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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 substance that is acted upon by an enzyme






2. A network - particularly of nerve or blood vessels






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






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






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






6. A space in the body






7. A specialized structure that leads to the digestive tract of a developing organism and provides it with food during early development






8. The solid ball of cells the results from cleavage of an egg; a solid blastula that precedes the blastula stage






9. The part of the flower that bears the female gametophyte






10. The thigh bone of vertebrates






11. Anaerobic respiration the yields 2 molecules of ATP - lactic acid - ethyl alcohol and carbon dioxide or some similar compound via the glycolytic pathway






12. A disease-causing organism






13. A thyroid deficiency that results in stunted growth and feeblemindedness






14. The functional role and position of an organism in an ecosystem; embodies every aspect of the organism's existence






15. A large class of arthropods - including crabs and lobsters






16. The phylum to which jointed-legged invertebrates belong - including insects - arachnids and crustaceans






17. A dense fluid within the chloroplast in which CO2 is converted into sugars in photosynthesis






18. An underground stem






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






20. The conversion of digested foods and other materials into forms usable by the body (i.e. - the conversion of amino acids into proteins)






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






22. An air sac in the lung; the site of respiratory exchange - involving diffusion of oxygen and carbon dioxide between the air in the alveolus and the blood in the capillaries






23. Different relationships that are formed in proteins between the original sequence of amino acids and more complex three-dimensional compounds






24. Pertains to a gene or characteristic that is masked when a dominant allele is present






25. An organism that possesses one or more whiplike appendages called flagella






26. The hind portion of the forebrain of vertebrates






27. The cellular layer that covers external and internal surfaces






28. The more muscular chamber(s) of the heart that pump blood to the lungs and to the rest of the body






29. An opening in the eye whose size is regulated by the iris






30. The separation of homologous pairs of chromosomes following meiotic synapsis






31. The portion of seed plant embryo above the cotyledon






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






33. The ways in which organisms regulate their supply of water






34. An association of homologous chromosomes during the first meiotic division






35. Fluid excreted by the kidney containing urea - water - salts - etc






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






37. A unit of heat; the amount of heat required to raise the temperature of one gram of water by one degree centigrade






38. A group of populations that can interbreed






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






40. A fat-digesting hormone






41. Partially digested food in the stomach






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






43. A cell in the retina that is sensitive to weak light






44. The pressure exerted by the contents of a cell against the cell membrane or cell wall






45. Semen






46. A form of anaerobic respiration found in yeast and bacteria






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






48. In plants - an area of undifferentiated tissue covered by embryonic leaves






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






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