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...
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
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Thebright. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
