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. 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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2. Addition of H2O to break apart polymer






3. Provides flexible support - like in celery






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






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






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






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






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






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






10. Special pointy leaves made to protect the stem






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






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






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






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






15. Increase population fitness in unstable environments






16. Convert carbs into ATP






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






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






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






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






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






22. Fuel - paper - construction materials - furniture - latex - resins - syrup






23. Attached directly by the base






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






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






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






27. CO2 - H2O - NADH - (ATP)






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






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






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






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






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






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






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






35. Haploid - produces gametes through mitosis






36. Outer layer - barrier to animals and pathogens






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






38. 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






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






40. Part of leaf for photosynthesis






41. Proteins - lipids - carbohydrates - and nucleic acid






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






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






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






45. Produces secondary vascular tissue






46. Diploid - produces spores through meiosis






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






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






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






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