -diploid saprophyte generation produces haploid spores - which develop into the haploid saprophyte generation






24. Split to form several bulbs






25. Contains elongated cell with head - tail - neck - and body






26. Underground stems with bubs - like the eyes of potatoes - that can develop into adult plants






27. Muscular chamber which is the site of fetal development






28. Daughter cells of unequal size produced from one primary oocyte per month completes meiosis I -expelled from the follicle during ovulation






29. Thin and stalk like with a terminal sac called the anther






30. Near the end of telophase - the cytoplasm divides into two daughter cells - each wit a complete nucleus and its own set of organelles -In animal cells - a cleavage furrow forms - and the cell membrane indents along the equator of the cell and finally






31. Caplike structure - derived from the Golgi apparatus - develops over the anterior half of the head -contains enzymes needed to penetrate the tough outer covering of the ovum






32. Sperm production -occurs in the seminiferous tubules






33. (In Anaphase I) homologous pairs separate and are pulled to opposite poles of the cell -accounts for a fundamental Mendelian Law -each chromosome of paternal origin separates (or disjoins) from its homologue of maternal origin - and either chromosome






34. Result when two ova are released in one ovarian cycle and are fertilized by two different sperm






35. Immature ova -all that a female will produce during her lifetime are already in her ovaries at birth






36. Chromatin condenses into chromosomes - the spindle apparatus forms - and the nucleoli and nuclear membrane disappear






37. Method of growth - development - and replacement of worn-out cells






38. Very similar to mitosis - except that meiosis II is not preceded by chromosomal replication -chromosomes align at the equator - separate and move to opposite poles - and are surrounded by a reformed nuclear membrane -new cells have the haploid number






39. Eggs






40. The spindle apparatus disappears. A nuclear membrane forms around each set of newly formed chromosomes. Thus - each nucleus contains the same number of chromosomes (the diploid number 2n) as the original or parent nucleus. The chromosomes uncoil - re






41. Regulates secondary male sex characteristics including facial and pubic hair and voice changes






42. Four haploid cells produced from the second meiotic division after secondary spermatocytes






43. Located on scrotum -site for testosterone






44. Causes the glands of the endometrium to mature and produce secretions that prepare it for the implantation of an embryo -essential for the maintenance of the endometrium






45. Plant cells lack centrioles -spindle apparatus is synthesized by mcrotubule organizing centers that are not visible -cytokinesis in animal cells proceeds through production of a cleavage furrow -Plant cells are rigid and can't form cleavage furrows -






46. Surrounded by two layers of cells






47. Cut piece of stem can develop new roots in water or moist gorund - which can be used to accelerate root formation -layering: stems of certain plants - will take root when bent to the gorund and covered with soil -stem of one plant (scion) can be atta






48. Central region where - after replication - the chromosomes consist of two identical sister chromatids held together in interphase






49. AKA sperm production -occurs in the seminiferous tubules






50. Part of embry that are seed leaves