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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. Random evolutionary changes in the genetic makeup of a population






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






3. An embryonic structure that gives rise to the central nervous system






4. The navel






5. The junction or gap between the axon terminal of one neuron and the dendrites of another neuron






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






7. A mitotic stage in which nuclei reform and nuclear membrane reappears






8. 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






9. The external opening of the trachea in insects






10. A starch form in animals; glucose is converted to this in the liver






11. A structure in animal cells containing centrioles from which the spindle fibers develop






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






13. Describes cells (gametes) that have half the chromosome number typical of the species






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






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






16. A lateral region of the forebrain






17. Hormone active in osmoregulation; a mineral corticoid produced by the adrenal cortex; stimulates reabsorption of Na+ and secretion of K+






18. A plant growth hormone






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






20. A purine (nitrogenous base) component of nucleotides and nucleic acids; links with cytosine in DNA






21. The transformation of an immature animal into an adult; a change in the form of an organ or structure






22. Bacteria that are rod shaped






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






24. The living together of two organisms in an intimate relationship






25. The extraembryonic membrane in birds - reptiles and mammals that surrounds the embryo - forming an amniotic sac






26. The haploid - sexual stage in the life cycle of plants






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






28. A structure formed by the wall of the uterus and the chorion of the embryo; serves as the area in which the embryo obtains nutrition from the parent






29. The ability to respond to a stimulus






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






31. The process by which water and dissolved substances pass through a membrane






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






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






34. A decimal fraction that represents the presence of an allele for all members of a population that have a particular gene locus






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






36. An antigen in blood; can cause erythroblastosis fetalis when the mother is Rh- and the fetus is Rh+






37. An organism that possesses both the male and the female reproductive organs






38. The pigment in rod cells that causes light sensitivity






39. The process by which environmental patterns or objects presented to a developing organism during a "critical period" of its growth is accepted as a permanent element of its behavior






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






41. A plastid containing chlorophyll






42. The outer layer of cerebral hemispheres in the forebrain - consisting of gray matter






43. The womb in which the fetus develops






44. The fist stage of protein synthesis - in which the information coded in the DNA base is transcribed onto a strand of mRNA






45. 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






46. A flesh-eating animal; a holotrophic animal that subsists on other animals or parts of animals






47. An offspring that is heterozygous for one or more gene pairs






48. Three membranes that envelop the brain and spinal cord (pia mater - dura mater and arachnoid)






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






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