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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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PLS-150 Exam #1 URIHow 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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