Title: Chemistry of Life
1Chemistry of Life
2Levels of Chemical Organization
- Atoms
- Nucleus- central core of atom
- Proton- charged particle in nucleus
- Neutron- non-charged particle in nucleus
- Atomic number- number of protons in the nucleus
determines the type of atom - Atomic mass- number of protons and neutrons
combined
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4Levels of Chemical Organization
- Atoms
- Energy levels- regions surrounding atomic nucleus
that contain electrons - Electron- negatively charged particle
- May contain up to eight electrons per level
- Energy increases with distance from nucleus
5- An ELECTRONS ENERGY LEVEL is the amount of
energy required by an electron to stay in orbit.
Just by the electrons motion alone, it has
kinetic energy. The electrons position in
reference to the nucleus gives it potential
energy.
6- An energy balance keeps the electron in orbit and
as it gains or loses energy, it assumes an orbit
further from or closer to the center of the atom.
SHELLS and SUBSHELLS are the orbits of the
electrons in an atom.
7- Shells are lettered K through Q, starting with K,
which is the closest to the nucleus. The shell
can also be split into four subshells labeled s,
p, d, and f, which can contain 2, 6, 10, and 14
electrons, respectively.
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9Elements, molecules, and compounds
- Element- a pure substance, made up of only one
kind of atom - Molecule- a group of atoms bound together in a
group - Compound- substances whose molecules have more
than one kind of atom
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11Elements
- Co Cobalt
- Cn Copernicium
- Cr Chromium
- Cs Cesium
- Cu Copper
- Db Dubnium
- Ds Darmstadtium
- Dy Dysprosium
- Er Erbium
- Es Einsteinium
- Eu Europium
- F Fluorine
- Fe Iron
- Fm Fermium
- Fr Francium
- Ga Gallium
- Gd Gadolinium
- Ge Germanium
- H Hydrogen
- He Helium
- Hf Hafnium
- Hg Mercury
12Elements
- Ac Actinium
- Ag Silver
- Al Aluminum
- Am Americium
- Ar Argon
- As Arsenic
- At Astatine
- Au Gold
- B Boron
- Ba Barium
- Be Beryllium
- Bh Bohrium
- Bi Bismuth
- Bk Berkelium
- Br Bromine
- C Carbon
- Ca Calcium
- Cd Cadmium
- Ce Cerium
- Cf Californium
- Cl Chlorine
- Cm Curium
13Elements
- Ho Holmium
- Hs Hassium
- I Iodine
- In Indium
- Ir Iridium
- K Potassium
- Kr Krypton
- La Lanthanum
- Li Lithium
- Lr Lawrencium
- Lu Lutetium
- Md Mendelevium
- Mg Magnesium
- Mn Manganese
- Mo Molybdenum
- Mt Meitnerium
- N Nitrogen
- Na Sodium
- Nb Niobium
- Nd Neodymium
- Ne Neon
- Ni Nickel
14Elements
- No Nobelium
- Np Neptunium
- O Oxygen
- Os Osmium
- P Phosphorus
- Pa Protactinium
- Pb Lead
- Pd Palladium
- Pm Promethium
- Po Polonium
- Pr Praseodymium
- Pt Platinum
- Pu Plutonium
- Ra Radium
- Rb Rubidium
- Re Rhenium
- Rf Rutherfordium
- Rg Roentgenium
- Rh Rhodium
- Rn Radon
- Ru Ruthenium
- S Sulfur
15Elements
- Sb Antimony
- Sc Scandium
- Se Selenium
- Sg Seaborgium
- Si Silicon
- Sm Samarium
- Sn Tin
- Sr Strontium
- Ta Tantalum
- Tb Terbium
- Tc Technetium
- Te Tellurium
- Th Thorium
- Ti Titanium
- Tl Thallium
- Tm Thulium
- U Uranium
- Uuh Ununhexium
- Uun Ununnilium
- Uuo Ununoctium
- Uup Ununpentium
- Uuq Ununquadium
16Elements
- Uus Ununseptium
- Uut Ununtrium
- Uuu Ununumium
- V Vanadium
- W Tungsten
- Xe Xenon
- Y Yttrium
- Yb Ytterbium
- Zn Zinc
- Zr Zirconium
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18Chemical Elements of the Human Body
- Oxygen
- Carbon
- Hydrogen
- Nitrogen
- Calcium
- Phosphorus
19Elements Crucial to Human Health
- Chemical elements are crucial to our health.
