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






2. A structure found between the cerebral hemispheres of vertebrates; secretes melatonin






3. A specialized structure that controls osmotic pressure by removing water from the cell






4. A motile - multinucleate mass of protoplasm resulting from fusion of uninuclear amoeboid cells






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






6. A bony or chitinous case or shield covering the back or part of the back of an animal (shell of a crab)






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






8. A dark-staining small body within the nucleus; composed of RNA






9. A network or mesh of fibrils - fibers or filaments






10. The cavity between the lungs and the wall of the chest






11. A jellyfish






12. The reproductive organ that produces sex cells






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






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






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






16. A microscopic - whiplike filament that serves as a locomotor structure in flagellate cells






17. 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)






18. The study of form and structure






19. An animal with a constant body temperature






20. A mitotic or meiotic stage in which the chromosomes become visible and during which the spindle fibers form; synapsis takes place during the first meiotic prophase






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






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






23. The enzyme released from the blood platelets in vertebrates during clotting






24. In mammals - the slitlike opening formed by the vocal folds in the larynx






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






26. An abbreviation of nicotinamide-adenine-dinucleotide - also called DPN; a respiratory oxidation-reduction molecule






27. A blood vessel that carries blood away from the heart






28. The large intestine






29. The passive - rhythmical expansion or dilation of the cavities of the heart (atria or ventricles) that allows these organs to fill with blood; preceded and followed by systole (contraction)






30. A mature ovary






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






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






33. The production of a number of different species from a single ancestral species






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






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






36. 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






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






38. A pair of chromosome pairs present during the first metaphase of meiosis






39. The process by which carbohydrates are formed through chemical energy; found in bacteria






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






41. The most anterior portion of the small intestine of vertebrates - adjacent to the stomach; the continuation of the stomach into which the bile duct and pancreatic duct empty






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






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






44. An organelle that regulates cell functions and contains the genetic material of the cell






45. An organism that is heterozygous for two different traits






46. A marine biome; a region on the continental shelf that contains an ocean area with depths of up to 600 ft






47. The ability to respond to a stimulus






48. A five carbon sugar that has one oxygen atom less than ribose; a component of DNA






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






50. Encompasses the brain and the spinal cord