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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 structure that arises during mitosis and helps separate the chromosomes; composed of tubulin






2. The outermost embryonic germ layer that gives rise to the epidermis and the nervous system






3. A structure in animal cells containing centrioles from which the spindle fibers develop






4. Undifferentiated tissue in the stem of a plant that aids growth in width






5. The liquid part of blood






6. One of the two strands that constitute a chromosome; chromatids are held together by the centromere






7. Involuntary muscle






8. The portion of alimentary canal connecting the pharynx and the stomach






9. 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






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






11. A substance that prevents appreciable changes in pH in solutions to which small quantities of acids or bases are added






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






13. Describes organisms that are cooperative in action - such as hormones or other growth factors that reinforce each other's activity






14. An organism that produces spores; a phase in the diploid-haploid life cycle that alternates with a gametophyte phase






15. One or two or more types of genes - each representing a particular trait; many alleles exist for a specific gene locus






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






17. The transfer of pollen from the stamen to the pistil of the same flower






18. A pyrimidine found in RNA (but not DNA); pairs with DNA adenine






19. A flowering plant; a plant of the class Angiospermae that produces seeds enclosed in an ovary and is characterized by the possession of fruits and flowers






20. A jellyfish






21. Pertaining to a type of gland that releases its secretion through a duct






22. The outermost bone of the middle ear (hammer)






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






24. A female sex hormone secreted by the follicle






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






26. A nerve fiber






27. The reproductive organ that produces sex cells






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






29. An organ centrally involved in the human digestive system






30. The failure of some homologous pairs of chromosomes to separate following meiotic synapsis






31. A digestive enzyme of the saliva that turns starch into maltose (salivary amylase)






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






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






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






35. The portion of a DNA molecule that serves as a unit of heredity; found on the chromosome






36. The stable - biotic part of the ecosystem in which populations exist in balance with each other and with the environment






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






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






39. The dorsal part of the hip girdle






40. A constituent of the plasma of the blood of vertebrates; it is converted to thrombin by thrombokinase in the presence of calcium ions - thus contributing to the clotting of blood






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






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






43. Describes cells (gametes) that have half the chromosome number typical of the species






44. Any cell capable of ingesting another cell






45. A flowering plant with simple dry fruit - characterized by nodes on their roots that contain nitrogen-fixing bacteria






46. The hormone secreted by the corpus luteum of vertebrates and the placenta of mammals; its function is to maintain the endometrium






47. The cellular layer that covers external and internal surfaces






48. Cells which in the female are located between the ovarian follicles and in the male are located between the seminiferous tubules of the testes






49. The colored part of the eye that is capable of contracting and regulating the size of the pupils






50. The sensory branch of each spinal nerve