Although there are more in the body, these are
the elements that we can most quickly impact in a
positive way.
20 The Elements (based on an average 160-pound
man)
- Element Weight
- Oxygen 90 pounds
- Carbon 36 pounds
- Hydrogen 14 pounds
- Calcium 3 pounds 12 ounces
- Nitrogen 3 pounds 8 ounces
- Phosphorus 1 pound 4 ounces
- Chlorine 4 ounces
- Sulphur 3 ½ ounces
- Potassium 3 ounces
- Sodium 2 ½ ounces
- Fluorine 2 ounces
- Magnesium 1 ½ ounces
- Silicon ¼ ounce
- Iron 1/6 ounce
- Iodine Trace
- Manganese Trace
21Calcium- The Knitter
- Calcium Ca(1.5) is the most common mineral in
the human body nearly all of it found in bones
and teeth. Ironically, calcium's most important
role is in bodily functions, such as muscle
contraction and protein regulation. In fact, the
body will actually pull calcium from bones
(causing problems like osteoporosis) if there's
not enough of the element in a person's diet. - Calcium is an alkaline, positive mineral that
attracts oxygen. It must undergo an evolution to
travel from rock form to a form that can be
assimilated by the human body. It is through
vegetable and animal form and their mineral
content that calcium is converted to blood and
bone. - In the body, it aids digestion, nutrition and
neutralization. Calcium promotes good growth,
vitality and vigor by helping to regulate
metabolism. It also causes coagulation of the
blood and thus aids in clotting for healthy
healing
22Calcium- The Knitter
- Symptoms on the skin of calcium deficiency are
itchy skin, wrinkles and burns that heal poorly
or slowly. Calcium can aid in conditions of
rosacea, acne, psoriasis, impetigo (a very
contagious infection of the skin common in
children localized redness develops into small
blisters that gradually crust and erode), prurigo
(eruption of pale, dome-shaped papules that itch
severely) and ichthyosis (A congenital, often
hereditary skin disease characterized by dry,
thickened, scaly skin. Also called alligator
skin, fish skin, fishskin disease, ichthyosis
sauroderma). - Foods rich in calcium are almonds, agar,
avocados, barley, brazil nuts, blackstrap
molasses, carrots, buckwheat, cauliflower, figs,
egg yolk, Irish moss, kelp, lentils, goat milk,
parsnips, rice polishing, veal joint broth/jelly.
23Other important and interesting calcium facts
- .
- Most abundant element found in water, ash of
plants and all soils. - One of the most important biochemical elements
needed in human nutrition. - Must undergo evolution from rock form to
plant/animal form to be assimilated. - Contained in hard tissues of the body.
- Lends strength to arteries and veins all
muscles.
24Other important and interesting calcium facts
- Aids digestion, nutrition, neutralization.
- Regulates metabolism.
- Calcium imbalance is the beginning of chronic
disease. - Menstrual disorders increased calcium to
overcome excessive flow menstrual blood
contains 40X the calcium of regular blood. - Sugar intake depletes supply.
- Pellagra calcium deficiency.
25Other important and interesting calcium facts
- Milk deficiency in mothers turnip greens, green
kale for calcium. - Proven to make eggshells harder.
- Excess calcium hardening, bony growths,
rheumatoid arthritis, joint stiffness (to combat
excess wild strawberries, goat milk, raw egg
yolk tonics, okra, celery). - Deficient calcium lungs affected, growths,
tumors, sores, abscesses, fevers, inflammations,
deformities.
