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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. A class of arthropods that includes scorpions - spiders - mites and ticks






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






4. The elimination of metabolic waster matter






5. The part of the flower that produces pollen






6. The study of organisms in relation to their environment






7. Membranous organelles involved in the storage and modification of secretory products






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






9. The part of the body of an animal that is between the neck or head and the abdomen






10. An organ that stores urine temporarily before it is excreted






11. Pertains to a gene or characteristic that is masked when a dominant allele is present






12. 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






13. A duct that carries urine from the kidneys to the bladder






14. An enzyme that acts upon maltose and converts it into glucose






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






16. A wall composed of cellulose that is external to the cell membrane in plants; it is primarily involved in support and in the maintenance of proper internal pressure






17. The thin-walled anterior chamber of the heart (also called the auricle)






18. Changes in genes that are inherited






19. A cell resulting from the fusion of gametes






20. An organ that is not functional in an organism - but was functional at some period in its evolution






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






22. A flesh-eating animal; a holotrophic animal that subsists on other animals or parts of animals






23. The cellular layer that covers external and internal surfaces






24. The outermost - extra-embryonic membrane of reptiles and birds






25. The organelle that provides mechanical support and carries out motility functions for the cell






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






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






28. An emulsifying agent secreted by the liver






29. Describes a fluid that has a lower osmotic pressure than a fluid it is compared to






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






31. The womb in which the fetus develops






32. An opening in the eye whose size is regulated by the iris






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






34. xylem that is no longer being used






35. 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






36. A structure that extends from the trunk of an organism and is capable of active movements






37. A large class of arthropods - including crabs and lobsters






38. The hind portion of the forebrain of vertebrates






39. The junction or gap between the axon terminal of one neuron and the dendrites of another neuron






40. A stage of embryonic development in which the embryo consists of a hollow ball of cells






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






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






43. A thin - transparent - eyelid-like membrane that opens and closes laterally across the cornea of many vertebrates (the third eyelid)






44. An organ that stores bile






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






46. A structure of the eye that focuses images on the retina by changing its convexity






47. Cytoplasmic organelles that serve as sites of respiration; a rod-shaped body in the cytoplasm known to be the center of cellular respiration






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






49. The most anterior portion of the small intestine of vertebrates - adjacent to the stomach; the continuation of the stomach into which the bile duct and pancreatic duct empty






50. A tube connecting the ovaries and the uterus