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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. Uncoiled DNA






2. Centriole pairs are now at opposite poles of the cell






3. (In Prophase I) process where homologous chromosomes (chromosomes that code for the same traits - one inherited form each parent) come together and intertwine






4. Common passageway for both the reproductive and exretory systems






5. (In Prophase I) each chromosome consists of two sister chromatids - each synaptic pair of homologous chromosomes containing four chromatids






6. Production of offspring without fertilization -form new organisms by a single parent cell -offspring are genetic carbon copies of their parent cells -genetically identical to the parent cells (except mutations) -ex: fission - budding - regeneration -






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






8. Specialized organs where gametes are produced






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






10. 1) G1: Initiates interphase. is described as the active growth phase and can vary in length. the cell increases in size and synthesizes proteins. the length of the G1 phase determines the length of the entire cell cycle 2) S: the period of DNA synthe






11. Triggered by acrosomal reaction causing calcium ions to be released into the cytoplasm






12. (In Prophase I) chromatids of homologous chromosomes break at corresponding points and exchange equivalent pieces of DNA -occurs between homologous chromosomes and not between sister chromatids of the same chromosomes (the latter are identical - so c






13. A means of reproduction






14. After ovulation - LH induces the ruptured follicle to develop into the corpus luteum






15. Produces monoploid spores that develop into pollen grains






16. 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






17. 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






18. 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






19. Have one cotyledon






20. Specialized sex cells






21. The production of female gametes - occurs in the ovaries






22. Produced when one diploid primary female sex cell undergoes meiosis in the ovaries






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






24. Can be fertilized during the 12-24hr after ovulation -occurs in the lateral - widest portion of the fallopian tube -sperm must travel through the vaginal canal - cervix - uterus - and into the fallopian tubes to reach the ovum






25. Spore formation - vegetative propagation - and Artificial Vegetative Propagation






26. Tail of sperm -propels the sperm - whereas mitochondria in the neck and body provide energy the locomotion






27. Located on scrotum -site for testosterone






28. Released from the ovary into the abdominal cavity and drawn into the nearby oviduct






29. Found in the tips of roots and stems where growth in length occurs






30. Replication of the nucleus followed by unequal cytokinesis -membrane pinches inward to forma new cell that is smaller in size but genetically identical to the parent cell






31. Releases spores form the undersides of its leaves that develop into small heart-shaped gametophytes






32. Split to form several bulbs






33. Bulbs - tubers - runners - rhizomes






34. AKA lateral meristem -located between the xylem and phloem






35. Part of embryo that develops into the lower and root






36. Egg






37. Inner layer of oocyte cell membrane






38. Consists almost entirely of the nucleus - which contains the paternal genome






39. Produces two intermediate daughter cells with N chromosomes with sister chromatids






40. Surrounded by two layers of cells






41. External pouch that maintains the testes' temperature at 2C-4C lower than body tmperature - a condition essential for sperm survival






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






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






44. Eggs






45. Large cell containing most of the cytoplasm - RNA - organelles - and nutrients needed by a developing embryo






46. Produced when each meiotic division -rapidly degenerate






47. Diploid cells that undergo meiosis to produce four haploid sperm of equal size






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






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






50. 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







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