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. Proteins - lipids - carbohydrates - and nucleic acid






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






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






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






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






6. Convert light energy to chemical energy






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






8. Attached directly by the base






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






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






11. Command center






12. 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






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






14. 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






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






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






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






18. 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






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






20. Produces secondary vascular tissue






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






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






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






24. Between cells






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






26. Synthesize proteins based on mRNA code






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






28. Number of ATP molecules from 1 glucose in cellular respiration (total produced -- 38 - total yield -- 36)






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






30. Removal of H2O to link monomer and polymers






31. Makes dermal tissue for bark






32. Sorting and shipping of molecules






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






34. Position reactants so they dont require as much activation energy






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






36. Produce vessels in spring and tracheids in winter (ex. oak tree)






37. Stores water and waste and ultimately determines the shape of the cell






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






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






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






41. Practice of employing management strategies to allow healthy return of timber harvest. (ex. leave mature trees - plant seedlings)






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






43. Spore that gives rise to independent bisexual gametophyte that produces both egg and sperm (mosses and ferns)






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






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






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






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






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






49. Special pointy leaves made to protect the stem






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







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