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






2. A process of cell division whereby each daughter cell receives only one set of chromosomes; the formation of gametes






3. The orderly process by which one biotic community replaces another until a climax community is established






4. A chemical messenger that is secreted by one part of the body and carried by the blood to affect another part of the body - usually a muscle or gland






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






6. A category of taxonomic classification that is ranked above class and under kingdoms






7. The innermost embryonic germ layer that gives rise to the lining of the alimentary canal and to the digestive and respiratory organs






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






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






10. The thin - bent part of the renal tubule that is the site of the counter-current flow and the sodium gradient






11. One of the paired lateral divisions of the forebrain






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






13. An enzyme that acts upon maltose and converts it into glucose






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






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






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






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






18. The fluid that remains after fibrinogen is removed from the blood plasma of vertebrates






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






20. Describes an individual that has the same gene for the same trait on each homologous chromosome






21. One of many tubules that absorb tissue fluid and return it to the bloodstream via the lymphatic system






22. A cell in the retina that is sensitive to colors and is responsible for color vision






23. The movement of particles from one place to another as a result of their random motion






24. Asexual reproduction; in this process - the parent organism splits into two equal daughter cells






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






26. Any physical feature that prevents the ecological niches of different organisms from overlapping






27. Structures in the testes that produce sperm and semen






28. Occurs when different traits are inherited together more often than they would have been by chance along; it is assumed that these traits are linked on the same chromosome






29. A complex carrier mechanism located on the inside of the inner mitochondrial membrane of the cell; releases energy and is used to form ATP






30. One-thousandth of a millimeter; a unit of microscopic length






31. A space in the body






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






33. A plant that belongs to the class of seed plants in which the seeds are not enclosed in an ovary; includes the conifers






34. Fluid in the eye - found between the cornea and the lens






35. The portion of the embryonic seed plant below the point of attachment of the coytledon; form the root






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






37. The creation of certain strains of specific traits through control of breeding






38. A perforation leading from the pharynx to the outside environment that is a characteristic of chordates at one stage of their development






39. In plants - the tissue between the epidermis and the vascular cylinder in the roots and stems of plants; in animals - the outer tissue of some organs






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






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






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






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






44. Comprises somatic and autonomic nervous systems; consists of cranial nerves and spinal nerves






45. Chemical groups attached to carbon skeletons that give compounds their functionality






46. A disease-causing organism






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






48. The description of a plant life cycle that consists of a diploid - asexual - sporophyte generation and a haploid - sexual - gametrophyte generation






49. The inner layer of an organ surrounded by the cortex






50. A white or colorless - amorphous - horny substance that forms part of the outer integument of insects - crustaceans and some other invertebrates; it also occurs in certain fungi