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






2. Produces bisexual spores - they become gametophytes w/ egg and sperm (study the picture)






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






4. Makes dermal tissue for bark






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






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






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






8. Through cells






9. Command center






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






11. Lengthen roots and stem - produce xylem and phloem - ground tissue - and epidermis






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






13. Synthesize proteins based on mRNA code






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






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






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






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






18. Outer layer - barrier to animals and pathogens






19. 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






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






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






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






23. Proteins - lipids - carbohydrates - and nucleic acid






24. Glycolysis - krebs cycle - electron transport chain






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






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






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






28. Diploid - produces spores through meiosis






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






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






31. 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






32. Large compound formed from combinations of many monomers






33. Provides flexible support - like in celery






34. Convert carbs into ATP






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






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






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






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






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






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






41. Molecule manufacturing where ribosomes are - and then products are sent to the Golgi Apparatus






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






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






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






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






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






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






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






49. Part of leaf for photosynthesis






50. Part of calvin cycle where ATP and NADH are created