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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. LH-like hormone produced by the placenta that maintains the corpus luteum






2. When the heterozygote has a phenotype intermediate between those of its two parents






3. On the side where the 3' carbon is

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4. A sequence of three bases that hydrogen bond with the mRNA codon by complementary base pairing






5. Reproductive isolation due to structural differences






6. A link formed when two amino acids combine






7. Unzips the DNA strand






8. All the Earth's communities and their interactions and connections with the planet's abiotic factors






9. Microsporocyte after meiosis






10. Any process that leads to new gene combinations






11. A parasite that lives inside the host






12. Have traits that contribute to a high population growth rate & usually small & reach maturity early & have short life span & have lots of offspring & provide little to no parental care






13. A compound present on the outer surface of cells that aren't bacteria






14. Eggs and sperm combine






15. Where protein synthesis takes place






16. The study of behavior in natural environments from an evolutionary perspective






17. More cells






18. A conservation approach that emphasizes restoring and maintaining the quality of an entire ecoystem rather than the conservation of individual species






19. A simple signal that triggers a specific behavioral response






20. The layer that surrounds the cell and holds everything in






21. A form of natural selection that increases inclusive fitness through the breeding success of close relatives






22. Cells don't produce new cytoplasm to make the cell bigger & they produce an excess of protons which soften the cell walls so that the water vacuole fills up and makes the cell bigger






23. A symbiotic relationship in which both partners benefit






24. Busiest at dawn or dusk






25. The proportion of a particular genotype in the population






26. The local environment where a species lives






27. When individuals are evenly spaced & occurs because of territoriality or competition for resources or space






28. When individuals of the same sex actively compete for mates






29. The transmission of genetic information from parent to offspring






30. An environmental factor whose ways of affecting a population are altered when there is a change in population density






31. Focuses on the evolution of social behavior through natural selection






32. Capillary bed that is adjacent to the capillaries of the uterine lining & exchanges everything except for blood






33. The structure in the mitochondria






34. Chemical messenger






35. When a cell or nucleus has only a single set of chromosomes






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






37. A symbiotic relationship in which both partners benefit






38. The study of how living organisms and the physical environment interact in an immense and complcated web of relationships & the broadest field of biology






39. The offspring of two genetically dissimilar parents






40. Lining of the uterus






41. Species that are all undesirable resemble each other






42. A macromolecule composed of amino acids






43. The beta pleated sheet or alpha helix






44. Stalk of the stamen






45. The idea that evolution takes place in relatively short bursts of rapid change followed by long periods of stability






46. Produces semen (2)






47. Controls the growth and development in animals






48. Occurs when the environment is worsening from too many people






49. The lifestyle a species actually pursues and the resources it actually uses






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







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Can you answer 50 questions in 15 minutes?


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