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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 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






2. A pyrimidine component of nucleic acids and nucleotides; pairs with adenine in DNA






3. Nonfunctional haploid cells created during meiosis in females; they have very little cytoplasm-most has gone into the functional egg cell






4. The place of attachment of the mitotic fiber to the chromosome






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






6. A hormone that stimulates plant stem elongation






7. The mammalian oviduct that leads from the ovaries to the uterus






8. Describes arthropods and other animals whose skeletal or supporting structures are outside the skin






9. An invertebrate animal phylum in which animals possess a single alimentary opening and tentacles with stinging cells






10. Degree of penetrability - as in membranes that allow given substances to pass through; the ability to penetrate






11. A gland composed of two parts - anterior and posterior - each with its own secretions; called the "master gland" because its hormones stimulate secretions by other glands






12. An emulsifying agent secreted by the liver






13. The tenth cranial nerve that innervates digestive organs - heart and other areas






14. Plant tissue consisting of large thin-walled cells for storage






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






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






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






18. The sensory organ of the inner ear of mammals; it is coiled and contains the organ of corti






19. An air duct from the middle ear to the throat that equalizes external and internal air pressure






20. 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)






21. 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






22. An organ that is not functional in an organism - but was functional at some period in its evolution






23. The hind portion of the forebrain of vertebrates






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






25. A mall sex hormone (e.g. - testosterone)






26. A simple sugar






27. 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






28. The living matter of a cell - located between the cell membrane and the nucleus






29. An organ that stores bile






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






31. Daily cycles of behavior






32. A process of formation of ova






33. The liquid part of blood






34. A hormone that regulates water reabsorption






35. The law by which genes on different chromosomes are inherited independently of each other






36. A form of asexual reproduction in which the egg develops in the absence of sperm






37. Small - disc-shaped bodies in the blood that play a chief role in coagulation






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






39. Process of aerobic respiration that fully harvests the energy of glucose; also known as the citric acid cycle






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






41. A purine (nitrogenous base) component of nucleotides and nucleic acids; links with cytosine in DNA






42. An underground stem






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






44. The pigment in rod cells that causes light sensitivity






45. A hormone that ripens fruit and induces aging






46. An animal phylum in which all members have a notochord - dorsal nerve cord and pharyngeal gill slits at some embryonic stage; includes the Cephalochordata and the Vertebrates






47. Protein threads that form in the blood during clotting






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






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






50. A pouched mammal - such as the kangaroo or opossum