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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. The production of daughter cells by means other than the sexual union of gametes (as in budding and binary fission)






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






4. A type of anaerobic respiration found in fungi - bacteria and human muscle cells






5. Occurs when a segment of genetic material on a chromosome becomes reversed






6. The cell body of a neuron






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






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






9. A female sex hormone secreted by the follicle






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






11. The law by which genes on different chromosomes are inherited independently of each other






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






13. The fusion of sperm and the egg to produce a zygote






14. A portion of the CNS consisting of cytons (cell bodies) - their dendrites and synaptic connections






15. Small - disc-shaped bodies in the blood that play a chief role in coagulation






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






17. The inner part of the adrenal gland that secretes adrenalin






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






19. A category of taxonomic classification that is ranked above class and under kingdoms






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






21. A space in the cytoplasm of a cell that contains fluid






22. The study of the evolutionary descent and interrelations of groups of organisms






23. A nerve cell






24. Describes structures that have similar function but different evolutionary origins; e.g. - a bird's wing and a moth's wing






25. The cellular layer that covers external and internal surfaces






26. 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






27. Multicellular organism






28. The outer - transparent layer of the eye






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






30. Hormone active in osmoregulation; a mineral corticoid produced by the adrenal cortex; stimulates reabsorption of Na+ and secretion of K+






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






32. A process by which the cell membrane is invaginated to form a vesicle which contains extracellular medium






33. Self-digestion occurring in plant and animal tissues - particularly after they have ceased to function properly






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






35. A process of formation of ova






36. Genetic blending; each allele exerts some influence on the phenotype






37. Fluid skeleton of annelids






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






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






40. An ion with a positive charge - or an ion that migrates towards the cathode (negative electrode) in an electric field






41. Organism that produces its own food; first stage in the food chain






42. The pigment in rod cells that causes light sensitivity






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






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






45. The cell membrane






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






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






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






49. Describes cells that have a double set of chromosomes in homologous pairs (2n)






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







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