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Bio 1500 Final Exam (Mizzou) Study Guide $12.49
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Bio 1500 Final Exam (Mizzou) Study Guide
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Bio 1500 Final Exam (Mizzou) Study Guide. Dragon fly size - answer-high O2 levels in carboniferous allowed them to grow big -later in history predators constrained the max size O2 levels in atomosphere - answercyanobacteria and green algae chloroplasts contributed.... through photosynthesis ol...

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  • August 28, 2024
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  • 2024/2025
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©THEBRIGHT EXAM STUDY SOLUTIONS 8/27/2024 12:01 PM



Bio 1500 Final Exam (Mizzou) Study Guide.


Dragon fly size - answer✔✔-high O2 levels in carboniferous allowed them to grow big
-later in history predators constrained the max size

O2 levels in atomosphere - answer✔✔cyanobacteria and green algae chloroplasts contributed....
through photosynthesis

oldest fossils - answer✔✔3.5-4 bya

1st insects - answer✔✔480 mya

1st dinosaurs - answer✔✔240 mya

dinosaurs go extinct - answer✔✔66 mya

1st homosapiens - answer✔✔200k ya

diffusion - answer✔✔mvmt of molecules from high to low concentration
-driven by Brownian (thermal) mvmts

each molecule during diffusion - answer✔✔-moves randomly
-behavior unpredictable
-each individual molecule never stops moving

net movement of molecules in diffusion - answer✔✔-from high to low conc.
-predictable
-stops when it reaches equlibrium

Photosynthesis - answer✔✔-light energy is used to make carbs from CO2 and water
-takes place in chloroplasts

chloroplasts - answer✔✔-contain the pigment chlorophyll
-chlorophyll absorbs red, blue, & violet light

, ©THEBRIGHT EXAM STUDY SOLUTIONS 8/27/2024 12:01 PM


step 1 of photosynthesis - answer✔✔-light reactions
-ATP is synthesized, NADPH is generated
-water is split apart, releasing O2 as a by product

ATP - answer✔✔-used to transport E around cells
-chemical E stored in the bonds
-important bonds between 2nd and 3rd phosphate group
-going to lower energy state breaks bonds and releases the energy

step 2 of photosynthesis - answer✔✔-light independent reactions
-E from ATP & NADPH are used to build glucose from CO2 & water (Carbon Cycle)

Great Oxygenation Event - answer✔✔-3 -2.3 bya
-cyanobacteria evolved photosynthesis
-free O2 as a side effect... led to some O2 levels in atmosphere

O2 accumulation in atmosphere - answer✔✔-minerals formed (ex: banded iron ore)
-ozone layer formed (protection from UV light)
-free O2 toxic to cells
-O2 reacted with methane.... led to snowball ice age
-prokaryotes evolved ways to use O2... evolution of cellular respiration

Evolution - answer✔✔-a change in allele frequencies in a population
-natural selection is one of the mechanisms

gene - answer✔✔-a segment of DNA w/ instructions for building a protein molecule
-specifies the sequence of amino acids that makeup the protein

alleles - answer✔✔-different possible forms of the same gene
-differ in DNA sequence & in protein structure they code for
-may be many alleles for same gene
-any 1 person can have max of 2 different alleles

Natural Selection - answer✔✔-phenotypes are variable in population

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