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PLS-150 Exam #1 URI with complete solutions graded A+ passed

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PLS-150 Exam #1 URI with complete solutions graded A+ passed

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  • September 16, 2024
  • 9
  • 2024/2025
  • Exam (elaborations)
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BravelRadon
PLS-150 Exam #1 URI

How old is the Earth? - correct answer ✔✔4 Billion years old



Define Big Bang - correct answer ✔✔Infinitely dense point exploded and created all matter, which is still
expanded



What are the cornerstones of science? - correct answer ✔✔Chemistry, Biology, and Physics



Biology = what 3 things combined - correct answer ✔✔Carbon, chemistry, and physics



What kinds of plants is the course concerned with? - correct answer ✔✔Ones that are economically
important



Most important atom? - correct answer ✔✔Carbon



Ionic Bonds and example - correct answer ✔✔weak bonds caused from different charges, ex: salt



Covalent Bonds and example - correct answer ✔✔Strong bonds caused by shared electrons ex: water



Hydrogren Bond - correct answer ✔✔Super weak bond, more like an association, molecule to molecule,
not atomic level, molecule acts like it has two charges, hydrogen usually present



Most important part of atom? - correct answer ✔✔Proton



Enyzme - correct answer ✔✔A proton that enables a chemical reaction



Sucrose - correct answer ✔✔2 glucose

, Respiration - correct answer ✔✔taking energy from sugars



Horticulture - correct answer ✔✔involves all aspects of plant growth mgmt and economy



Precurser to plants - correct answer ✔✔Phytoplankton



species - correct answer ✔✔group of plants that can readily mate



How are beer, cheese, bread made? - correct answer ✔✔fungi working on plant material



Bamboo grass or tree? - correct answer ✔✔Grass



Name two medicines made from plants - correct answer ✔✔Taxol and morphine



Name for farming civilizations - correct answer ✔✔agrarian



Substinence Farming - correct answer ✔✔Growing no surplus



Name three historical events caused by plants - correct answer ✔✔1315, great famine of europe, 1692,
Salem Witch trials, 1850, potato famine



High yielding varities - correct answer ✔✔crops that have been bred, genetically modified, or fertilized
to increase their production yields.



What did Norman Borlaug do? - correct answer ✔✔He brought rice to india on brink of famine,
produced 10x more, first person in agriculture to get peace price



3 benefits of industrial farming - correct answer ✔✔easy to grow large quantities, requires few people,
creates a uniform product

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