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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 disease-causing organism






2. The outer - transparent layer of the eye






3. A group of populations that can interbreed






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






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






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






7. The ourter part of the adrenal gland that secretes many hormones - including cortisone and aldosterone






8. The microspore of a seed plant






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






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






11. The site of most digestion of nutrients and absorption of digested nutrients






12. A process of cell division whereby each daughter cell receives only one set of chromosomes; the formation of gametes






13. The separation of some members of a population from the rest of their species; prevents interbreeding and may lead to the development of a new species






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






15. The cell body of a neuron






16. One-thousandth of a millimeter; a unit of microscopic length






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






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






19. A marine biome; a region on the continental shelf that contains an ocean area with depths of up to 600 ft






20. The enzyme that acts upon lactose






21. Requiring free oxygen from the atmosphere for normal activity and respiration






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






23. The thigh bone of vertebrates






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






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






26. Protein threads that form in the blood during clotting






27. The physical appearance or makeup of an individual - as opposed to its genetic makeup






28. The part of the flower that produces pollen






29. A flexible - supportive rod running longitudinally through the dorsum ventral to the nerve cord; found in lower chordates and in the embryos of vertebrates






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






31. The fist stage of protein synthesis - in which the information coded in the DNA base is transcribed onto a strand of mRNA






32. A cell that divides to form the polar body and the secondary oocyte






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






34. A nitrogenous base such as adenine or guanine; when joined with sugar or phosphate - a component of nucleotides and nucleic acids






35. The thin - bent part of the renal tubule that is the site of the counter-current flow and the sodium gradient






36. The conversion of digested foods and other materials into forms usable by the body (i.e. - the conversion of amino acids into proteins)






37. The innermost embryonic germ layer that gives rise to the lining of the alimentary canal and to the digestive and respiratory organs






38. A process of photosynthesis in which water is split into H+ and OH-; the hydrogen ion is then joined to NADP






39. A sensory organ capable of detecting light






40. The ways in which organisms regulate their internal heat






41. Protective immunity to a disease in which the individual produces antibodies as a result of previous exposure to the antigen






42. The liquid part of blood






43. A muscular valve regulating the flow of food from the stomach to the small intestine






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






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






46. A jellyfish






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






48. Nonliving - as in the physical environment






49. Organism that produces its own food; first stage in the food chain






50. A short - stubby rod consisting of chromatin that is found in the nucleus of the cells; contains the genetic or hereditary component of cells (in the form of genes)