869714739 | Atoms are the | building blocks of matter | | 1 |
869714740 | Atoms consist of | protons, neutrons, and electrons | | 2 |
869714741 | An atom in the elemental state is always | neutral | | 3 |
869714742 | If all the electrons are in the lowest available energy state, the atom is said to be in the | ground state. | | 4 |
869714743 | When an atom absorbs energy, it moves to a higher level... | the excited state | | 5 |
869714744 | Isotopes | atoms of one element that vary only in the amount of neutrons in the nucleus. They are the same chemically. | | 6 |
869714745 | Radioisotopes | radioactive isotopes | | 7 |
869714746 | Bond | a bond is formed when two atomic nuclei attract the same electrons | | 8 |
869714747 | Energy releases when a bond is | formed | | 9 |
869714748 | Energy is lost when a bond is | broken | | 10 |
869714749 | Ionic Bonds | transfer of electrons, ions
gains electron - anion (A Negative ION)
loses electron - cation | | 11 |
869714750 | Covalent Bonds | sharing electrons
molecules
single, double, and triple bonds
polar/non polar | | 12 |
869714751 | Are diatomics polar or non polar? | non polar | | 13 |
869714752 | Non Polar | electrons are shared equally between two identical atoms, balanced | | 14 |
869714753 | Polar | electrons are shared unequally | | 15 |
869714754 | Hydrophillic | water loving. | | 16 |
869714755 | Hydrophobic | water hating | | 17 |
869714756 | Miscibility | property of liquids to mix in all proportions | | 18 |
869714757 | Hydrogen Bond | Bond between a hydrogen atom and either an oxygen, nitrogen, or fluorine. | | 19 |
869714758 | Properties of Water | - high specific heat
- high heat of vaporization
- universal solvent
- strong cohesion tension
- less dense as a solid than a liquid | | 20 |
869714759 | Capillary Action | combined forces of cohesion and adhesion | | 21 |
869714760 | Surface Tension | the property that allows bugs to walk on water without falling through, caused by hydrogen bonding | | 22 |
869714761 | Cohesion | the act of sticking together tightly, water is attracted to water | | 23 |
869714762 | Adhesion | the act of repelling, water is attracted to something other than water | | 24 |
869714763 | pH | measure of acidity and alkalinity in a solution | | 25 |
869714764 | 0-6 pH | acidic | | 26 |
869714765 | 7 pH | neutral | | 27 |
869714766 | 8-14 pH | basic/alkaline | | 28 |
869714767 | The value of pH is the... | negative log of the hydrogen ion concentration in moles/liter | | 29 |
869714768 | A pH of 1 is "x" times higher than a pH of 2 | x = 10 | | 30 |
869714769 | pH of stomach acid | 2 | | 31 |
869714770 | pH of acid rain | 1.5-5.4 | | 32 |
869714771 | pH of human blood | 7.4 | | 33 |
869714772 | Buffers | resist a change in pH | | 34 |
869714773 | What is the most important buffer in the human blood? | Biocarbonate | | 35 |
869714774 | Isomers | organic compounds that have the same molecular formula but different structures and different properties | | 36 |
869714775 | Structural Isomers | differ in the arrangement of their atoms | | 37 |
869714776 | Cis-Trans Isomers | only differ in the spatial arrangement around double bonds, which are not flexible like single bonds | | 38 |
869714777 | Enantimoers | molecules that are mirror right images of each other | | 39 |
869714778 | L - | left image, referring to enantimoers | | 40 |
869714779 | D - | right image, referring to enantimoers | | 41 |
869714780 | All the amino acids in cells are (L- or D-) | L- | | 42 |
869714781 | Organic Compounds | contain carbon | | 43 |
869714782 | Four classes of organic compounds | Carbohydrates, lipids, proteins, nucleic acids. | | 44 |
870209799 | What does the body use carbohydrates for? | Fuel and as building materials | | 45 |
870209800 | What do carbohydrates consist of? | Carbon, hydrogen, oxygen | | 46 |
870209801 | The ratio of hydrogen to oxygen is always | 2:1 | | 47 |
870209802 | The empirical formula of carbohydrates is always | CnH2O | | 48 |
870209803 | 1g of a carbohydrate will release "x" calories in a calorimeter | x = 4 | | 49 |
870209804 | What are the three classes of carbohydrates? | Monosaccharides, disaccharides, polysaccharides | | 50 |
870209805 | Monosaccharides formula | C6H12O6 | | 51 |
870209806 | What monosaccharides are isomers of each other? | glucose, galactose, fructose | | 52 |
870209807 | Disaccharides formula | C12H22O11 | | 53 |
870209808 | Definition of a disaccharide | two monosaccharides joined together, with the release of a water (H2O) molecule by dehydration | | 54 |
870209809 | monosaccharide + monosaccharide --> | disaccharide + water | | 55 |
870209810 | C6H12O6 + C6H12O6 --> | C12H22O11 + H2O | | 56 |
