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






2. Sorting and shipping of molecules






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






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






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






6. Outer layer - barrier to animals and pathogens






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






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






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






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






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






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






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






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






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






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






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






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. Made of acetyl groups - structure energy and storage






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






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






22. Makes dermal tissue for bark






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






24. Mycorrhizas and the bubble shaped guys






25. Provides flexible support - like in celery






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






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






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






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






30. Made of amino acids - structure (ex. cytoskeleton) - produce enzymes






31. Addition of H2O to break apart polymer






32. Large compound formed from combinations of many monomers






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






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






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






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






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






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






39. ***lets them be sexual?






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






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






42. Haploid - produces gametes through mitosis






43. 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






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






45. Photosynthesis and storage






46. Glycolysis - krebs cycle - electron transport chain






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






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






49. Attached directly by the base






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