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






2. The outer - transparent layer of the eye






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






4. The solid ball of cells the results from cleavage of an egg; a solid blastula that precedes the blastula stage






5. The separation of some members of a population from the rest of their species; prevents interbreeding and may lead to the development of a new species






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






7. The reproductive organ that produces sex cells






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






9. The intake of food from the environment into the alimentary canal






10. One of a class of organic compounds that contains a molecular skeleton of four fused rings of carbon






11. A flexible - supportive rod running longitudinally through the dorsum ventral to the nerve cord; found in lower chordates and in the embryos of vertebrates






12. A nitrogenous base such as adenine or guanine; when joined with sugar or phosphate - a component of nucleotides and nucleic acids






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






14. A sensory organ capable of detecting light






15. The small granular body within the centrosome to which the spindle fibers attach






16. Related to the sense of smell






17. Movement of amoeba






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






19. The class of free-living flatworms






20. A process by which the cell membrane is invaginated to form a vesicle which contains extracellular medium






21. Pertaining to a type of gland that releases its secretion through a duct






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






23. A behavioral or biological change that enables an organism to adjust to its environment






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






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






26. The orientation of cells or organisms in relation to chemical stimuli; the growth or movement response of organisms to chemical stimuli






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






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






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






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






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






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






33. Laws of classical genetics established through Mendel's experiments with peas






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






35. The posterior part of the brain that controls the rate of breathing and other autonomic functions






36. A structure that extends from the trunk of an organism and is capable of active movements






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






38. A network or mesh of fibrils - fibers or filaments






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






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






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






42. The kind of bond formed when two amino acid units are jointed end to end






43. The elimination of metabolic waster matter






44. A motile - multinucleate mass of protoplasm resulting from fusion of uninuclear amoeboid cells






45. In mitosis of higher plants - the structure that forms between the divided nuclei of the two daughter cells and eventually becomes the cell wall






46. The description of a plant life cycle that consists of a diploid - asexual - sporophyte generation and a haploid - sexual - gametrophyte generation






47. A large class of arthropods - including crabs and lobsters






48. An animal with a constant body temperature






49. A thin - transparent - eyelid-like membrane that opens and closes laterally across the cornea of many vertebrates (the third eyelid)






50. A network - particularly of nerve or blood vessels