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






2. 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






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






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






5. A female sex hormone secreted by the follicle






6. A blood vessel that carries blood away from the heart






7. Describes an individual that possesses two contrasting alleles for a given trait






8. A space in the body






9. A white or colorless - amorphous - horny substance that forms part of the outer integument of insects - crustaceans and some other invertebrates; it also occurs in certain fungi






10. The biome located between the polar region and the tiaga






11. A hormonal secretion of the adrenal cortex






12. Any cell capable of ingesting another cell






13. The breeding of an organism with a homozygous recessive in order to determine whether an organism is homozygous dominant or heterozygous dominant for a given trait






14. Describes a fluid that has the same osmotic pressure as a fluid it is compared to






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






16. Related to the sense of smell






17. An organism that does not require free oxygen in order to respire






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






19. The pollination of the pistil of one flower with pollen from the stamen of a different flower of the same species






20. Adrenaline






21. The microspore of a seed plant






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






23. The outer layer of cerebral hemispheres in the forebrain - consisting of gray matter






24. One of the two strands that constitute a chromosome; chromatids are held together by the centromere






25. One of many tubules that absorb tissue fluid and return it to the bloodstream via the lymphatic system






26. The pressure exerted by the contents of a cell against the cell membrane or cell wall






27. Semen






28. Protein threads that form in the blood during clotting






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






30. The outermost surface of an organism






31. A protein compound containing iron that is found in red blood cells






32. A reproductive cell






33. A mutation in which a single nucleotide base is substituted for another nucleotide base - or an extra nucleotide base is added






34. The outermost bone of the middle ear (hammer)






35. A green pigment that performs essential functions as an electron donor and light "entrapper" in photosynthesis






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






37. Pertaining to a restricted locality; ecologically - occurring only in one particular region






38. The female gonad in animals; the base of the pistil in plants






39. A substance that is acted upon by an enzyme






40. Random evolutionary changes in the genetic makeup of a population






41. The class of free-living flatworms






42. Cytoplasmic bodies within a plant cell that are often pigmented






43. The large intestine






44. An anucleate red blood cell that contains hemoglobin






45. The hind portion of the forebrain of vertebrates






46. The primary germ layer - developed from the lip of the blastopore - that gives rise to the skeleton - the circulatory system and many organs and tissues between the epidermis and the epithelium






47. A stage of embryonic development characterized by the differentiation of the cells into the ectoderm and endoderm germ layers and by the formation of the archenteron






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






49. The division in animal cell cytoplasm caused by the pinching in of the cell membrane






50. A group of life-maintaining processes that includes nutrition - respiration (the production of usable energy) and the synthesis and degradation of biochemical substances