Test your basic knowledge |

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. Organic compounds not directly involved in normal growth of organism. Facilitates reproduction and defense against predators.






2. Addition of H2O to break apart polymer






3. Anchor the plant - collect water and nutrients from the ground






4. The OEC splits water and transfers the electrons to the P680 or cholorphyll reaction center. In the meantime - the photosystem is absorbing light energy and funnels the energy into the p680 - from which - through a series of redox reactions - the kin






5. Produces megagametophyte that stays with sporophyte plant (produces egg)






6. Outer layer - barrier to animals and pathogens






7. When xylem is blocked by air bubbles as a result of gasses clotting together after freeze-thaw cycles or extreme water-tension






8. Ability crucial to plant structure and processing of energy - allows change to be made to help survival






9. Alternate between sporophyte and gametophyte in the plant life cycle






10. Stick straight up and act like straws in swamp and mangrove plants






11. Provide oxygen - food - medicine - fuel - shelter - paper products - beauty






12. Production of two spore types (gymnosperms and angiosperms)






13. Sorting and shipping of molecules






14. Root hairs capture water and minerals and move them through (symplasticly) or between (apoplasticly) cells until the endodermis filters it into the vascular tissue






15. Biological fuel. captured and stored through photosynthesis - extracted by mitochondria






16. 1) taking wood from an ecosystem also takes nutrients 2) seedling establishment isn't that easy -- lots of competition and herbivory to overcome in building a new forest






17. Between cells






18. Glycolysis - krebs cycle - electron transport chain






19. Waxy protection of leaf to protect from pathogens and let water run off it






20. Develop bordered pits to prevent spreading of bubbles - tracheids let water move laterally - refill at night - produce new xylem every spring






21. Large compound formed from combinations of many monomers






22. Flower to play the role of the gametophyte - producing two different spore types






23. Change root structure entirely - make little bubble roots to help acquire nitrogen and phosphorous in exchange for sugars






24. Brings leaf water and nutrients - exports sugars






25. Position leaves for max photosynthesis - provide resource transportation and storage - escape herbivores






26. Proteins - lipids - carbohydrates - and nucleic acid






27. Have underground stems that store starch (ex. potato)






28. Make long thin stems called 'runners' that grow above ground and aid in asexual reproduction






29. Reactions of photosynthesis in which energy from ATP and NADPH is used to build high-energy compounds such as sugars. 1)reduction - 2)carbon fixation - 3)regeneration






30. The part of the leaf for protection and gas exchange






31. Penetrate root cortex into vascular tissue - aid in acquiring nitrogen and phosphorous in exchange for sugars






32. Made of monosaccharides - building blocks of life - sugars






33. Inter-cellular links for long distance transportation of nutrients






34. Second stage of cellular respiration - in which pyruvic acid is broken down into carbon dioxide in a series of energy-extracting reactions






35. Through cells






36. Removal of H2O to link monomer and polymers






37. Special leaves that act as arms that pull up or support the stem






38. CO2 (exhale) + H20 + ATP (energy) ? CH20 (food) + 02 (air)






39. Gather and convert light energy - control CO2 and water loss






40. Attach themselves to other plants and suck nutrients out of the air (fog - humidity)






41. 1. Prokaryotes are approximately the same size as their organelle counterparts. 2. Double membrane 3. Chloroplasts and mitochondria have their own unique circular DNA






42. CO2 (air) + H20 (soil) + light energy (sun) ? CH20 (carbs) + 02 (oxygen)






43. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid






44. Part of calvin cycle where ATP and NADH are turned into G3P (sugar)






45. Convert light energy to chemical energy






46. Fuel - paper - construction materials - furniture - latex - resins - syrup






47. Free energy in reactants stored in products (carbs)






48. Provides flexible support - like in celery






49. Organic molecules (materials) - enzymes (workers) - DNA (blueprint)






50. Rigid support - mostly found in bark. two types -- fibers and sclereids







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