Test your basic knowledge |

Honors Freshman Science

Subject : science
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. When a cell or nucleus has only a single set of chromosomes






2. The division of the cell cytoplasm to form two cells






3. Provides genetic variation through recombination






4. AUG






5. A section of three nitrogenous bases






6. Cold & dry & permafrost & treeless & short growing season






7. Growth response to gravity & positive in stem & negative in roots






8. A graph of the number of organisms at each trophic level in a given ecosystem






9. The change in allelic frequencies of two or more populations over time & the interdependent evolution of two or more interacting species






10. Rod shaped prokaryotic cells






11. Species that expend their energy in a single & huge reproductive effort






12. The increase in the concentration as the toxin passes through successive levels of the food web






13. Aka contest competition & certain dominant individuals get a good supply of the limited resources while the other less dominant organisms in the population don't






14. A tool of ecological management in which the undergrowth and plant litter are deliberately burned under controlled condition before they accumulate to dangerous levels






15. An important part of the structure of ribosomes that has catalytic functions needed during protein synthesis






16. Lining of the uterus






17. A long & unbranched hydrocarbon chain with a carboxyl group (COOH) at one end






18. The concentration of water is higher than in the other area






19. An organic compound consisting of only carbon and hydrogen






20. The formation of an association between some normal body function and a new stimulus






21. A lipid that consists of a clycerol molecule attached at one end to two fatty acids & and at the other end to a phosphate group linked to an organic compound






22. The graph of the comparison of trophic levels by determining the number of organisms & the biomass & or the relative energy found at each level






23. The buildup of predator and prey strategies






24. Any event in time that disrupts community or population structure






25. The cycle that goes from oen organism to another in food chains and from living organisms to the abiotic environment and back






26. The tubules that extend from each pole to the equatorial region






27. Noncoding material






28. When the chromatin fibers condense into chromosomes






29. A species that is crucial in determining the nature of the entire community and that greatly affects the rest of the community & keeps the who ecosystem in balance






30. The mating of genetically similar individuals that are more closely related than if they had been chosen at random from the entire population






31. Initial fertilized cell






32. The probability of mortality is highest at a young age & the survival probability increases with age






33. Top of the stamen & where pollen is produced






34. The strand of DNA that is always growing away from the replication fork & so only short pieces can be synthesized






35. Daily & 24 hour cycles of activity






36. Growth response to physical disturbance & positive or negative






37. A compound on the surface of animal cells that allow cells to recognize and interact with one another






38. Little 'hairs' around the membrane used for movement






39. The potential ecological niche of a species






40. When natural selection favors individuals of each species that avoid or reduce among coexisting species as a result of each species' niche differing from the others in one or more ways & reducing competition






41. Produces semen (2)






42. Chemical messenger






43. Immature sperm cell






44. When cells touch each other and stop dividing






45. The proportion of a specific allele in a particular population






46. AAAA...






47. Towards the stimulus






48. The number and proportion of people at each age in a population






49. Produces eggs






50. Where protein synthesis takes place