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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 organism that is heterozygous for two different traits






2. One of a class of organic compounds that contains a molecular skeleton of four fused rings of carbon






3. A structure in animal cells containing centrioles from which the spindle fibers develop






4. The association of physical - visceral response with an environmental stimulus with which it is not naturally associated; a learned response






5. 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)






6. A ductless gland in upper chest region concerned with immunity and the maturation of lymphocytes






7. Movement of amoeba






8. A transmitter substance released from the axons of nerve cells at the synapse






9. A period in the development of animals between the embryo and adult stages; starts at hatching and ends in metamorphasis






10. The inner portion of the cytoplasm of a cell or the portion that surrounds the nucleus






11. A multidirectional sensory system of lower animals such as the hydra - consisting of nerve fibers spread throughout the ectoderm






12. The central tissue of a stem - used for food storage






13. A bony or chitinous case or shield covering the back or part of the back of an animal (shell of a crab)






14. An organ centrally involved in the human digestive system






15. The physical appearance or makeup of an individual - as opposed to its genetic makeup






16. A plant growth hormone






17. The part of the nervous system that regulates the involuntary muscles - such as the walls of the alimentary canal; includes the parasympathetic and sympathetic nervous systems






18. There are two kinds of sex chromosomes - X and Y; XX signifies a female and XY signifies a male






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






20. The smallest particle that is capable of carrying out photosynthesis; the functional unit of a chloroplast






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






22. An organic nutrient required by organisms in small amounts to aid in proper metabolic processes






23. A flowering plant; a plant of the class Angiospermae that produces seeds enclosed in an ovary and is characterized by the possession of fruits and flowers






24. A metabolic stage between mitoses in which genetic material is reproduced






25. A process by which the cytoplasm and the organelles of the cell divide; the final stage of mitosis






26. The process of breaking down large organic molecules into smaller ones






27. The female gonad in animals; the base of the pistil in plants






28. The ability to respond to a stimulus






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






30. The enzyme that acts upon lactose






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






32. An abbreviation of ribonucleic acid - a nucleic acid in which the sugar is ribose; a product of DNA transcription that serves to control certain cell activities






33. 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






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






35. The failure of some homologous pairs of chromosomes to separate following meiotic synapsis






36. An enzyme that acts upon sucrose






37. A resistance to disease developed through the immune system






38. The recycling of nitrogen from decaying organism for use in future generations






39. 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






40. A thyroid deficiency that results in stunted growth and feeblemindedness






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






42. An organic cofactor required for enzyme activity






43. A symbol that denotes the relative concentration of hydrogen ions in a solution






44. A reproductive cell that is capable of developing directly into an adult






45. A substance that prevents appreciable changes in pH in solutions to which small quantities of acids or bases are added






46. The orientation of cells or organisms in relation to chemical stimuli; the growth or movement response of organisms to chemical stimuli






47. An enzyme from the pancreas that digests proteins in the small intestine






48. Living or active in the absence of free oxygen; pertaining to respiration that is independent of oxygen






49. A mucus-secreting membrane






50. A substance that participates in the clotting of blood in vertebrates