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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. A terrestrial habitat zone that is characterized by large tracts of coniferous forests - long and cold winters - and short summers






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






3. A marine arthropod - now extinct - that lived during the Paleozoic era






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






5. 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)






6. One of a group of compounds that is identical in a atomic composition - but different in structure and arrangement






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






8. 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






9. A mucus-secreting membrane






10. Waves of contraction and relaxation passing along a tubular structure - such as the digestive tube






11. The first filial generation (first offspring)






12. Involuntary muscle






13. A hormone produced by the Islets of Langerhans in the pancreas






14. A plant that lives on another plant mensalistically






15. Organelles that serve as specialized containers for metabolic reactions






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






17. A structure formed by the wall of the uterus and the chorion of the embryo; serves as the area in which the embryo obtains nutrition from the parent






18. Technology that allows for manipulation of genetic material






19. The individual differences of form among the members of a species






20. The outer - transparent layer of the eye






21. An organic catalyst and protein






22. A female sex hormone secreted by the follicle






23. A type of virus that can destroy bacteria by infecting - parasitizing and eventually killing them






24. The hind portion of the forebrain of vertebrates






25. Genetic blending; each allele exerts some influence on the phenotype






26. The outermost embryonic germ layer that gives rise to the epidermis and the nervous system






27. A space in the body






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






29. The smallest particle that is capable of carrying out photosynthesis; the functional unit of a chloroplast






30. A resistance to disease developed through the immune system






31. An antigen in blood; can cause erythroblastosis fetalis when the mother is Rh- and the fetus is Rh+






32. The thin - bent part of the renal tubule that is the site of the counter-current flow and the sodium gradient






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






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






35. A mitotic stage in which nuclei reform and nuclear membrane reappears






36. One of the primary tissues of the embryo






37. A plant growth hormone






38. Agent that induces mutations; typically carcinogenic






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






40. A transmitter substance released from the axons of nerve cells at the synapse






41. Any physical feature that prevents the ecological niches of different organisms from overlapping






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






43. A plant that belongs to the class of seed plants in which the seeds are not enclosed in an ovary; includes the conifers






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






45. The inner layer of an organ surrounded by the cortex






46. A multidirectional sensory system of lower animals such as the hydra - consisting of nerve fibers spread throughout the ectoderm






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






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






49. A nerve fiber






50. The living together of two organisms in an intimate relationship