AP Notes, Outlines, Study Guides, Vocabulary, Practice Exams and more!

Biochemistry Flashcards

Terms : Hide Images
6726197145What is an atom made of?Protons, neutrons and electrons0
6726197146What is the charge of an atom?Neutral because the number of protons and electrons are equal1
6726197147What is the charge of a proton?+2
6726197148What is the charge of an electron?-3
6726197149What is ground state?When all the electrons in the atom have the worst available energy levels4
6726197150What is it called when the electrons in the atom are at a high level of energy?Excited state5
6726197151What are isotopes?Atoms of one element that vary only in the number of neutrons in the nuclues6
6726197152Where are the neutrons and protons located?The nucleus7
6726197153Where are the electrons located?The electron clouds8
6726197154What is a half life?The time it takes from a radioactive isotope to decay in half9
6726197155What are radioactive isotopes called?Radioisotopes10
6726197156What can radioactive iodine be used for?Diagnose and treat thyroid diseases11
6726197157What is a tracer?A radioactive isotope that can be incorporated into the biological pathways to track the movement of certain elements12
6726197158What is released when a bond is formed?Energy13
6726197159What must be applied to break a bond?Energy14
6726197160What is an ionic bond?Electrons are transformed15
6726197161What is the atom that loses an electron called?Cation16
6726197162What is the ion that gains an electron called?Anion17
6726197163What is a covalent bond?Electrons are shared18
6726769531What is the structure created by a covalent bond called?A molecule19
6726769532What is the bond called if the electrons are shared equally?Nonpolar20
6726769533Where is this type of bond found?Diatomic molecules21
6726769534What is the bond called if the electron are not shared equally?Polar covalent bond22
6726769535What does hydrophilic mean?Will dissolve in water (polar) miscible23
6726769536What is water known as?The universal solvent24
6726769537What does hydrophobic mean?Does not dissolve in water (nonpolar) not miscible25
6726769538What is the plasma membrane made of?Phospholipid bilayer26
6726769539What can cross the plasma membrane?Nonpolar molecules27
6726769540Is water polar or nonpolar?Polar28
6726769541What has the negative charge in water?Oxygen29
6726769542What has the positive charge in water?Hydrogen30
6726769543What bond holds water together?Hydrogen bond31
6726769544Is a hydrogen bond strong or weak?Weak32
6726769545What does the high specific heat capacity of water do for the environment?It prevents large bodies of changing temperature drastically so the marine biome can survive33
6726769546What does the high heat of vaporization water do for humans?Evaporating water requires absorption of heat, so evaporation of sweat cools the body surface34
6726769547AdhesionThe attraction between water and another substance35
6726769548CohesionThe attraction between water molecules36
6726769549What does adhesion and cohesion allow?Transpirational-pull cohesion tension, capillary action and surface tension37
6726769550Is water less or more dense as a solid?Less dense which allows ice to float and is why marine life survives during the winter38
6726769551What is the spring overturn?When the ice melts the water becomes denser and sinks to the bottom causing the nutrients to be filtered to the top of the water39
6726769552What is pH?A measure of the acidity and alkalinity of a solution40
6726769553What is a ph of 7 considered?Neutral41
6726769554What is pH lower than 7 considered?Acidic42
6726769555What is a pH higher than 7 considered?Basic43
6726769556What is the difference between one pH level?Times 1044
6726769557What is the pH of human blood?7.445
6726769558What is the concentration of hydrogen at acidic?Higher46
6726769559What is the concentration. If hydrogen at basic?Lower47
6726769560What are buffers?Substances that prevent pH change48
6726769561What is the most important buffer in the human body?Bicarbonate ion49
6726769562What are isomers?Organic compounds that have the same molecular formula but different structure50
6726769563What are structural isomers?Differ in the arrangement of their atoms51
6726769564What are CIs-trans isomers?Differ only in the spatial arrangement around double bonds (less flexible than single bonds)52
6726769565What are enantiomers?Are molecules that are mirror images of each other (L and D versions)53
6726769566What are all living organisms made of?Organic compounds (carbon)54
6726769567What are the four types of organic molecules?Carbonhydrates, lipids, proteins, and nucleus acids55
6726769568What are carbohydrates used for in the body?Fuel and building materials56
6726769569What are monosaccharides?Glucose, galactose, and fructose57
6726769570What are disaccharides?Two monosaccharides58
6726769571How are disaccharides made?The removal of water called dehydration synthesis of condensation?59
6726769572Glucose + glucose =Maltose60
6726769573Glucose + galactose=Lactose61
6726769574Glucose +fructose=Sucrose62
6726769575What is hydrolysis?The breakdown of a compound by adding water63
6726769576What are polysaccharides?Macromolecules of monosaccharides64
6726769577What polysaccharides are used in plants?Cellulose (makes up the cell walls) Starch (storage amylose and amylopectin)65
6726769578What polysaccharides are used in animals?Chitin (make up the exoskeleton of animals) Glycogen (strode in human liver)66
6726769579What are lipids?Fats, oil, waxes and steroids67
6726769580Are lipids hydrophilic or hydrophobic?Hydrophobic68