26Carbon- The Builder
- Carbon C (18) is synonymous with life. Its
central role is due to the fact that it has four
bonding sites that allow for the building of
long, complex chains of molecules. Moreover,
carbon bonds can be formed and broken with a
modest amount of energy, allowing for the dynamic
organic chemistry that goes on in our cells. - Carbon is the basic factor of cell birth and cell
life, the cradle of creation and principal
element in growth. Carbon supports our vital
systems. Carbon is found in all carbohydrates. - Excess carbon in the body can manifest by anemia,
obesity (adipose), diabetes, restlessness,
laziness, boils, high blood pressure, low sex
drive and acidity. Carbon deficiency may manifest
as negativity, remoteness, and melancholy. - Foods high in carbon sugars, most proteins,
starches, grains/breads, fats, sweet fruits.
27Chlorine- The Laundryman
- Chlorine Cl (0.15) is usually found in the body
as a negative ion, called chloride. This
electrolyte is important for maintaining a normal
balance of fluids. - Chlorine is an organic salt that helps eliminate
tissue congestion from the body, so new nutrients
can be used to build and reinforce our systems.
It is a germicide and, together with sodium,
slows blood clotting and aids in keeping blood
albumin, fibrin and casein, in solution. Our
bones, nerves, sex glands, sweat glands and liver
need chlorine, with a primary focus on building
strong joints. - Protein in the urine and insufficient oxygen
intake due to malformed re corpuscles will be
evident if chorine (sodium chloride) is lacking
in your system. - Foods that are high in chlorine are avocado,
banana, bass, beef, beets, whole wheat bread,
butter, buttermilk, casaba, celery, chicken,
chicory, dry dates, egg yolk, lamb.
28Cobalt- The Proteinizer
- Cobalt (0.0000021) is contained in vitamin B12,
which is important in protein formation and DNA
regulation.
29Copper- The Giver
- Copper (0.0001) is important as an electron
donor in various biological reactions. Without
enough copper, iron won't work properly in the
body.
30Flourine- The Resister
- Fluorine (0.0037) is found in teeth and bones.
Fluorine reinforces calcium, preventing tooth
decay. It keeps the sinus walls healthy and
balances oxygen. - In cases of fluorine depletion, the hair, corneal
structures, nails, beard and skin are adversely
affected. Indications may be sweaty, clammy feet,
sticky eyelids, as well as numerous and painful
boils and corns. - Foods that are high in fluorine are black-eyed
peas, goat buttermilk, goat butter, goat whey,
spinach, tomatoes, cheese, cabbage, and parsley.
31Chromium- The Matchmaker
- Chromium (0.0000024) helps regulate sugar levels
by interacting with insulin, but the exact
mechanism is still not completely understood.
32Hydrogen- The Moisturizer
- Water is 11 hydrogen. The human body is 70
water, the ocean that is human life. Hydrogen
moisturizes tissue, transports nutrients,
promotes elimination by irrigation of cells and
organs, regulates temperature, prevents
inflammation and soothes the nerves. - With an excess of hydrogen, it would make sense
that there would be an issue with edema or
fluid-type body. Symptoms and/or attributes may
include sluggishness, even temperament,
compassion, weakness and exhaustion. Lack of
hydrogen may create dehydration, appetite for
salty foods, dry skin, excess body heat,
arthritis, leanness and irritability. - Foods high in hydrogen are fruit and vegetable
juices, broths, kefir, water, citrus fruits,
milk, whey, cherries, cabbage, carrots, celery,
pineapple, watercress, watermelon.
