Notesale: Turn your study into money

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Carbon:
The most revolutionary course in biology of all time begins
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What about electron orbitals and the octet rule, and what does it all have to do
with a madman named Gilbert Lewis
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It can do this in infinite configurations, allowing it to be the core
atom of complicated structures that make living things like ourselves
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Carbon is the foundation of biology
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It 's not some abstract scientific thing that 's always existed
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up by a guy, and it was so useful that we 've been using it ever since in biology, most
compounds can be displayed in lewishish dot structure form
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scientists and astronomers
are always looking out into the universe trying to figure out whether there is life elsewhere
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,
but why do we think that water is necessary for life
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Water has the highest cohesion of any nonmetallic liquid
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cohesion is the attraction between two
like things, like attraction between one molecule of water and another of water
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These properties lead to one
of my favorite things about water [UNK] the fact that it can defy gravity
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hydrogen gas as a distinct substance and to
determine the composition of water
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Biological Molecules:
We're going to talk about the three most important molecules on the Earth
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they are essential sources of
energy and the means of storing that energy
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and he was the first
to discover that our stomachs contained hydrochloric acid
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in the presence
of water, urea gives off ammonia, which is why your Pee smells
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in plants
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it's just a bunch of glucose molecules bound
together
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cows can do it,, but humans certainly can't
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bread is made up of starch, the most simple of which is called amylose
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plant cells also have a cell wall that
is made of cellulose, which is why plants can't dance
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plants have a rigid cell membrane that
protects them from evolving complicated nerve structures and muscle cells
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it 's more like a city than a monk's cell
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All the things a booming metropolis needs to run smoothly
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Circa 1938
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the cytoplasm provides
the infrastructure necessary for all of the organelles to do all of their
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The endoplasmic reticulum or Er is a network of membranes that carry stuff around
the cell
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the rough er looks bumpy
because it has ribosomes attached to it, and the smooth Er does n't, so it 's a smooth network of
tubes

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