Test your basic knowledge |

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






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






3. The transfer of pollen to the micropyle or to a receptive surface that is associated with an ovule (such as stigma)






4. A symbiotic relationship from which both organisms involved derive some benefit






5. A change from a diploid nucleus to a haploid nucleus - as in meiosis






6. Changes in genes that are inherited






7. A disease-causing organism






8. A thin - transparent - eyelid-like membrane that opens and closes laterally across the cornea of many vertebrates (the third eyelid)






9. Agent that induces mutations; typically carcinogenic






10. A fatty sheath surrounding the axon of a neuron that aids in stimulus transmission; it is secreted by the Schwann cells






11. A plastid containing chlorophyll






12. A mucus-secreting membrane






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






14. A wall composed of cellulose that is external to the cell membrane in plants; it is primarily involved in support and in the maintenance of proper internal pressure






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






16. An organic catalyst and protein






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






18. The first filial generation (first offspring)






19. A fat-digesting hormone






20. 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






21. The second filial generation; offspring resulting from the crossing of individuals of the F1 generation






22. A sensory organ capable of detecting light






23. A cell that divides to form two secondary spermatocytes






24. A tube connecting the ovaries and the uterus






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






26. A mature ovary






27. A starch form in animals; glucose is converted to this in the liver






28. The coiled part of the sperm duct - adjacent to the testes in mammals






29. An organelle that contains enzymes that aid in intracellular digestion






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






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






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






33. A bone of the upper arm






34. The pairing of homologous chromosomes during meiosis






35. A structure of the eye that focuses images on the retina by changing its convexity






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






37. A pair of chromosome pairs present during the first metaphase of meiosis






38. Blood vessels located between ascending and descending aortas that deliver blood to most of the upper body






39. An organic cofactor required for enzyme activity






40. An abbreviation of ribonucleic acid - a nucleic acid in which the sugar is ribose; a product of DNA transcription that serves to control certain cell activities






41. A fluid-filled sensory apparatus that aids balance and hearing






42. An organic compound to which hydrogen and oxygen are attached; the hydrogen and oxygen are in a 2:1 ratio; examples include sugars - starches and cellulose






43. The inner portion of the cytoplasm of a cell or the portion that surrounds the nucleus






44. A nerve cell






45. Protein threads that form in the blood during clotting






46. The navel






47. A type of virus that can destroy bacteria by infecting - parasitizing and eventually killing them






48. A hormonal secretion of the adrenal cortex






49. In taxonomy - a classification between species and family






50. Pertaining to a type of gland that releases its secretion through a duct