33Iodine- The Metabolizer
- Iodine (0.000016) is required for making of
thyroid hormones, which regulate metabolic rate
and other cellular functions. Iodine deficiency,
which can lead to goiter and brain damage, is an
important health problem throughout much of the
world. - Iodine is vital in rebuilding new tissue in the
body silicon and The thyroid, our emotion
gland, as well as the liver, spleen, uterus,
heart lining and lymphatic system are all greatly
dependent on the intake of iodine. The metabolism
of calcium, fluorine and many other elements are
aided with iodine. - Foods that are high in iodine are agar,
artichokes, asparagus, beans, Brussels sprouts,
cardamom, carrots, chives, coconut, eggplant,
kale kelp, dulse leaf, lettuce, loganberries,
mustard greens, oats, okra, onions, oysters,
pike, tofu, spinach, squash, strawberries, tuna,
turnip greens, watercress.
34Iron The Energizer
- Iron (0.006) Fe is a key element in the
metabolism of almost all living organisms. It is
also found in hemoglobin, which is the oxygen
carrier in red blood cells. Half of women don't
get enough iron in their diet. - Iron works in conjunction with oxygen in the
human body. It attracts oxygen, promoting
vitality, tissue oxidation, circulatory
stimulation, digestion, elimination and
respiration. - High iron content in the body may result in
excess blood pressure, heaviness of the senses
and lethargy. Iron deficiency is more common and
manifest in anemia, poor respiration, low vital
force, and low blood pressure. - The highest iron foods are sea vegetation
(dulse, kelp, Irish moss), unsulphured dried
fruits, black cherries, greens and liquid
chlorophyll.
35Magnesium The Relaxer
- Magnesium Mg (0.05) plays an important role in
the structure of the skeleton and muscles. It
also is necessary in more than 300 essential
metabolic reactions. - Magnesium works with calcium to calm nerves,
promote sleep and is vital for teeth and bone
strength, cell growth, tissue elasticity, and
lowers fever. - Excessive content of magnesium in the body can
create numbness, apathy, sluggishness, slowed
perception and poor memory. A low amount of
magnesium may result in insomnia, headache, stiff
muscles, hot temper, forgetfulness and mood
shifts. - Foods high in magnesium wheat germ, greens,
yellow cornmeal, nuts and berries.
36Manganese
- Manganese (0.000017) is essential for certain
enzymes, in particular those that protect
mitochondria the place where usable energy is
generated inside cells from dangerous oxidants.
- Manganese is strong, resilient and increases
resistance. It assists in controlling nervous
tension, enhances intellect and coordinates
thought and action. - Those who may have manganese excess will exhibit
exaggerated emotion, although excess is very
rare. Manganese deficiency may cause impatience,
anxiety, nightmares, anger, depression, swollen
glands, aversion to being touched, gout symptoms,
cracking joints and reduced appetite. - Foods high in manganese nuts and seeds
37Molybdenum- The Transformer
- Molybdenum (0.000013) is essential to virtually
all life forms. In humans, it is important for
transforming sulfur into a usable form. In
nitrogen-fixing bacteria, it is important for
transforming nitrogen into a usable form.
38Nitrogen The Restrainer
- Nitrogen (3) is found in many organic molecules,
including the amino acids that make up proteins,
and the nucleic acids that make up DNA. - Nitrogen is found in elastic and connective
tissue, hair, nails, skin and body fluids and is
essential for metabolism. Bodies with high levels
of nitrogen may be slow healing with lowered
immune systems, suffer from drowsiness,
forgetfulness and low heat generation. - Deficiency in the nitrogen element may cause
fatigue, muscular and tendon cramping and
weakness, danger of blood clots, and volatility
in personality. - High protein foods are those that will assist the
low nitrogen personality therefore, a decrease
in high protein foods will assist a high nitrogen
personality. - Foods high in nitrogen are fish, spices, nuts,
pasta, cheese, beans, poultry, lamb, lentils and
spirulina.
