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






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






3. The instance of polymorphism in which there is a difference of form between two members of a species - as between males and females






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






5. The intake of fluid droplets into a cell






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






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






8. The extraembyonic membrane of birds - reptiles and mammals that serves as an area of gaseous exchange and as a site for the storage of noxious excretion products






9. The removal of an amino group from an organism - particularly from an amino acid






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






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






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






13. Asexual reproduction; in this process - the parent organism splits into two equal daughter cells






14. A nerve cell






15. The state in which two genetic traits are fully expressed and neither dominates






16. Globular proteins produced by tissues that destroy or inactivate antigens






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






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






19. The colored part of the eye that is capable of contracting and regulating the size of the pupils






20. The removal of hydrogen or electrons from a compound or addition of oxygen; half of a redox (oxidation or reduction) process






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






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






23. Movement of amoeba






24. A sensory hair structure in the utriculus and the sacculus of the inner ear; orients the head with respect to gravity






25. Describes cells (gametes) that have half the chromosome number typical of the species






26. An underground stem






27. Changes in genes that are inherited






28. A hydrogen carrier containing iron that functions in many cellular processes - including respiration






29. Structures in the testes that produce sperm and semen






30. Living or active in the absence of free oxygen; pertaining to respiration that is independent of oxygen






31. Pertaining to the head






32. The largest portion of the human brain; it is believed to be the center of intelligence - conscious thought and sensation






33. The intake of food from the environment into the alimentary canal






34. A plant-eating animal






35. Describes a fluid that has a lower osmotic pressure than a fluid it is compared to






36. 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






37. The haploid - sexual stage in the life cycle of plants






38. An organism that obtains its nutrients from dead organisms






39. An abbreviation of nicotinamide-adenine-dinucleotide - also called DPN; a respiratory oxidation-reduction molecule






40. Daily cycles of behavior






41. A network - particularly of nerve or blood vessels






42. A plant that has a single cotyledon or seed-leaf






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






44. Describes organisms that are cooperative in action - such as hormones or other growth factors that reinforce each other's activity






45. A group of populations that can interbreed






46. The ability to respond to a stimulus






47. Any movement or growth of a living organism in response to the force of gravity






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






49. A remnant of follicle after ovulation that secretes the hormone progesterone






50. The process by which environmental patterns or objects presented to a developing organism during a "critical period" of its growth is accepted as a permanent element of its behavior