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






3. Synthesize proteins based on mRNA code






4. Increase width (girth) of stems and roots - has vascular cambium and cork cambium






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






6. CO2 - H2O - NADH - (ATP)






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






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






9. 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






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






11. Convert light energy to chemical energy






12. Addition of H2O to break apart polymer






13. 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






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






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






16. Brings leaf water and nutrients - exports sugars






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






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






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






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






21. Removal of H2O to link monomer and polymers






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






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






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






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






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






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






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






29. Command center






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






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






32. Outer layer - barrier to animals and pathogens






33. 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






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






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






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






37. Made of acetyl groups - structure energy and storage






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






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






40. Produces secondary vascular tissue






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






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






43. Attached directly by the base






44. Diploid - produces spores through meiosis






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






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






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






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






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






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