39Oxygen The Giver Of Life
- Oxygen O (65) and hydrogen (10) are
predominantly found in water, which makes up
about 60 percent of the body by weight. It's
practically impossible to imagine life without
water. - Heat production and physical and mental healthy
are attributes of oxygen. Metabolism and
regeneration are reinforced by an uptake of
oxygen. Oxygen acts toward anabolism as well as
catabolism. Think of recycling. All must return
to nature, and disintegration is only complete
with regeneration. The oxygen cycle has no
beginning and no end. - High oxygen types produce and excess of heat
causing heat flushes, red face and neck toward
evening, the lumbar region of the back my feel
cool or numb, pain under the scapula,
glucose-producing foods may cause colic and the
skin may show symptoms of dermatitis. Salty foods
and milk products are good for excessive oxygen
types. Low oxygen types show symptoms of nervous
irritability, energy decrease, poor digestion and
the skin may flake and/or become scaly with blue
undertones. - The highest oxygen foods are beefs, blueberries,
bone broth, fish, goat milk, nuts and seeds,
onions, radishes, sea vegetation, spinach,
tomatoes and turtle. As a general rule, foods
that are high in iron are also high oxygen foods.
40Phosphorus The Light Bearer
- Phosphorus Ph (1) is found predominantly in bone
but also in the molecule ATP, which provides
energy in cells for driving chemical reactions. - Phosphorus improves nerve nutrition, is an agent
for growth, necessary for reproduction, present
in white blood cells, and stimulates intellect.
Phosphorus from vegetable sources affects the
bones and phosphorus from animal sources affects
the brain and nervous system. - Phosphorus excess may cause volatile emotions,
tissue degeneration, progressive emaciation, and
exaggerated confidence. Those lacking in
phosphorus will show signs of neuralgia, fear,
lack of confidence, sensitivity to criticism and
slow oxygen uptake. - Foods high in phosphorus are for the nervous
system/brain fish, meat, egg yolk, and dairy
products for the bones lentils, soybeans,
almonds, pumpkin seeds, and sunflower seeds.
41Potassium The Alkalizer
- Potassium K (0.25) is an important electrolyte
(meaning it carries a charge in solution). It
helps regulate the heartbeat and is vital for
electrical signaling in nerves. - Potassium assists in recuperative powers.
Potassium and sodium work together in all cells
of the body, including the nerve synapse, to
maintain membrane potentials and to assist in
metabolic processes. Potassium has a draining
effect on the body to favor good kidney action.
Potassium is analgesic and neutralizes acidity in
all parts of the body therefore, lack of
potassium will cause acidity and skin eruptions.
Acidity will show physical evidence in the form
of goose pimple-type skin on the upper arms and
thighs. - Potassium assists with ulcers, gangrene,
cutaneous skin ailments, ingrown toenails, as
well as improvement in the assimilation of
albumin, casein and fibrin. When potassium and
other alkaline salts are high in the blood,
injuries heal quicker. - Foods high in potassium apples, anise, apricots,
bananas, black cherries, blueberries, Jerusalem
artichokes, fish, kale, kelp, lentils, lima
beans, wheat germ, and watercress.
42Selenium- The Catalyst
- Selenium (0.000019) is essential for certain
enzymes, including several anti-oxidants. Unlike
animals, plants do not appear to require selenium
for survival, but they do absorb it, so there are
several cases of selenium poisoning from eating
plants grown in selenium-rich soils.
43Silicon The Magnetic Element
- Silicon provides elasticity, as well as helping
the body become more alkaline. It has great
effect on our membranous tissues and is
beneficial for the nerves, the bowel walls, the
alimentary tract and the lungs. - Symptoms of silicon depletion can be a drying
up of the skin, exc3ess mucous production
literally avenues of elimination are closed. - Foods rich in silicon are oats, barley, apples,
bananas, beets, dates, kelp, brown rice and rice
polishings.
44Other important and interesting silicon facts
- Magnetic comes from a city Magnesia in Thessaly.
Magnet, magnesia, magnetism have the same root.
Traced further back to magus, mach and the
Sanskrit word mahaji meaning great, learned,
wise. Others magi, magic, magician from this
Sanskrit word. Ancient priests, magis (Greats)
used magnesian stones in curing people. - Silica affects the tissues, bones and nerves.
