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






2. A hormone of the thyroid that regulates basal metabolism






3. The fist stage of protein synthesis - in which the information coded in the DNA base is transcribed onto a strand of mRNA






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






5. An excretory product of protein metabolism






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






7. A four-letter code made up of the DNA nitrogen bases A - T - G and C; each chromosome is made up of thousands of these bases






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






9. The process of breaking down large organic molecules into smaller ones






10. The phylum of sponges






11. The cell body of a neuron






12. The navel






13. The microspore of a seed plant






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






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






16. A flesh-eating animal; a holotrophic animal that subsists on other animals or parts of animals






17. The separation of homologous pairs of chromosomes following meiotic synapsis






18. The phylum to which segmented worms belong






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






20. The orderly process by which one biotic community replaces another until a climax community is established






21. The part of the nervous system that regulates the involuntary muscles - such as the walls of the alimentary canal; includes the parasympathetic and sympathetic nervous systems






22. The pairing of homologous chromosomes during meiosis






23. The reproductive organ that produces sex cells






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






25. An endocrine gland of vertebrates - usually paired - and located near or within the thyroid that secretes parathormone - which controls the metabolism of calcium






26. The ability of an organism to contribute its alleles and therefore is phenotypic traits to future generations






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






28. Organelles that serve as specialized containers for metabolic reactions






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






30. The part of the alimentary canal between the mouth and the esophagus






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






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






33. Protein threads that form in the blood during clotting






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






35. A form of anaerobic respiration found in yeast and bacteria






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






37. The inner portion of the cytoplasm of a cell or the portion that surrounds the nucleus






38. A class of arthropods that includes scorpions - spiders - mites and ticks






39. The class of free-living flatworms






40. A chemical messenger that is secreted by one part of the body and carried by the blood to affect another part of the body - usually a muscle or gland






41. The hormone secreted by the corpus luteum of vertebrates and the placenta of mammals; its function is to maintain the endometrium






42. Organism that consumes food from outside itself instead of producing it






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






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






45. A dark-staining small body within the nucleus; composed of RNA






46. A structure that arises during mitosis and helps separate the chromosomes; composed of tubulin






47. A process of formation of ova






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






49. Adenosine diphosphate (ADP) and adenosine triphosphate (ATP) - which are energy storage molecules






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