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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. A kind of microorganism that is between a virus and a bacterium; parasitic within the cells of insects and ticks






2. A group of populations that can interbreed






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






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






5. A network of capillaries in the Bowman's capsules of the kidney






6. A stage of mitosis; chromosomes line up at the equator of the cell






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






8. A hormone that ripens fruit and induces aging






9. An abbreviation of nicotinamide-adenine-dinucleotide - also called DPN; a respiratory oxidation-reduction molecule






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






11. The loss of all or part of a chromosome






12. Living - as in living organisms in the environment






13. A mitotic or meiotic stage in which the chromosomes become visible and during which the spindle fibers form; synapsis takes place during the first meiotic prophase






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






15. Any physical feature that prevents the ecological niches of different organisms from overlapping






16. Compounds in bile that aid in emulsification






17. Chemical groups attached to carbon skeletons that give compounds their functionality






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






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






20. The state in which two genetic traits are fully expressed and neither dominates






21. One-thousandth of a millimeter; a unit of microscopic length






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






23. 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






24. The ourter part of the adrenal gland that secretes many hormones - including cortisone and aldosterone






25. The science of classification of living things






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






27. A space in the body






28. The reproductive organ that produces sex cells






29. A marine arthropod - now extinct - that lived during the Paleozoic era






30. A perforation leading from the pharynx to the outside environment that is a characteristic of chordates at one stage of their development






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






32. The study of all living processes - activities and functions






33. The evaporation of water from leaves or other exposed surfaces of plants






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






35. A process by which the vesicle in the cell fuses with the cell membrane and releases its contents to the outside






36. The phylum to which segmented worms belong






37. One of a class of organic compounds that is composed of many amino acids; contains C - H - O and N






38. An excretory product of protein metabolism






39. A process of formation of ova






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






41. 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






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






43. A structure formed by the wall of the uterus and the chorion of the embryo; serves as the area in which the embryo obtains nutrition from the parent






44. A motile - multinucleate mass of protoplasm resulting from fusion of uninuclear amoeboid cells






45. Bacteria that are rod shaped






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






47. The pollination of the pistil of one flower with pollen from the stamen of a different flower of the same species






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






49. A hormone that stimulates plant stem elongation






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