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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 substance that prevents appreciable changes in pH in solutions to which small quantities of acids or bases are added






2. The large intestine






3. Deoxyribonucleic acid; found in cell nucleus - its basic unit is the nucleotide; contains coded genetic information; can replicate on the basis of heredity






4. One of the primary tissues of the embryo






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






6. One of the two strands that constitute a chromosome; chromatids are held together by the centromere






7. A lateral region of the forebrain






8. An "emergency" hormone stimulated by anger or fear; increase blood pressure and heart rate in order to supply the emergency needs of the muscles






9. A family tree depicting the inheritance of a particular genetic trait over several generations






10. The cell membrane






11. Involuntary muscle






12. The innermost tissue layer of the eyeball that contains light-sensitive receptor cells






13. A fat-digesting hormone






14. A chemical messenger that is secreted by one part of the body and carried by the blood to affect another part of the body - usually a muscle or gland






15. 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






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






17. The cell body of a neuron






18. A network or mesh of fibrils - fibers or filaments






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






20. An antigen in blood; can cause erythroblastosis fetalis when the mother is Rh- and the fetus is Rh+






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






22. An organ centrally involved in the human digestive system






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






24. A plant that has two seed leaves or cotyledons






25. The pigment in rod cells that causes light sensitivity






26. 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






27. A disease-causing organism






28. Pertaining to a subdivision of the autonomic nervous system






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






30. Multicellular organism






31. An organelle that regulates cell functions and contains the genetic material of the cell






32. The organelle that provides mechanical support and carries out motility functions for the cell






33. The outermost bone of the middle ear (hammer)






34. A plant-eating animal






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






36. One of a class of organic compounds that is composed of many amino acids; contains C - H - O and N






37. Describes structures that have similar function but different evolutionary origins; e.g. - a bird's wing and a moth's wing






38. An anterior pituitary hormone that stimulates the follicles in females and the function of the seminiferous tubules in males






39. An organism that utilizes the energy of inorganic materials such as water and carbon dioxide or the sun to manufacture organic materials






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






41. The law by which genes on different chromosomes are inherited independently of each other






42. An air sac in the lung; the site of respiratory exchange - involving diffusion of oxygen and carbon dioxide between the air in the alveolus and the blood in the capillaries






43. The extraembryonic membrane in birds - reptiles and mammals that surrounds the embryo - forming an amniotic sac






44. Describes a fluid that has the same osmotic pressure as a fluid it is compared to






45. A form of asexual reproduction in which the egg develops in the absence of sperm






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






47. A multidirectional sensory system of lower animals such as the hydra - consisting of nerve fibers spread throughout the ectoderm






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






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






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