Notesale: Turn your study into money

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Carbon
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Learn about covalent
and ionic and hydrogen bonds
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It 's all contained
within [ Music ] Carbon is willing and interested to bond with lots of different
molecules like hydrogen, oxygen, phosphorus, nitrogen, or to other molecules of
carbon
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Life is entirely based
on this element
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The little Lewis dot structure
that we use to represent how atoms bond to each other is something that was
created by a troubled mad genius
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It's a tool that was thought
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Instead of sharing electrons atoms just completely wholeheartedly donate or accept
an electron from another atom and then live happily as a charged atom
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Most
common ionic compound in our daily lives is UH salt UH sodium chloride NaCl
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The strength of covalent bonds varies wildly
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Even the sexiest
person you have ever met in your life is just a collection of organic compounds
rambling around
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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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Cavendish only published about 20 papers, but also discovered the density of the
earth
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Cavendish had prediscovered Richter's Law, Ohm 's Law, Coulomb
'slaw, Cavendish 's 4th Law
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they become giant heat sinks that regulate the temperature and
climate of our planet
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It cools you down
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To the point that they break those hydrogen bonds and they
evaporate away
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Biological Molecules - You Are What You Eat: Crash
Course Biology #3
CrashCourse
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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This is because thei r
chemical bonds are mostly nonpolar, and since water despises non -polar
molecules, the two do not mix
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in fact,, it 's exactly like water
and water! And if you 've ever read a nutrition label or seen this thing called the
television, you're probably pretty conversant in the way we classify fats
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omega3 fatty
acids are unsaturated fatty acids that instead of kinking go straight across and so
they 're super bad for you
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steroids have a backbone of four interconnected
carbon rings and can be
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This is
the first time nitrogen has shown up in our food
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by eating foods that are high in protein, we can digest them
down into their base particles, and then use these essential amino acids in building
up our own protein
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go back and reinforce what you've learned today by going back and
watching bits that you feel like you may not have got completely
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Eukaryopolis - The City of Animal Cells: Crash Course
Biology #4
CrashCourse
Animals are made up of your runofthemill eukaryotic cells
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animals can
move around, find shelter and food, find things to mate with all that good stuff
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there is a whole lot going on inside of a
eukaryotic cell
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a city has defined
geographical limits, a ruling government, power plants, roads, waste treatment
plants, a police force, industry
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think fascist italy
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think Kim Jong-il's i mean, think Kim
Jongun 's North Korea
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Do all of their awesome business
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smooth Er acts as a kind of factorywarehouse in the cell city
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The nucleus is a highly specialized organelle that lives in its own
doublemembraned, highsecurity compound with its buddy
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The
nucleus makes the laws for the city and orders the other organelles around, telling
them how and when to grow, what to metabolize, what proteins to synthesize and
how to divide
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the mitochondria are smooth, oblong organelles where the amazing
and superimportant process of

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