- Alkaline so the brain and nervous system are
influenced making pulse more rhythmic. - Antiseptic protection.
45Other important and interesting silicon facts
- Flesh is firmer.
- Hair becomes shiny and abundant.
- A person with good quantities of silicon is
agile, lean, nimble, very active. - (Lack of) abscesses, brooding and hopelessness,
broods over ethics and principles which are
trivial to others, becomes agitated,
argumentative and ungratified, sense of
perception is chaotic, feelings are
hypersensitive, drowsy from riding in
automobiles, buzzing in the ears, eyesight
deteriorates. - (Excess) inflexibility.
46Other important and interesting silicon facts
- Nations known for low cancer rates have a diet
high in silicon and formic acid. - Good for bruises, catarrh, tuberculosis and
tumors. - Autointoxication is prevented or reduced by
silicon. - Nicotine and drug habits are easier to overcome
with silicon. - Menstrual, ovarian and hysterical complications
need silicon. - Varicosities are reduced.
47Sodium The Youth Element
- Sodium Na (0.15) is another electrolyte that is
vital for electrical signaling in nerves. It also
regulates the amount of water in the body. - Sodium is alkaline and is found in most waters
and soils. Sodium acts on body fluids, organs,
connective tissue, liver, pancreas and spleen.
Provides alkalinity to the lymph and blood. - Sodium excess types are always in a rush and have
a tendency toward the extreme. Sodium deficiency
types may have dry skin, flaccid muscles,
offensive breath, cracking joints, difficulty
digesting sweets, starches and fats, and bloating
and fatigue. - Foods high in sodium veal joint broth, goat
milk, sea vegetation, black mission figs, dried
apricots, celery, parsley and collard greens.
48Other important and interesting sodium facts
- One gallon of ocean water contains approximately
4 oz. sea salt (rich in sodium). - Humidity in air attracts sodium.
- Inorganic sodium (iodized salt) is not compatible
with the body. - The sun a sodium star as viewed by Bernard
Jensen, ensures a high sodium content in mature
fruit. - Organic sodium keeps calcium in solution in the
human body. - Said to neutralize ulcers.
49Sulphur The Heater
- Sulfur (0.25) is found in two amino acids that
are important for giving proteins their shape. - Sulphur is the skins heating element and unites
with all metals. Its primary function is building
the skin, nail and hair. It also drives
impurities to the surface, thus beautifying the
complexion. Sulphur stimulates and regulates
nerve activity, egg and sperm production,
regulates brain heat and promotes flow of bile. - Symptoms of Sulphur deficiency are acne,
imbalance in sebum flow and weakened hair and
nails. - Foods rich in Sulphur are winter vegetables such
as kale, cabbage, Brussels sprouts, cauliflower,
horseradish, watercress, chervil and garlic.
50Zinc- The Protector
- Zinc (0.0032) is an essential trace element for
all forms of life. Several proteins contain
structures called "zinc fingers" help to regulate
genes. Zinc deficiency has been known to lead to
dwarfism in developing countries.
51Chemical Bonding
- Chemical bonds from to make atoms more stable
- Outermost energy level of each atom is full
- Atoms may share, or donate, or borrow them to
become stable.
52IONIC BONDS
- Ions form when an atom gains or loses electrons
in its outer energy level to become stable. - Positive ion- has lost electrons indicated by
superscript positive sign(s), as in Na, or Ca - Negative ion- has gained electrons indicated by
superscript negative sign(s), as in Cl-
53IONIC BONDS
- Ionic bonds form when positive and negative ions
attract each other because of electrical
attraction - Electrolytes are molecules that dissociate (break
apart) in water to form individual ions, also
known as free ions
54COVALENT BONDS
- Covalent bonds form when atoms share their outer
energy to fill up and thus become stable - Covalent bonds do not ordinarily easily
dissociate in water.
