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






2. Special pointy leaves made to protect the stem






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






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






5. Synthesize proteins based on mRNA code






6. 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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7. Outer layer - barrier to animals and pathogens






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






9. Makes dermal tissue for bark






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






11. Haploid - produces gametes through mitosis






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






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






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






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






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






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






18. Large compound formed from combinations of many monomers






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






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






21. Attached directly by the base






22. Made of acetyl groups - structure energy and storage






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






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






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






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






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






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






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






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






32. A series of proteins in which the high-energy electrons from the Krebs cycle are used to convert ADP into ATP by redox reactions






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






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






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






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






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






38. Part of leaf for photosynthesis






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






40. Brings leaf water and nutrients - exports sugars






41. Convert carbs into ATP






42. Through cells






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






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






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






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






47. Produces secondary vascular tissue






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






49. Increase population fitness in unstable environments






50. Proteins - lipids - carbohydrates - and nucleic acid