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






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






3. The coagulation of blood caused by the rupture of platelets and the interaction of fibrin - fibrinogen - thrombin - prothrombin and calcium ions






4. There are two kinds of sex chromosomes - X and Y; XX signifies a female and XY signifies a male






5. The separation of some members of a population from the rest of their species; prevents interbreeding and may lead to the development of a new species






6. Substance secreted by organisms that influences the behavior of other members of the same species






7. An air-conducting tube






8. The part of the nervous system that regulates the involuntary muscles - such as the walls of the alimentary canal; includes the parasympathetic and sympathetic nervous systems






9. A hormone produced by the Islets of Langerhans in the pancreas






10. The innermost tissue layer of the eyeball that contains light-sensitive receptor cells






11. The portion of alimentary canal in which some protein digestion occurs






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






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






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






15. A symbol that denotes the relative concentration of hydrogen ions in a solution






16. The intake of fluid droplets into a cell






17. The part of the body of an animal that is between the neck or head and the abdomen






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






19. An excretory product of protein metabolism






20. An organic molecule consisting of joined phosphate - 5-carbon sugar (deoxyribose or ribose) - and a purine or a pyrimidine (adenine - guanine - uracil - thymine or cytosine)






21. Pertaining to the head






22. An association between an algae and a fungus that is symbiotic and mutualistic in nature






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






24. A hormone that stimulates plant stem elongation






25. The largest artery; carries blood from the left ventricle






26. An endocrine gland located in the neck that produces thyroxin






27. The contraction of the atria or ventricles of the heart






28. The association of physical - visceral response with an environmental stimulus with which it is not naturally associated; a learned response






29. A hormone that ripens fruit and induces aging






30. The intake of food from the environment into the alimentary canal






31. A plant that has a single cotyledon or seed-leaf






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






33. A simple sugar






34. The veins that carry blood from the digestive organs to the liver






35. The transfer of pollen to the micropyle or to a receptive surface that is associated with an ovule (such as stigma)






36. Usually referred to as ACTH and secreted by the anterior lobe of the pituitary gland; stimulates the adrenal cortex to produce its characteristic hormones






37. A four-letter code made up of the DNA nitrogen bases A - T - G and C; each chromosome is made up of thousands of these bases






38. An organic nutrient required by organisms in small amounts to aid in proper metabolic processes






39. The hindbrain region that controls equilibrium and muscular coordination






40. Any organism that is the victim of a parasite






41. A green pigment that performs essential functions as an electron donor and light "entrapper" in photosynthesis






42. Structures in the testes that produce sperm and semen






43. The pigment in rod cells that causes light sensitivity






44. Semen






45. The female gonad in animals; the base of the pistil in plants






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






47. A process of formation of ova






48. Organelles that serve as specialized containers for metabolic reactions






49. The study of organisms in relation to their environment






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