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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 outer - transparent layer of the eye






2. The part of the flower that bears the female gametophyte






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






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






5. The part of the body of an animal that is between the neck or head and the abdomen






6. A mature ovary






7. A nerve fiber






8. An undifferentiated - growing region of a plant that is constantly undergoing cell division and differentiation






9. A stomach enzyme that partially digests proteins






10. A waxy protective layer secreted by the outer surface of plants - insects - etcetera






11. A constituent of the plasma of the blood of vertebrates; it is converted to thrombin by thrombokinase in the presence of calcium ions - thus contributing to the clotting of blood






12. A group of populations that can interbreed






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






14. A kingdom of unicellular living organisms that are neither animals nor plants; includes some groups of algae - slime molds and protozoa






15. An enzyme that acts upon maltose and converts it into glucose






16. A five carbon sugar that has one oxygen atom less than ribose; a component of DNA






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






18. Blood protein that is transformed to fibrin upon clotting






19. The junction or gap between the axon terminal of one neuron and the dendrites of another neuron






20. A ductless gland in upper chest region concerned with immunity and the maturation of lymphocytes






21. A tube connecting the ovaries and the uterus






22. Any cell capable of ingesting another cell






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






24. Semen






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






26. The final stages of protein synthesis in which the genetic code of nucleotide sequences is translated into a sequences of amino acids






27. Occurs when certain traits are determined by genes on sex chromosomes






28. An organism that produces spores; a phase in the diploid-haploid life cycle that alternates with a gametophyte phase






29. The enzyme released from the blood platelets in vertebrates during clotting






30. The production of daughter cells by means other than the sexual union of gametes (as in budding and binary fission)






31. An opening in the eye whose size is regulated by the iris






32. An organic catalyst and protein






33. A digestive enzyme of the saliva that turns starch into maltose (salivary amylase)






34. An organism that requires oxygen for respiration and can live only in the presence of oxygen






35. A relationship in which one organism benefits at the expense of another






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






37. Outgrowths of a root's epidermal cells that allow for greater surface area for absorption of nutrients and water






38. A blood clot that is formed within a blood vessel






39. The phylum of sponges






40. Tubules that excrete metabolic wastes into the hindgut in arthropods






41. 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






42. The anaerobic respiration of carbohydrates






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






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






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






46. Any cell that is not a reproductive cell






47. Related to the sense of smell






48. The womb in which the fetus develops






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






50. The process by which a certain function is regulated by the amount of the substance it produces