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






2. A lateral region of the forebrain






3. A duct through which the urine passes from the bladder to the outside






4. A plant that lives on another plant mensalistically






5. A fluid-filled sensory apparatus that aids balance and hearing






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






7. The innermost embryonic germ layer that gives rise to the lining of the alimentary canal and to the digestive and respiratory organs






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






9. The uppermost portion of pistil upon which pollen grains alight






10. The fusion of sperm and the egg to produce a zygote






11. The thin-walled anterior chamber of the heart (also called the auricle)






12. The stage in mitosis that is characterized by the migration of chromatids to opposite ends of the cell; the stage in meiosis during which homologus pairs migrate (Anaphase I) - and the stage in meiosis during which chromatids migrate to different end






13. A stalklike or elongated body part - usually pointed at one end






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






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






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






17. An abbreviation of ribonucleic acid - a nucleic acid in which the sugar is ribose; a product of DNA transcription that serves to control certain cell activities






18. 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)






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






20. Describes a fluid that has a higher osmotic pressure than another fluid it is compared to






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






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






23. The space between the mesodermal layers that forms the body cavity of some animal phyla






24. A metabolic stage between mitoses in which genetic material is reproduced






25. A nerve fiber






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






27. The ability to respond to a stimulus






28. The stable - biotic part of the ecosystem in which populations exist in balance with each other and with the environment






29. The process of forming the sperm cells from primary spermatocytes






30. Fluid-filled structures in the inner ear that are associated with the sense of balance






31. The transfer of pollen to the micropyle or to a receptive surface that is associated with an ovule (such as stigma)






32. The contraction of the atria or ventricles of the heart






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






34. A cell in the retina that is sensitive to weak light






35. An organic compound to which hydrogen and oxygen are attached; the hydrogen and oxygen are in a 2:1 ratio; examples include sugars - starches and cellulose






36. A sex or reproductive cell that must fuse with another of the opposite type to form a zygote






37. 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






38. A cell that divides to form two secondary spermatocytes






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






40. Living - as in living organisms in the environment






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






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






43. 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)






44. An over secretion of thyroid that leads to high metabolism and exopthalmia goiter






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






46. A network of membrane-enclosed spaces connected with the nuclear membrane; transports materials through the cell; can be soft or rough






47. The elimination of metabolic waster matter






48. An organic nutrient required by organisms in small amounts to aid in proper metabolic processes






49. The recycling of carbon from decaying organisms for use in future generations






50. The extraembryonic membrane in birds - reptiles and mammals that surrounds the embryo - forming an amniotic sac