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56FIVE MAJOR GROUPS OF COMPOUNDS
- Carbohydrates- energy source, energy reserve, and
structure - Lipids- fats- structure and energy source
- Proteins- functional and structural
- Nucleotides- structural genetic
- Water- solvent, heat maintenance
57INORGANIC CHEMISTRY
- Inorganic molecules do not contain carbon-carbon
covalent bonds or carbon-hydrogen covalent bonds. - For example
- Water
- Some acids
- Some bases
- Some salts
58WATER CHEMICAL REACTIONS
- Dehydration synthesis- chemical reaction in which
water is removed from small molecules so they can
be strung together to form a larger molecule
59- Hydrolysis- chemical reaction in which water is
added to the subunits of a large molecule to
break it apart into smaller molecules
60- Chemical reactions always involve energy
transfers, as when energy is used to built ATP
molecules - Chemical equations show how reactants interact to
form products arrows separated the reactants
from the products
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62ACIDS, BASES, SALTS
- Water molecules dissociate to form equal amounts
of H (hydrogen ion) and OH- (hydroxide ion) - Acid- substance that shifts the H/OH- balance in
favor of the H opposite of the base - Base-substance that shifts the H/OH- balance
against H, also known as an alkaline opposite
of acid
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64pH
- pH- mathematical expression of the relative H
concentration in an aqueous solution
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67- Neutralization occurs when acids and bases mix
and form salts - Buffers are chemical systems that absorb excess
acids or bases and thus maintain a relatively
stable pH
68Organic Chemistry
- Organic molecules contain carbon-carbon covalent
bonds or carbon-hydrogen covalent bonds
69Carbohydrates
- Contain carbon(C), hydrogen(H), and oxygen(O).
- Made up of six-carbon subunits called
monosaccharides or single sugars (such as
glucose) - Disaccharide- double sugar made of two
monosaccharide units (sucrose, lactose)
70- Polysaccharide- complex charbohydrate made up of
many monosaccharide units (glycogen) - The function of carbohydrates is to store energy
for later use
71Lipids
- Lipids are fats and oils
- Triglycerides
- Are made up of one glycerol unit and three fatty
acids - Store energy for later use
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73- Phospholipids
- Are similar to triglyceride structure, expect
with only two fatty acids, and with a
phosphorus-containing group attached to glycerol - The head attracts water and the double tail does
not, forming a sable double layer in water. - Form membranes of cells
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76- Cholesterol
- Molecules have a steroid structure made up of
multiple rings - Cholesterol stabilizes the phospholipid tails in
cellular membranes and is also converted into
steroid hormones by the body
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79Proteins
- Proteins are very large molecules made up of
amino acids held together in long, folded chains
by peptide bonds - Structural proteins
- Form structures of the body
- Collagen in a fibrous protein that holds many
tissues together - Keratin forms touch, waterproof fibers in the
outer layer of skin
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81Proteins
- Functional proteins
- Participate in chemical processes (examples
hormones, cell membrane channels, receptors, and
enzymes) - Enzymes are
- Catalyst which help chemical reactions occur
- Lock-and-key model-each enzyme fits a particular
molecule that it acts on as a key fitting into a
lock
82Proteins
- Proteins can combine with other organic molecules
to form glycoprotein or lipoproteins
83Nucleic Acids
- Nucleic acids are made of nucleotide units
- Sugar (ribose or deoxyribose)
- Phosphate- nitrogen base (adenine, thymine, or
uracil, guanine, cytosine)
84DNA
- Deoxyribonucleic acid is used as the cells
master code for assembling proteins - Uses deoxyribose as the sugar and A,T,(not U), C,
and G as bases - Forms a double helix
85RNA
- Ribonucleic acid is used as the temporary
working copy of a gene - Uses ribose as the sugar and A, U, (not T), C,
and G as bases
86Nucleic Acids
- By directing the formation of structural and
functional proteins, nucleic acids ultimately
direct overall body structure and function