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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. Describes cells that have a double set of chromosomes in homologous pairs (2n)






2. An organism that obtains its nutrients from dead organisms






3. The hindbrain region that controls equilibrium and muscular coordination






4. The biome located between the polar region and the tiaga






5. Fluid skeleton of annelids






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






7. In mammals - a flap of tissue above the glottis; it folds back over the glottis in swallowing to close the air passages of the lungs; contains elastic cartilage






8. Partially digested food in the stomach






9. A typical coelenterate individual with a hollow tubular body whose outer ectoderm is separated from its inner ectoderm by mesoglea






10. A hormone of the thyroid that regulates basal metabolism






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






12. Living or active in the absence of free oxygen; pertaining to respiration that is independent of oxygen






13. Plant tissue consisting of large thin-walled cells for storage






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






15. The chamber in the alimentary canal of certain vertebrates located below the large intestine - into which the ureter and reproductive organs empty (as in frogs)






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






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






18. An antipathogenic substance (e.g. - penicillin)






19. The smallest particle that is capable of carrying out photosynthesis; the functional unit of a chloroplast






20. A mall sex hormone (e.g. - testosterone)






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






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






23. The final stages of protein synthesis in which the genetic code of nucleotide sequences is translated into a sequences of amino acids






24. Protein threads that form in the blood during clotting






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






26. 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






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






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






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






30. Degree of penetrability - as in membranes that allow given substances to pass through; the ability to penetrate






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






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






33. The tenth cranial nerve that innervates digestive organs - heart and other areas






34. An enzyme from the pancreas that digests proteins in the small intestine






35. A bundle of nerve axons






36. The phylum of sponges






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






38. A bone of the upper arm






39. A progressive change from which a permanently more mature or advanced state results






40. Fluid-filled structures in the inner ear that are associated with the sense of balance






41. The space between the mesodermal layers that forms the body cavity of some animal phyla






42. A family tree depicting the inheritance of a particular genetic trait over several generations






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






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






45. A metabolic stage between mitoses in which genetic material is reproduced






46. A constituent of the plasma of the blood of vertebrates; it is converted to thrombin by thrombokinase in the presence of calcium ions - thus contributing to the clotting of blood






47. A lateral region of the forebrain






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






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






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