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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 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






2. An enlargement of the thyroid gland due to lack of iodine






3. Organelles that serve as specialized containers for metabolic reactions






4. In mitosis of higher plants - the structure that forms between the divided nuclei of the two daughter cells and eventually becomes the cell wall






5. A microscopic opening located in the epidermis of a leaf and formed by a pair of guard cells






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






7. The hind portion of the forebrain of vertebrates






8. The part of the nervous system that regulates the involuntary muscles - such as the walls of the alimentary canal; includes the parasympathetic and sympathetic nervous systems






9. In mammals - the slitlike opening formed by the vocal folds in the larynx






10. A type of nuclear division that is characterized by complex chromosomal movement and the exact duplication of chromosomes; occurs in somatic cells






11. The loss of all or part of a chromosome






12. A nitrogen base such as cytosine - thymine and uracil; when joined with sugar or phosphate - a component of nucleotides and nucleic acids






13. An embryonic structure that gives rise to the central nervous system






14. The sac in the ovary in which the egg develops






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






16. The study of organisms in relation to their environment






17. The phylum to which jointed-legged invertebrates belong - including insects - arachnids and crustaceans






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






19. A process by which the cytoplasm and the organelles of the cell divide; the final stage of mitosis






20. Passively floating or drifting flora and fauna of a body of water; consists mainly of microscopic organisms






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






22. The ways in which organisms regulate their supply of water






23. The small granular body within the centrosome to which the spindle fibers attach






24. The ability of an organism to contribute its alleles and therefore is phenotypic traits to future generations






25. A grouping of neuron cell bodies that acts as a coordinating center






26. 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






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






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






29. Cytoplasmic organelles that serve as sites of respiration; a rod-shaped body in the cytoplasm known to be the center of cellular respiration






30. A large molecule that is composed of many similar molecule units






31. A network - particularly of nerve or blood vessels






32. Pertaining to the head






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






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






35. A microscopic - whiplike filament that serves as a locomotor structure in flagellate cells






36. A process by which the cell membrane is invaginated to form a vesicle which contains extracellular medium






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






38. A network of capillaries in the Bowman's capsules of the kidney






39. A marine biome typical of the open seas






40. A specialized structure that carries out particular functions for eukaryotic cells






41. A structure found between the cerebral hemispheres of vertebrates; secretes melatonin






42. An organic molecule consisting of joined phosphate - 5-carbon sugar (deoxyribose or ribose) - and a purine or a pyrimidine (adenine - guanine - uracil - thymine or cytosine)






43. An organism that must get its inorganic and organic raw materials from the environment; a consumer






44. The type of mating that occurs when an organism selects a mating partner that resembles itself






45. The fluid that remains after fibrinogen is removed from the blood plasma of vertebrates






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






47. The outermost - extra-embryonic membrane of reptiles and birds






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






49. Protein threads that form in the blood during clotting






50. The anaerobic respiration of carbohydrates







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