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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. One of a pair of kidney-shaped cells that surround a stomate and regulate the size of the stomate in a leaf






2. 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






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






4. Blood vessels located between ascending and descending aortas that deliver blood to most of the upper body






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






6. The pigment in rod cells that causes light sensitivity






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






8. 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






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






10. Fluid skeleton of annelids






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






12. Pertaining to a restricted locality; ecologically - occurring only in one particular region






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






14. A stomach enzyme that partially digests proteins






15. Globular proteins produced by tissues that destroy or inactivate antigens






16. An underground stem






17. The process of forming the sperm cells from primary spermatocytes






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






19. A grouping of neuron cell bodies that acts as a coordinating center






20. The enzyme that acts upon lactose






21. Bacteria that are rod shaped






22. A short - stubby rod consisting of chromatin that is found in the nucleus of the cells; contains the genetic or hereditary component of cells (in the form of genes)






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






24. The part of the male reproductive organ (the stamen) that produces and stores pollen






25. A neuron that picks up impulses from receptors and transmits them to the spinal cord






26. A space in the body






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






28. The study of organisms in relation to their environment






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






30. The individual differences of form among the members of a species






31. A hoofed animal






32. A hormone of the thyroid that regulates basal metabolism






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






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






35. Waves of contraction and relaxation passing along a tubular structure - such as the digestive tube






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






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






38. Small - disc-shaped bodies in the blood that play a chief role in coagulation






39. An organism that does not require free oxygen in order to respire






40. The part of the neuron that transmits impulses to the cell body






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






42. A ductless gland that secretes hormones directly into the bloodstream






43. A nitrogen base that is present in nucleotides and nucleic acids; it is paired with guanine






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






45. A ductless gland in upper chest region concerned with immunity and the maturation of lymphocytes






46. The stage in mitosis that is characterized by the migration of chromatids to opposite ends of the cell; the stage in meiosis during which homologus pairs migrate (Anaphase I) - and the stage in meiosis during which chromatids migrate to different end






47. 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






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






49. An association between an algae and a fungus that is symbiotic and mutualistic in nature






50. The recycling of nitrogen from decaying organism for use in future generations