Test your basic knowledge |

SAT Subject Test: Biology

Subjects : sat, science, 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. The small granular body within the centrosome to which the spindle fibers attach






2. Semen






3. The phylum of sponges






4. The outermost surface of an organism






5. The basal branch of each spinal nerve; carries motor neurons






6. Plant tissue consisting of large thin-walled cells for storage






7. An organic molecule consisting of joined phosphate - 5-carbon sugar (deoxyribose or ribose) - and a purine or a pyrimidine (adenine - guanine - uracil - thymine or cytosine)






8. A cell in the retina that is sensitive to colors and is responsible for color vision






9. The intake of fluid droplets into a cell






10. An emulsifying agent secreted by the liver






11. An antigen in blood; can cause erythroblastosis fetalis when the mother is Rh- and the fetus is Rh+






12. The movement of particles from one place to another as a result of their random motion






13. The space between the mesodermal layers that forms the body cavity of some animal phyla






14. The area of medulla that regulates the rate of breathing






15. A specialized structure that leads to the digestive tract of a developing organism and provides it with food during early development






16. A space in the body






17. The anaerobic respiration of carbohydrates






18. A four-letter code made up of the DNA nitrogen bases A - T - G and C; each chromosome is made up of thousands of these bases






19. The part of the flower that produces pollen






20. A stage of embryonic development characterized by the differentiation of the cells into the ectoderm and endoderm germ layers and by the formation of the archenteron






21. The ability of certain animals to regrow missing body parts






22. Blood vessels located between ascending and descending aortas that deliver blood to most of the upper body






23. A stalklike or elongated body part - usually pointed at one end






24. The womb in which the fetus develops






25. The place of attachment of the mitotic fiber to the chromosome






26. An endocrine gland located in the neck that produces thyroxin






27. An invertebrate animal phylum in which animals possess a single alimentary opening and tentacles with stinging cells






28. An air sac in the lung; the site of respiratory exchange - involving diffusion of oxygen and carbon dioxide between the air in the alveolus and the blood in the capillaries






29. A process of photosynthesis in which water is split into H+ and OH-; the hydrogen ion is then joined to NADP






30. A chemical messenger that is secreted by one part of the body and carried by the blood to affect another part of the body - usually a muscle or gland






31. A complex carrier mechanism located on the inside of the inner mitochondrial membrane of the cell; releases energy and is used to form ATP






32. Cycle in photosynthesis that reduces fixed carbon to carbohydrates through the addition of electrons ("dark cycle")






33. The orderly process by which one biotic community replaces another until a climax community is established






34. A hoofed animal






35. The stable - biotic part of the ecosystem in which populations exist in balance with each other and with the environment






36. A blood clot that is formed within a blood vessel






37. A hormone of the thyroid that regulates basal metabolism






38. The reproductive organ that produces sex cells






39. A constituent of the plasma of the blood of vertebrates; it is converted to thrombin by thrombokinase in the presence of calcium ions - thus contributing to the clotting of blood






40. A cell in the retina that is sensitive to weak light






41. The ways in which organisms regulate their supply of water






42. A ring-shaped muscle that is capable of closing a tubular opening by constriction






43. An association of homologous chromosomes during the first meiotic division






44. The ourter part of the adrenal gland that secretes many hormones - including cortisone and aldosterone






45. A white or colorless - amorphous - horny substance that forms part of the outer integument of insects - crustaceans and some other invertebrates; it also occurs in certain fungi






46. The innermost embryonic germ layer that gives rise to the lining of the alimentary canal and to the digestive and respiratory organs






47. Fluid in the eye - found between the cornea and the lens






48. The dorsal part of the hip girdle






49. Bacteria that are rod shaped






50. The recycling of carbon from decaying organisms for use in future generations