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. Haploid - produces gametes through mitosis






2. ***lets them be sexual?






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






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






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






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






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






8. 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






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






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






11. Command center






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






13. Outer layer - barrier to animals and pathogens






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






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






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






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






18. Convert carbs into ATP






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






20. Provides flexible support - like in celery






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






22. Addition of H2O to break apart polymer






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






24. 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






25. Allows plants to combat sessileness and control growth and allocate resources effectively to best compete/survive in their environment via meristems






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






28. Special pointy leaves made to protect the stem






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






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






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






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






33. Increase population fitness in unstable environments






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






35. Synthesize proteins based on mRNA code






36. Produces secondary vascular tissue






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






38. Photosynthesis and storage






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






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






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






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






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






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






45. Makes dermal tissue for bark






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






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






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






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






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