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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 anucleate red blood cell that contains hemoglobin






2. A cell that divides to form the polar body and the secondary oocyte






3. The central tissue of a stem - used for food storage






4. A kind of microorganism that is between a virus and a bacterium; parasitic within the cells of insects and ticks






5. A 12-carbon sugar that is formed by the union of two glucose units (a disaccharide)






6. A chemical action that releases energy from glucose to form ATP






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






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






9. An organelle that regulates cell functions and contains the genetic material of the cell






10. A fatty sheath surrounding the axon of a neuron that aids in stimulus transmission; it is secreted by the Schwann cells






11. Describes a fluid that has a lower osmotic pressure than a fluid it is compared to






12. A plastid containing chlorophyll






13. The phylum of sponges






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






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






16. The instance of polymorphism in which there is a difference of form between two members of a species - as between males and females






17. The sensory organ of the inner ear of mammals; it is coiled and contains the organ of corti






18. Protective immunity to a disease in which the individual produces antibodies as a result of previous exposure to the antigen






19. A structure found between the cerebral hemispheres of vertebrates; secretes melatonin






20. The cell body of a neuron






21. All the members of a given species inhabiting a certain locale






22. A waxy protective layer secreted by the outer surface of plants - insects - etcetera






23. A jellyfish






24. An abbreviation of nicotinamide-adenine-dinucleotide-phosphate - also called TPN; an organic compound that serves as an oxidation-reduction molecule






25. The passive - rhythmical expansion or dilation of the cavities of the heart (atria or ventricles) that allows these organs to fill with blood; preceded and followed by systole (contraction)






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






27. A portion of the CNS consisting of cytons (cell bodies) - their dendrites and synaptic connections






28. The genetic makeup of an organism without regard to physical appearance






29. A compact linear organization of nerve tissues with ganglia in the CNS






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






31. The part of the body of an animal that is between the neck or head and the abdomen






32. The portion of seed plant embryo above the cotyledon






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






34. The basal branch of each spinal nerve; carries motor neurons






35. An organism that is heterozygous for two different traits






36. A resistance to disease produced through the injection of antibodies






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






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






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






40. The state in which two genetic traits are fully expressed and neither dominates






41. The ability of certain animals to regrow missing body parts






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






43. Passively floating or drifting flora and fauna of a body of water; consists mainly of microscopic organisms






44. Describes an organism that lives symbiotically with a host; this host neither benefits nor suffers from the association






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






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






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






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






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






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