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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. The cellular layer that covers external and internal surfaces






2. A jellyfish






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






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






5. The system of naming an organism by its genus and species name






6. A habitat zone - such as desert - grassland or tundra






7. The process by which water and dissolved substances pass through a membrane






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






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






10. An organism that obtains its nutrients from dead organisms






11. A tract of nerve fibers connecting the two cerebral hemispheres






12. A wall composed of cellulose that is external to the cell membrane in plants; it is primarily involved in support and in the maintenance of proper internal pressure






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






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






15. Living - as in living organisms in the environment






16. A vacuole in the cytoplasm in which digestion takes place (in protozoans)






17. A mutation involving the addition or loss of nucleotides






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






19. The breeding of an organism with a homozygous recessive in order to determine whether an organism is homozygous dominant or heterozygous dominant for a given trait






20. A perforation leading from the pharynx to the outside environment that is a characteristic of chordates at one stage of their development






21. The dorsal part of the hip girdle






22. A process of photosynthesis in which water is split into H+ and OH-; the hydrogen ion is then joined to NADP






23. Occurs when different traits are inherited together more often than they would have been by chance along; it is assumed that these traits are linked on the same chromosome






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






25. One or two or more types of genes - each representing a particular trait; many alleles exist for a specific gene locus






26. A group of life-maintaining processes that includes nutrition - respiration (the production of usable energy) and the synthesis and degradation of biochemical substances






27. A nitrogen base such as cytosine - thymine and uracil; when joined with sugar or phosphate - a component of nucleotides and nucleic acids






28. Encompasses the brain and the spinal cord






29. A female sex hormone secreted by the follicle






30. The most anterior portion of the small intestine of vertebrates - adjacent to the stomach; the continuation of the stomach into which the bile duct and pancreatic duct empty






31. The area of medulla that regulates the rate of breathing






32. Refers to protective covering






33. Cycle in photosynthesis that reduces fixed carbon to carbohydrates through the addition of electrons ("dark cycle")






34. Any chromosome that is not a sex chromosome






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






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






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






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






39. The large intestine






40. A section of the posterior forebrain associated with the pituitary gland






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






42. Nonliving - as in the physical environment






43. A mature ovary






44. 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)






45. Chemical groups attached to carbon skeletons that give compounds their functionality






46. A carbohydrate that is composed of many monosaccharide units joined together






47. 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)






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






49. A mass of cells that have similar structures and perform similar functions






50. 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