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Chemistry Comes Alive Part B
Week 2 of Physiology 01 Khollesi
24
Physiology
Undergraduate 2
02/23/2015

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Term
What is it called when molecules contain carbon, large, and covalently bonded?
Definition
anything that contains carbon, large, and covalently bonded is considered organic
Term
what is inorganic compounds?
Definition
inorganic is when there is no carbon such as water, salts,
Term
give me properties of water
Definition
Water has high heat capacity - it takes a long time for it change temperature. For example, the pool on a hot day will still be warm at night.
high heat of vaporization - it takes a lot of heat from liquid to gas
polar solvent properties - dissolves ionic substances, forms hydration layers around large charged molecules, and serves as the bodys major transport medium.
Term
give me more properties of water
Definition
reactivity - is an important part of hydrolysis and dehydration synthesis
cushioning - resilient cushioning of certain parts of the bodies organs
Term
what contributes to acid and bases?
Definition
acid releases hydrogen ions so the more hydrogen ions the more acidic
bases is hydroxoly ions , the higher hydroxoly ion, the more basitic
Term
how is the ph scale
Definition
0-6.9 is acidic
7 is neutral
7.01 - 14 is bases
Term
what are buffers?
Definition
resist a change in large system of ph change of body fluids. For example, drinking alcohol is acidic and homeostasis.
Term
what are the four organic compounds?
Definition
carbohydrates, lipids, protein, and fat. because they have carbon which is unique in living systems
Term
give me properties of carbohydrates
Definition
contains carbon, hydrogen and oxygen. major function is to supply a source of cellular food. examples would be monosaccharides and simple sugars, dissacharides, polysaccharides
Term
give me properties of lipids
Definition
contains carbon, hydrogen, but less oxygen compared to carbohydrates. examples would be neutral fats or triglycerides, phospholipids
Term
why do we need acidity?
Definition
Because it helps kill bacteria in the intenstines and pathogens
Term
What does dehydration synthesis do?
Definition
Makes a larger molecule
Term
what other lipids do we have?
Definition
Phospholipids - modified trygycerides with two fatty acid groups and a phosphorus group. making membrane of our cells.
Term
what is hydrophillic and hydrophobic?
Definition
hydrophillic loves water and hydrophobic hates water
Term
what are steroids?
Definition
steroids are flat molecules with four interlocking hydrocarbon rings. Things like cholestrol
Term
what lipids are found in the body?
Definition
neutral fats - found in subcutaneous tissues and around organs
phospholipids - chief component of cell membranes
steroids - cholestrol, sex hormones and adrenal corticol hormones
fat soluble vitamins - vitamin a, d, e and k
lipoproteins - transport fatty acids and cholesterol in the bloodstream
Term
what are amino acids?
Definition
building blocks of protein, containing an amino group and a carboxyl group.
amino acid structure
Term
How many types of amino acids are there?
Definition
20 types
Term
Name the structural levels of protein
Definition
primary - amino acid sequence(peptide bonds only, single)
secondary - alpha helices(peptide bonds and hydrogen bonds)
tertiary - superimposed folding of secondary structures(peptide bonds, hydrogen bonds and other bonds)
quaternary - polypeptide chains linked togheter in a specific manner
Term
what are fibrous and globular proteins?
Definition
fibrous proteins are extranded and strandlike proteins. examples would be keratin, elastin, collagen
globular proteins would be compact, spherical with tertiary and quaternary structures.
examples are antibodies, hormones and enzymes
Term
what is protein denutaration?
Definition
protein denuatration is the reversible unfolding of protein due to drops in ph or increased temperature but irreversible if the temperatures are extreme
Term
give me the characteristic of enzymes
Definition
most are globular proteins made of holoenzymes that consist of apoenzyme and a cofactor(usually an ion)
they are chemically specific and most end with an ase
Term
what is the mechanism of enzymes?
Definition
they have low activation energy and enymzes bind with substrate
Term
what are nucleic acids composed of and name the fie nitrogen bases.
Definition
composed of carbon, oxygen, nitrogen, and phosphorus
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