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chpt 6 study

what do enzymes lower? they lower the energy it takes to start reaction ( ACTIVATION SITE)
what is a substrate? molecules being changed.
what is the active site? place on the enzyme where it attacks to the substrate.
what is a nucleic acid? DNA and RNA
what do nucleic acids have? they have long chains of nucleotides.
what do nucleotides consist of ? they consist of sugar, phosphate, nitrogen base.
What is important to about DNA? DNA is the instructions to make all of an organisms protein.
what type of ions do acids release? releases H+ ions.
what type of ions do bases release? releases OH- ions
what is the main role of a buffer? they are chemicals that some cells release that helps keep pH in specific range.
what is the range buffers keep for most bodily fluids? 6.5 to 7.5 for most bodily fluids.
what is a property of water ? its polar, stabilizes body temp. ,and fluid medium.
what is polar? good at dissolving substances.
what is fluid medium? allows molecules to flow.
In an Ion if the e- and p+ are unequal what happens to the atom? the atom will have an overall charge .
what is an element? substances that can't be seperated into simpler substances.
what are important elements? carbon, hydrogen, oxygen, nitrogen.
what are saturated fats ? single bonds only.
what type of fats are they? animal fats which means they are harder to break down.
what are saturated fats ? they are double bonds and are in plants.
what are the functions in lipids? they provide insulation,protective coating, energy storage,and the main component of cell membrane. they are also non-polar.
what can you call the lipid backbone? glycerol.
what can you call lipid tails? fatty acids.
what happens if you want to build polymers? you remove water which you do by when you link together two molecules which is called condensation.
what happens if you want to break down polymers ? you add water which breaks bonds between molecules which is called hydrolysis.
what is starch? long- term energy for plants and we use it for energy.
what is glycogen? long-term energy source for mammals and is stored in the liver.
what is cellulose? its a cell wall and structural support for plants.
what are pigments in a protein? they give your eyes,hair,skin and blood color. they also protect you from the sun.
what are functions in a protein? they have antibodies,tissue and muscle structure and hormones.
what are proteins? long chain of amino acids
what do AA's cause? the order of AA's cause the protein to fold in a specific shape. it also determines what it does.
Created by: carolyn_804



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