6726769581What are lipids made of?3 fatty acids and a glycerol69
6726769582What is a fatty acid?A hydrocarbon chain with a carbonyl group70
6726769583What do saturated fatty acids have?Single bonds71
6726769584What do unsaturated fatty acids have?At least one double bond72
6726769585Whoa are steroid's structure?They consist of four fused rings73
6726769586How are lipids used in energy storage?Lipids release energy when burned74
6726769587How are lipids used structurally?Phospholipids make up the cell membrane75
6726769588How are lipids used in the endocrine system?Steroids are hormones76
6726769589What is the structure of a phospholipid?2 hydrophobic tails facing the inside and a hydrophilic head on the outside77
6726769590What are the functions of proteins?Growth and repair Signaling from one cell to another Regulation: hormone Enzymatic activity Movement (muscle contractions)78
6726769591What are proteins made of?Polymers or polypeptides of amino acids?79
6726769592What bond makes up proteins?Polypeptide bond80
6726769593What makes up an amino acid?A carbonyl group, an amine group and an R group81
6726769594What determines the function of the protein?The shape or conformation82
6726769595What is the primary structure of proteins?Linear sequence of amino acids83
6726769596What is the secondary structure of proteins?Hydrogen bonds within polypeptide causes the shape to start to form (alpha helix of beta pleated sheet)84
6726769597What are secondary proteins called?Fibrous proteins85
6726769598What secondary protein make sup human hair?Keratin86
6726769599What is the quaternary structure?Multiple polypeptide chains bonding87
6726769600What is the tertiary structure?3-D shape88
6726769601What does the tertiary structure determine?Specificity89
6727117082What is it called when a change in the environment causes the protein to lose its shape?Denaturing90
6727117083What helps fold proteins?Chaperone proteins or chaperonins91
6727117084What are prions?Proteins that cause disease caused by the misfolding of other proteins92
6727117085What three techniques reveal the 3 D structure of proteins?X-ray crystallography, unceasing magnetic Resonance and bioinformatics93
6727117086What are the two types of nuclear acids?RNA (ribonucleic acids) and DNA (deoxyribonucleic acids)94
6727117087What are nuclear acids made of?Nucleotides95
6727117088What are nucleotides made of?Phosphate, 5-carbon sugar and a nitrogen base96
6727117089What are the bases?Adenine and thymine (DNA) or uracil (RNA) Cytosine and guanine97
6727117090What are functional groups?The components of organic molecules that is involved of the chemical reaction98
6727117091What is the compound hydroxyl makes?Alcohol99
6727117092What is the first law of thermodynamics?Energy can not be created or destroyed just transferred (law of conservation of energy)100
6727117093What is the second law of thermodynamics?During energy conversions, entropy (the disorder of the universe) is increased101
6727117094What is Gibb's free energy?Energy available to do work in the cell102
6727117095What is it called when a reaction releases energy?Exergonic103
6727117096What is it called when a reaction absorbs energy?Endergonic104
6727117097Exergonic reactions power Endergonic reactions so they are considered?Coupled105
6727117098What is Metabolism?The sum of all chemical reactions that take place in a cell106
6727117099What are reactions that break down molecules called?Catabolism107
6727117100What are reactions that build up molecules called?Anabolism108
6727117101Metabolic reactions take place in?Pathways109
6727117102What do enzymes do?They are catalytic proteins that spend up a reaction by lowering the activation energy110
6727117103What is the transition state?The reactive (unstable) condition of the substance after sufficient energy has been absorbed111
6727117104What are enzymes?Globular proteins and exhibit the tertiary structure112
6727117105What does an enzyme bind to?A substrate113
6727117106What is an induced-fit?A substrate binds to an enzymes active site and the enzyme alters it shape to better fit the substrate114
6727117107What is an enzyme bound to a substrate called?An enzyme-substrate complex115
6727117108What are coenzymes?Enzymes that help enzymes (vitamins)116
6727117109What are cofactors?Inorganic molecules that help enzymes117
6727117110What is competitive inhibition?Regulate enzymes by competing inhibitors bindi to the active site of the enzyme118
6727117111What is no competitive inhibition?Noncompetitive inhibitors of allosteric regulators bind to the allosteric site and it alters the shape of the enzyme preventing it to bind to substrates119
6727117112What is feedback inhibition in noncompetitive inhibition?The end product if the pathway is a the Eric inhibitor for an enzyme that catalysts an early step in the pathway120
6727117113What is cooperativity?Allosteric activation that binds to an enzyme and keeps it activcated121

Need Help?

We hope your visit has been a productive one. If you're having any problems, or would like to give some feedback, we'd love to hear from you.

For general help, questions, and suggestions, try our dedicated support forums.

If you need to contact the Course-Notes.Org web experience team, please use our contact form.

Need Notes?

While we strive to provide the most comprehensive notes for as many high school textbooks as possible, there are certainly going to be some that we miss. Drop us a note and let us know which textbooks you need. Be sure to include which edition of the textbook you are using! If we see enough demand, we'll do whatever we can to get those notes up on the site for you!