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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. The kind of bond formed when two amino acid units are jointed end to end






2. A hormone that regulates water reabsorption






3. The small granular body within the centrosome to which the spindle fibers attach






4. The process of forming the sperm cells from primary spermatocytes






5. Describes two or more structures that have similar forms - positions and origins despite the differences between their current functions






6. The vascular tissue of a plant that transports organic materials (photosynthetic products) from the leaves to other parts of the plant






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






8. In mitosis of higher plants - the structure that forms between the divided nuclei of the two daughter cells and eventually becomes the cell wall






9. A flexible - supportive rod running longitudinally through the dorsum ventral to the nerve cord; found in lower chordates and in the embryos of vertebrates






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






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






12. A lymph tubule located in the villus that absorbs fatty acids






13. The site of most digestion of nutrients and absorption of digested nutrients






14. Nonfunctional haploid cells created during meiosis in females; they have very little cytoplasm-most has gone into the functional egg cell






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






16. The loss of all or part of a chromosome






17. An air duct from the middle ear to the throat that equalizes external and internal air pressure






18. The sac in the ovary in which the egg develops






19. The liquid part of blood






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






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






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






23. A nerve fiber






24. The division in animal cell cytoplasm caused by the pinching in of the cell membrane






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






26. A substance that is acted upon by an enzyme






27. Involuntary muscle






28. An enlargement of the thyroid gland due to lack of iodine






29. Tubules that excrete metabolic wastes into the hindgut in arthropods






30. The transfer of a piece of chromosome to another chromosome






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






32. An antipathogenic substance (e.g. - penicillin)






33. The extraembyonic membrane of birds - reptiles and mammals that serves as an area of gaseous exchange and as a site for the storage of noxious excretion products






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






35. The intake of fluid droplets into a cell






36. A sensory hair structure in the utriculus and the sacculus of the inner ear; orients the head with respect to gravity






37. Pertaining to a subdivision of the autonomic nervous system of vertebrates






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






39. An anucleate red blood cell that contains hemoglobin






40. A compact linear organization of nerve tissues with ganglia in the CNS






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






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






43. A small projection in the walls of the small intestine that increases the surface area available for absorption






44. The enzyme that acts upon lactose






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






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






47. Describes an individual that possesses two contrasting alleles for a given trait






48. A change from a diploid nucleus to a haploid nucleus - as in meiosis






49. An air-conducting tube






50. A muscular valve regulating the flow of food from the stomach to the small intestine