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 simple compound whose molecules can join together to form polymers






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






3. ***lets them be sexual?






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






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






6. 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






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






8. Brings leaf water and nutrients - exports sugars






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






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






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






12. Sorting and shipping of molecules






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






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






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






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






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






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






19. Removal of H2O to link monomer and polymers






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






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






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






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






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






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






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






27. Command center






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






29. Haploid - produces gametes through mitosis






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






31. Glycolysis - krebs cycle - electron transport chain






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






33. Outer layer - barrier to animals and pathogens






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






36. Large compound formed from combinations of many monomers






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






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






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






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






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






42. Mycorrhizas and the bubble shaped guys






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






44. Synthesize proteins based on mRNA code






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






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






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






48. 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






49. 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






50. Special pointy leaves made to protect the stem