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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. Requiring free oxygen from the atmosphere for normal activity and respiration






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






3. The fluid that remains after fibrinogen is removed from the blood plasma of vertebrates






4. The type of mating that occurs when an organism selects a mating partner that resembles itself






5. Blood protein that is transformed to fibrin upon clotting






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






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






8. A microscopic opening located in the epidermis of a leaf and formed by a pair of guard cells






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






10. The part of the hindbrain located in the brain stem






11. The portion of seed plant embryo above the cotyledon






12. A terrestrial habitat zone that is characterized by large tracts of coniferous forests - long and cold winters - and short summers






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






14. An organism that possesses one or more whiplike appendages called flagella






15. Bacteria that are rod shaped






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






17. An animal phylum in which all members have a notochord - dorsal nerve cord and pharyngeal gill slits at some embryonic stage; includes the Cephalochordata and the Vertebrates






18. The dorsal part of the hip girdle






19. A flexible - supportive rod running longitudinally through the dorsum ventral to the nerve cord; found in lower chordates and in the embryos of vertebrates






20. A decimal fraction that represents the presence of an allele for all members of a population that have a particular gene locus






21. Changes in genes that are inherited






22. A group of populations that can interbreed






23. The female gamete; it is nonmotile - large in comparison to male gametes - and stores nutrients






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






25. The reproductive organ that produces sex cells






26. A waxy protective layer secreted by the outer surface of plants - insects - etcetera






27. A sensory hair structure in the utriculus and the sacculus of the inner ear; orients the head with respect to gravity






28. A fatty sheath surrounding the axon of a neuron that aids in stimulus transmission; it is secreted by the Schwann cells






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






30. The sensory organ of the inner ear of mammals; it is coiled and contains the organ of corti






31. A blood vessel that carries blood back to the heart from the capillaries






32. A muscular valve regulating the flow of food from the stomach to the small intestine






33. The phylum of sponges






34. The microspore of a seed plant






35. A network - particularly of nerve or blood vessels






36. The intake of food from the environment into the alimentary canal






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






38. Describes a fluid that has the same osmotic pressure as a fluid it is compared to






39. A stomach enzyme that partially digests proteins






40. Degree of penetrability - as in membranes that allow given substances to pass through; the ability to penetrate






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






42. A process of cell division whereby each daughter cell receives only one set of chromosomes; the formation of gametes






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






44. The outermost surface of an organism






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






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






47. An enzyme that acts upon sucrose






48. Living - as in living organisms in the environment






49. The cellular layer that covers external and internal surfaces






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