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






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






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






4. Through cells






5. Cell walls of cellulose - photosynthesis - indeterminate growth - asexual and sexual reproduction






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






7. Brings leaf water and nutrients - exports sugars






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






9. Provides flexible support - like in celery






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






11. 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






12. Root apical meristem (quiescent center - or zone of cell division) - zone of elongation - zone of maturation






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






14. Increase population fitness in unstable environments






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






16. Produce vessels year round (ex. northern Arizona aspen)






17. Convert light energy to chemical energy






18. CO2 - H2O - NADH - (ATP)






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






20. Produces secondary vascular tissue






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






22. The atmosphere is 21% oxygen - so that inherently means that over time plants have taken in more CO2 than they produce. this must be the case - otherwise we would all be dead.

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






24. Increase width (girth) of stems and roots - has vascular cambium and cork cambium






25. Indeterminate growth - assisted reproduction - protection (chemical deterence - spikes - internal resource transport)






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






27. General purpose cell. thin primary cell wall. most common






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






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






30. Made of acetyl groups - structure energy and storage






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






32. Synthesize proteins based on mRNA code






33. 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






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






35. Makes dermal tissue for bark






36. Part of leaf for photosynthesis






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






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






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






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






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






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






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






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






45. Removal of H2O to link monomer and polymers






46. A simple compound whose molecules can join together to form polymers






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






48. Between cells






49. Part of calvin cycle where five G3Ps are recycled - processed - and linked to form more materials for carbon fixation






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