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BIO 100 FINAL EXAM CORRECT QUESTION AND ANSWERS

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BIO 100 FINAL EXAM CORRECT QUESTION AND ANSWERS

Institution
BIO 181
Course
BIO 181

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What critical elements need to be recycled?


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water, nitrogen, carbon, and phosphorus




What keeps the cell's shape?


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the cytoskeleton which has components such as microfilaments (made of
actin) and micortubules (made of tubulin and form channels)




Phosphorus cycle

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- recycles phosphorus
- key reservoir for phosphorus is soil/bedrock




Predation - How does it regulate Population Growth?


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- predation and population size go in cycles




Why haven't all standing crops been eaten?


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- plants have defenses to keep herbivores in check
- predation controls number of herbivores
- intraspecies competition keeps herbivores in check
- plants are low in nutrient context
- suitable territory limits the number of herbivores




Fundamental niche


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the maximum amount of space an organism could potentially occupy

,A solution of starch at room temperature does not readily decompose to form a
solution of simple sugars. Why not?


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because the activation energy barrier for this reaction cannot easily be
overcome at room temperature




Saturated fat


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no double bonds, every carbon is full with the number of atoms it can hold
ex - butter




Symbiosis


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2 or more organisms living in direct physical contact with each other
* types of symbiosis include parasitism, mutualism, and commensilism




What is the chemical equation for photosynthesis?


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, CO2 + H20 + Sunlight ---> C6H12O6(glucose) + O2




Which of the following processes is most directly driven by light energy?
a. creation of a pH gradient by pumping protons across the thylakoid membrane
b. carbon fixation in the stroma
c. reduction of NADP+ molecules
d. removal of electrons from chloroplast molecules
e. ATP synthesis


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removal of electrons from chloroplast molecules




Trophic Structures


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Food networks that show how energy is flowing through the community
- Primary producers (photosynthetic organisms)
- Primary consumers (herbivores)
- Secondary consumer
- Tertiary consumer
- Quaternary consumer
- Decomposer --> decomposes left over "food" which goes back into the
ground for primary producer to use to make more food/organic material




The ability of water to be a solvent, have adhesive and cohesive properties, have a
major influence on local climate, as well as the solid being less dense than the liquid.
What are all of these a result of?

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BIO 181
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