Unit Test card deck Flashcards
what are the elements of the body?
Carbon, Hydrogen, Oxygen, Nitrogen
what percent of the body do C,H,O,N make up
96%
Inorganic compounds do not contain
carbon (except CO2, CO)
Organic Compounds
Contain carbon (and hydrogen)
what type of bonds does carbon form
Covalent bonds
what are the forms of single double and triple bonds
C-C, C=C, C=_C
define polymerization
process by which large molecules are formed by joining together small molecules
Monomer definition
small molecule (single building block of a polymer)
Polymer definition
large molecule (made from adding monomers together)
Marcomolecule definition
very large polymers
What are the four main biomolecules in the body
Carbohydrates
Lipids (Fat and Cholesterol)
Proteins
Nucleic Acids (DNA and RNA)
What is the main function of carbs
Short term energy
Ratio of Carbohydrates
C,H,O in a 1:2:1 ratio (CHO with a HO in a 2 to 1 ratio)
Carbohydrates are hydrated carbon. Every Carbon atom has an H2O attached in the form of H and an -OH
Monosacchrides are also known as
Simple sugars (The monomers)
Glucose =
blood sugar
Fructose =
fruit sugar
Isomers
Chemical compounds made of the same kind and number of atoms, but are bonded differently.
Same atoms, put together in a different way
If carbon is shown without surrounding atoms, what can you assume is surrounding the carbon?
Hydrogen
Disaccharides
2 monosaccharides joined together
Sucrose (Table Sugar) =
Glucose + Fructose
Maltose=
Glucose + Glucose
Lactose =
Glucose + Galactose
Oligosaccharides definition
A few monosaccharides covalently linked
where are Oligosaccharides found?
attached to proteins or lipids
Example of oligosaccharides found on the outside of cells
Glycoproteins and Glycolipids are found on the outside of the cells. They help with cell to cell interactions and cell signaling.
Polysaccharides
long chains of monosaccharides and or disaccharides joined together. Chains may form branches
Polysaccharides are the main way humans store what
Sugar (glucose)
Examples of polusaccharides
Starch, Glycogen, Cellulose
Plants store excess sugar in what form
starch (aka Amylose)
foods that contain a great deal of starch are
potatoes, pasta, bread
What form do animals store excess sugars in
Glycogen
Where is glycogen stored
liver and muscles
you try to make a warehouse of this polysaccharide when you start carboloading
glycogen
This polysaccharide is found only in plants
Cellulose
cellulose is indigestible and so is also known as
Fiber
Why do we eat fiber if we cant digest it
It is natures intestinal scrub brush. Keeps things moving in your digestive system, good for the bacteria in your digestive system.
why can’t you digest cellulose
we don’t have an enzyme to break beta bonds between the glucose molecules
ranking of carbohydrates based on their ability to be converted to glucose in the body
Glycemic Index
Dehydration synthesis
When two monosaccharides are joined together to form a disaccharide a molecule of water is lost.
You lose a H off of one monomer and a OH off of a second monomer.
How are carbohydrates made and broken down?
Made by Dehydration synthesis (lose a water to put two monomers together). AKA Condensation reaction
Broken down by Hydrolysis (add a water back in…the reverse of dehydration synthesis).
To break a disaccharide down into monosaccharides what molecule must be added
A molecule of water (H2O)
Carbon can form what types of structures
long chains, branched chains, and rings
Which polysaccharides are used for storage?
Starch and glycogen
Which polysaccharide is used for structure?
Cellulose
What does having a low glycemic index mean
smaller rise in blood sugar following meals.
What are some of the benefits of a low glycemic index diet?
weight loss improve sensitivity to insulin help control diabetes keep you feeling fuller longer help prolong physical endurance re-fuel carbohydrate stores after exerciese
3 functions of lipids
store long term energy, form cell membranes, used as messengers in the body(hormones)
what lipids are found in the body
triglycerides, phospholipids, steriods
what are triglycerides made of
3 fatty acids and a glycerol
what is lost when glycerol combines with fatty acids
water
what are the types of fatty acids
saturates, monounsaturated, polyunsaturated
what are properties of saturated fatty acids
every carbon atom has a hydrogen attached to it, no c=c double bonds
what are properties of monounsaturated fatty acids
have 2 less hydrogens and only 1 c=c double bond
what are the properties of polyunsaturated fatty acids
have the least number of hydrogens and many c=c double bonds
fats are what at room temp
solid
fats are produced from what
mostly animals
are fats saturated or unsaturated
saturated
oils are what at room temp
liquid
oils are made from what
plants
are oils saturated or unsaturated
unsaturated
what are the functions of proteins
make up tissues and organs
amino acids are what of protein
the building blocks of protein
what 4 groups are amino acids made of
central carbon, r group, amine group, carboxyl group
how many different r groups are there
20
what is a polypeptide
a long chain of amino acids
what type of bond is formed between amino acids
peptide bonds
what is an enzyme
a protein that acts as a catalyst
what are characteristics of enzymes
lower activation energy, are very specific, have active sites to allow for binding
what are characteristics of nucleic acids
are the information molecules of the cell, also known as molecules of inheritance, make up genes, there are 2 types, DNA, RNA
what are nucleic acids made from
monomers called nucleotides
what are the 3 parts they are made of
phosphate group, nitrogen base, 5 carbon sugar
Bad cholesterol (sticks to walls of arteries)
LDL
Good Cholesterol (frees LDL and returns it to the blood stream)
HDL
Polar molecules have oppositely charged ______?
ends
what is specific heat
water retains heat, it is slow to cool down, and slow to heat up
water is the universal _____?
solvent
what sharing does a nonpolar covalent bond have
equal sharing
what sharing does a polar covalent bond have
unequal sharing
Primary Structure
Sequence of a chain of amino acids (number and sequence)
Secondary Structure
Sequence linked by hydrogen bonds, alpha helices and pleated sheets
Tertiary Protein Structure
Occurs between attractions in R group
Quaternary Structure
consists of more than one amino acid chain (folded over on itself)