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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 abbreviation of nicotinamide-adenine-dinucleotide - also called DPN; a respiratory oxidation-reduction molecule






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






3. The second filial generation; offspring resulting from the crossing of individuals of the F1 generation






4. Substance secreted by organisms that influences the behavior of other members of the same species






5. A substance that prevents appreciable changes in pH in solutions to which small quantities of acids or bases are added






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






7. Agent that induces mutations; typically carcinogenic






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






9. Any cell capable of ingesting another cell






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






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






12. A process of asexual reproduction in which the offspring develop from an outgrowth of the plant or animal






13. Organelles that serve as specialized containers for metabolic reactions






14. A bony or chitinous case or shield covering the back or part of the back of an animal (shell of a crab)






15. Any movement or growth of a living organism in response to the force of gravity






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






17. 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






18. The process by which a certain function is regulated by the amount of the substance it produces






19. The sensory branch of each spinal nerve






20. A type of nuclear division that is characterized by complex chromosomal movement and the exact duplication of chromosomes; occurs in somatic cells






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






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






23. Describes an individual that has the same gene for the same trait on each homologous chromosome






24. Protein threads that form in the blood during clotting






25. A ring-shaped muscle that is capable of closing a tubular opening by constriction






26. A structure of the eye that focuses images on the retina by changing its convexity






27. An organelle that contains enzymes that aid in intracellular digestion






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






29. A symbol that denotes the relative concentration of hydrogen ions in a solution






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






31. The pressure exerted by the contents of a cell against the cell membrane or cell wall






32. Asexual reproduction; in this process - the parent organism splits into two equal daughter cells






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






34. An animal phylum in which all members have a notochord - dorsal nerve cord and pharyngeal gill slits at some embryonic stage; includes the Cephalochordata and the Vertebrates






35. A thyroid deficiency that results in stunted growth and feeblemindedness






36. The site of most digestion of nutrients and absorption of digested nutrients






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






38. An ion with a positive charge - or an ion that migrates towards the cathode (negative electrode) in an electric field






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






40. The functional role and position of an organism in an ecosystem; embodies every aspect of the organism's existence






41. The portion of the embryonic seed plant below the point of attachment of the coytledon; form the root






42. A pair of chromosome pairs present during the first metaphase of meiosis






43. The ways in which organisms regulate their internal heat






44. Process of aerobic respiration that fully harvests the energy of glucose; also known as the citric acid cycle






45. The more muscular chamber(s) of the heart that pump blood to the lungs and to the rest of the body






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






47. The sac in the ovary in which the egg develops






48. A duct that carries urine from the kidneys to the bladder






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






50. A hormone that stimulates plant stem elongation