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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. An organ centrally involved in the human digestive system






2. Passively floating or drifting flora and fauna of a body of water; consists mainly of microscopic organisms






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






4. The breeding of an organism with a homozygous recessive in order to determine whether an organism is homozygous dominant or heterozygous dominant for a given trait






5. A tube one cell thick that carries blood from artery to vein; the site of material exchange between the blood and tissues of the body






6. 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






7. An "emergency" hormone stimulated by anger or fear; increase blood pressure and heart rate in order to supply the emergency needs of the muscles






8. A relationship in which one organism benefits at the expense of another






9. The functional role and position of an organism in an ecosystem; embodies every aspect of the organism's existence






10. Any chromosome that is not a sex chromosome






11. The external opening of the trachea in insects






12. One or two or more types of genes - each representing a particular trait; many alleles exist for a specific gene locus






13. A space in the body






14. The veins that carry blood from the digestive organs to the liver






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






16. A portion of the CNS consisting of cytons (cell bodies) - their dendrites and synaptic connections






17. The removal of hydrogen or electrons from a compound or addition of oxygen; half of a redox (oxidation or reduction) process






18. Laws of classical genetics established through Mendel's experiments with peas






19. A space in the cytoplasm of a cell that contains fluid






20. Occurs when certain traits are determined by genes on sex chromosomes






21. The inner layer of an organ surrounded by the cortex






22. The tenth cranial nerve that innervates digestive organs - heart and other areas






23. Protective immunity to a disease in which the individual produces antibodies as a result of previous exposure to the antigen






24. A type of virus that can destroy bacteria by infecting - parasitizing and eventually killing them






25. A stomach enzyme that partially digests proteins






26. An organelle in the cytoplasm that contains RNA; serves as the site of protein synthesis






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






28. A cell that divides to form the polar body and the secondary oocyte






29. A hormone of the thyroid that regulates basal metabolism






30. Describes organisms that are cooperative in action - such as hormones or other growth factors that reinforce each other's activity






31. Refers to protective covering






32. The thin - bent part of the renal tubule that is the site of the counter-current flow and the sodium gradient






33. A gland composed of two parts - anterior and posterior - each with its own secretions; called the "master gland" because its hormones stimulate secretions by other glands






34. Pertaining to a type of gland that releases its secretion through a duct






35. The largest portion of the human brain; it is believed to be the center of intelligence - conscious thought and sensation






36. A behavioral or biological change that enables an organism to adjust to its environment






37. A flowering plant with simple dry fruit - characterized by nodes on their roots that contain nitrogen-fixing bacteria






38. A network of membrane-enclosed spaces connected with the nuclear membrane; transports materials through the cell; can be soft or rough






39. 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)






40. The part of the flower that produces pollen






41. A mitotic stage in which nuclei reform and nuclear membrane reappears






42. An organic cofactor required for enzyme activity






43. Anaerobic respiration the yields 2 molecules of ATP - lactic acid - ethyl alcohol and carbon dioxide or some similar compound via the glycolytic pathway






44. An organic catalyst and protein






45. The sensory branch of each spinal nerve






46. The study of the evolutionary descent and interrelations of groups of organisms






47. A ductless gland that secretes hormones directly into the bloodstream






48. A sensory organ capable of detecting light






49. Usually referred to as ACTH and secreted by the anterior lobe of the pituitary gland; stimulates the adrenal cortex to produce its characteristic hormones






50. A sugar composed of two combined monosaccharides