Test your basic knowledge |

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. A relationship in which one organism benefits at the expense of another






2. The primary germ layer - developed from the lip of the blastopore - that gives rise to the skeleton - the circulatory system and many organs and tissues between the epidermis and the epithelium






3. An undifferentiated - growing region of a plant that is constantly undergoing cell division and differentiation






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






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






6. A reproductive cell that is capable of developing directly into an adult






7. An organism that requires oxygen for respiration and can live only in the presence of oxygen






8. A kind of white blood cell in vertebrates that is characterized by a rounded nucleus; involved in the immune response






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






10. Relating to the lung






11. The diffusion of water through a semipermeable membrane - from an area of greater concentration to an area of lesser concentration






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






13. An excretory product of protein metabolism






14. A hormonal secretion of the adrenal cortex






15. An organ centrally involved in the human digestive system






16. Outgrowths of a root's epidermal cells that allow for greater surface area for absorption of nutrients and water






17. An air duct from the middle ear to the throat that equalizes external and internal air pressure






18. The part of the hindbrain located in the brain stem






19. An organ that is not functional in an organism - but was functional at some period in its evolution






20. Occurs when certain traits are determined by genes on sex chromosomes






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






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






23. A network of membrane-enclosed spaces connected with the nuclear membrane; transports materials through the cell; can be soft or rough






24. One of a class of organic compounds that contains a molecular skeleton of four fused rings of carbon






25. The inner part of the adrenal gland that secretes adrenalin






26. The outermost - extra-embryonic membrane of reptiles and birds






27. A cell in the retina that is sensitive to weak light






28. Deoxyribonucleic acid; found in cell nucleus - its basic unit is the nucleotide; contains coded genetic information; can replicate on the basis of heredity






29. Pertaining to the head






30. A mutation in which a single nucleotide base is substituted for another nucleotide base - or an extra nucleotide base is added






31. A dominant allele suppresses the expression of the other member of an allele pair when both members are present






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






33. The posterior part of the brain that controls the rate of breathing and other autonomic functions






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






35. The failure of some homologous pairs of chromosomes to separate following meiotic synapsis






36. A flowering plant with simple dry fruit - characterized by nodes on their roots that contain nitrogen-fixing bacteria






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






38. Genetic blending; each allele exerts some influence on the phenotype






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






40. The thigh bone of vertebrates






41. A resistance to disease developed through the immune system






42. A protein compound containing iron that is found in red blood cells






43. The ourter part of the adrenal gland that secretes many hormones - including cortisone and aldosterone






44. The phylum to which segmented worms belong






45. The reproductive organ that produces sex cells






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






47. The hindbrain region that controls equilibrium and muscular coordination






48. The organelle that provides mechanical support and carries out motility functions for the cell






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






50. The living matter of a cell - located between the cell membrane and the nucleus