Biology unit 2

woods madeleine
Flashcards by woods madeleine, updated more than 1 year ago
woods madeleine
Created by woods madeleine over 7 years ago


Flashcards on Biology unit 2, created by woods madeleine on 11/14/2013.

Resource summary

Question Answer
activation energy energy needed to change potential energy into kinetic
amino acid nitrogenous building blocks of protein molecules
what kind of compound is a carbohydrate? organic
what 3 elements do carbohydrates contain? oxygen, hydrogen and carbon
starch is.....? carbohydrate
what is the monomer of carbohydrates? glucose
chemical energy form of potential energy stored in chemical bonds
dehydration synthesis formation of complex organic compounds in which water is given off
dissacharide sugar made of 2 simple sugar molecules
enzyme- lipid, protein, carb? protein
lipids made of what? 3 fatty acids + 1 glycerol
enzyme=catasyt=? speeds up processes
enzyme characteristics 1)speeds up reactions 2)1 specific reaction 3)never used up in reaction 4)protein, amino acids 5)lowers activation energy required for chmical reaction
enzyme suffix ase
potenial energy stored
kinetic energy motion
conservation energy in chemical reactions, neither created nor destroyed (transformed)
enzyme changes and conforms to the...? substance
condensation reaction small molecules join to create large molecules
nucleic acids found where? in the nucleus
ionic bond attraction of ions balanced in order to be neutral
covalent bond combine by sharing electrons
DNA? genetic code
RNA? copies DNA instructions to produce protiens
Nucleic Acid role organism's code
atoms building blocks of nature
element made of one type of atom
atomic number number of protons
compound combo of 2+ atoms of different elements joined by chemical bond
molecule 2 atoms joined by covalent bond
physical properties characteristics of matter
chemical properties how matter behaves with other elements/compounds
chemical change new substance with new properties formed
law of conservation of mass mass is neither created nor destroyed (chemical equations must be balanced= numbers of atoms on both sides af the arrows must be equal
solutions mixture that are the same throughout but have variable composition
bases pH above 7
acids pH below 7
organic chemestry contains carbon
inorganic chemestry no carbon, except CO2, not produced by living things
structural formula states kinds, # of atoms, arrangement
isomers same chemical formula but different structural formula + properties
carbohydrates elements carbon, hydrogen, oxygen (2 H:1 O)
carbohydrate role quick energy cell structers
Monosaccharide - 1 sugar - glucose, fructose - Benedicts=orange/red
Disaccharide - 2 sugars - sucrose, lactose, maltose - Benedicts= no change, light blue
Polysaccharide - many sugars - starch, glycogen, cellulose - Iodine test= inky blue
Lipid Elements carbon, hydrogen, oxygen (more H than O)
Lipid Types fats= animal (solid) oils= plant (liquid) waxes= plant/animal
Lipid Role stored energy, cell membrane
Lipid Groups carboxyl(-COOH) R(long chains of C-H)
Fatty Acid Types Unsaturated Saturated
Saturated single covalent bonds- bad
Unsaturated double covalent bonds- healthy
Protein Elements carbon, hydrogen, oxygen, nitrogen, sulfur
Protein Roles (4) 1)build living material (muscle) 2)enzymes 4 chemical reactions 3)fight diseases 4)transport particle in/out of cells
Protein Structure Amino Acids (3 groups) Shape
Protein Groups carboxyl, amino acid, r
denatured protein changed shape andbecomes inactive (pH, temp.) (enzynme)
polypeptide large molecule made of amino acids linked by peptide bonds
peptide bond carbon-nitrogen bond linking amino acids to form polypeptides
substrate substances enzymes cause to react
active site enzyme's surface does not exactly fit substrate shape so enzyme is like flexible key (slight change to fit substrate)
hydrolysis large molecules converted to smaller ones by reverse condensation, addition of water
peptide amino acids bonded together
dipeptide 2 amino acids link
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