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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. Partially digested food in the stomach






2. 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)






3. The extraembryonic membrane in birds - reptiles and mammals that surrounds the embryo - forming an amniotic sac






4. Adenosine diphosphate (ADP) and adenosine triphosphate (ATP) - which are energy storage molecules






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






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. A pair of chromosome pairs present during the first metaphase of meiosis






8. A plant that lives on another plant mensalistically






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






10. A chemical action that releases energy from glucose to form ATP






11. Blood protein that is transformed to fibrin upon clotting






12. A plastid containing chlorophyll






13. Any chromosome that is not a sex chromosome






14. The individual differences of form among the members of a species






15. The sensory branch of each spinal nerve






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






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






18. The removal of an amino group from an organism - particularly from an amino acid






19. Random evolutionary changes in the genetic makeup of a population






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






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






22. Functional urinary tubules responsible for excretion in the kidney of vertebrates






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






24. A cell that divides to form two secondary spermatocytes






25. The liquid part of blood






26. The diffusion of water through a semipermeable membrane - from an area of greater concentration to an area of lesser concentration






27. An organism that must get its inorganic and organic raw materials from the environment; a consumer






28. A dark-staining small body within the nucleus; composed of RNA






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






30. A disease-causing organism






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






32. Occurs when different traits are inherited together more often than they would have been by chance along; it is assumed that these traits are linked on the same chromosome






33. The part of the flower that produces pollen






34. The instance of polymorphism in which there is a difference of form between two members of a species - as between males and females






35. The enzyme released from the blood platelets in vertebrates during clotting






36. The cavity between the lungs and the wall of the chest






37. 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






38. 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






39. A fat or oil






40. The male gonads that produce sperm and male hormones






41. A membrane that envelopes the nucleus and separates it from the cytoplasm; present in eukaryotes






42. A network or mesh of fibrils - fibers or filaments






43. Organelles that serve as specialized containers for metabolic reactions






44. The creation of certain strains of specific traits through control of breeding






45. Cytoplasmic bodies within a plant cell that are often pigmented






46. Organism that consumes food from outside itself instead of producing it






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






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






49. The ability of an organism to contribute its alleles and therefore is phenotypic traits to future generations






50. The transformation of an immature animal into an adult; a change in the form of an organ or structure







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