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






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






3. Free energy plants get out of the reactant's potential energy






4. Brings leaf water and nutrients - exports sugars






5. Between cells






6. Xylem and phloem - used for transportation of water and sugars in plant






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






8. Mycorrhizas and the bubble shaped guys






9. Made of acetyl groups - structure energy and storage






10. A thin membrane around the cytoplasm of a cell - gatekeeper of the cell






11. Part of leaf that is loose for easy gas diffusion






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






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






14. Glycolysis - krebs cycle - electron transport chain






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






16. Produces microgametophyte that stays with sporophyte plant (produces egg)






17. Increase population fitness in unstable environments






18. Consists of dead hollowed out cells - come in tracheids (long) or vessels (short) - move water in plant






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






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






21. Outer layer - barrier to animals and pathogens






22. 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






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






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






25. Haploid - produces gametes through mitosis






26. A series of proteins in which the high-energy electrons from the Krebs cycle are used to convert ADP into ATP by redox reactions






27. Proteins - lipids - carbohydrates - and nucleic acid






28. More effective in stable environments - focus on fast growth without competition






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






30. Through cells






31. Convert light energy to chemical energy






32. Comes in twos - sieve tubes (no nucleus) and companion cells (nourish sieve tubes) - transport sugars and nutrients






33. A chemical reaction involving the transfer of one or more electrons from one reactant to another; also called oxidation-reduction reaction.






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






35. Made of cellulose - structure and inter-cellular transportation of nutrients via plasmodesmata.






36. Cytoskeleton -- motor proteins carry molecules and organelles across microtubule tracks






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






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






39. Web of protein strands throughout the cell that allows organelles and molecules to move via motor proteins






40. Synthesize proteins based on mRNA code






41. Provides flexible support - like in celery






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






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






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






45. Mosses have no vascular tissue. Ferns reproduce with spores. Conifers reproduce with seeds. Flowering plants have flowers.






46. Part of leaf for photosynthesis






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






48. Convert carbs into ATP






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






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