870209811 | glucose + glucose --> | maltose + water | | 57 |
870209812 | glucose + galactose --> | lactose + water | | 58 |
870209813 | glucose + fructose --> | sucrose + water | | 59 |
870209814 | Hydrolysis | the breakdown of a compound by adding water | | 60 |
870209815 | What is hydrolysis the reverse of? | Condensation synthesis | | 61 |
870209816 | Polysaccharides | are macro-molecules, polymers of carbohydrates | | 62 |
870209817 | How are polysaccharides formed? | many monosaccharides join together by dehydration reactions | | 63 |
870209818 | How many types of polysaccharides are there? | Four | | 64 |
870209819 | Plant - structural polysaccharide | Cellulose - makes up the plant cell wall | | 65 |
870209820 | Plant - storage polysaccharide | starch - amylase, amylopectin | | 66 |
870209821 | Animals - structural polysaccharide | Chitin - makes up the exoskeleton in arthorpods | | 67 |
870209822 | Where also can chitin be found? | in the cell wall of mushrooms | | 68 |
870209823 | Animals - storage polysaccharide | glycogen - "animal starch"stored in liver and skeletal muscles | | 69 |
870221660 | Lipids | fats, oils, waxes, steroids | | 70 |
870221661 | All lipids are | hydrophoibc | | 71 |
870221662 | Most lipids contain (structurally) | 1 glycerol and 3 fatty acids | | 72 |
870221663 | Glycerol is an | alcohol | | 73 |
870221664 | Fatty acid | a hydrocarbon chain with a carboxyl group at one end | | 74 |
870221665 | Saturated fats | come from animals. are solid at room temperature, contain only single bonds between carbon atoms | | 75 |
870221666 | Unsaturated fats | come form plants, liquid at room temperature, good dietary fats, have at least one double bond formed by the removal of a hydrogen atom in the carbon chain | | 76 |
870221667 | Tropical oils, such as coconut are more similar to | saturated fats | | 77 |
870221668 | Steroids | are lipids that do not have the same general structure as other lipids, they consist of four fused rings | | 78 |
870221669 | Types of steroids (3) | cholesterol, estradiol, testosterone | | 79 |
870221670 | Lipid energy storange | 1g of any lipid will release 9 calories per gram when burned in a calorimeter | | 80 |
870221671 | Lipid structure | phospolipids, major component of the cell membrane | | 81 |
870221672 | Lipid endocrine | some steroids are hormones | | 82 |
870221673 | Phospolipids | a lipid where a phosphate group replaces one fatty acid | | 83 |
870221674 | When phospolipids are added to water, | they self assemble into a bilayer | | 84 |
870221675 | The head of the phospolipid is _____, while the tail is ________ | hydrophilic,hydrophobic
picture : http://www.biologycorner.com/resources/lipidbilayer.gif | | 85 |
870221676 | Proteins | complex, unbalanced macromolecules | | 86 |
870221677 | Proteins carry out bodily functions, such as: | growth, repair, enzyme activities, signaling, movement, regulation | | 87 |
870221678 | 1g of a protein burned in a calorimeter releases __ calories | 4 | | 88 |
870221679 | Proteins contain what elements? | Sulfur, phosphorous, carbon, oxygen, hydrogen, nitrogen | | 89 |
870221680 | Amino acids | consist of a carboxyl group, amine group, and a variable (R) group all attached to a center, asymmetrical carbon atom | | 90 |
870221681 | The R group ____ with each amino acid | differs | | 91 |
870221682 | Dipeptide | molecule consisting of two amino acids connected by one peptide bond | | 92 |
870221683 | Four levels of protein structure | primary, secondary, tertiary, quartenary | | 93 |
870221684 | Primary | the unique, linear sequence of amino acids, the slightest change can have major consequences | | 94 |
870221685 | Secondary | results from hydrogen bonding within polypeptide molecule, refers to how the polypeptide coils or folds into two distinct shapes | | 95 |
870221686 | What are the two distinct shapes in a secondary protein structure? | Alpha helix and beta pleated sheet | | 96 |
870221687 | Tertiary structure | intricate, 3D shape, imposed on secondary structure, determine the protein's specificity | | 97 |
870221688 | What are the contributing factors in a tertiary sturcture? | hydrogen bonding between R groups, ionic bonding between R groups, hydrophobic interactions, Van der Waals interactions, disulfide bonds between cysteine amino acids | | 98 |
870221689 | Quaternary structure | proteins that have more than one polypeptide chain | | 99 |
870221690 | Fibrous proteins | proteins that exhibit either alpha helix, beta pleated sheet, or both | | 100 |
871225649 | Bioformatics | uses computers and mathematical modeling to integrate the huge volume of data generated from the analysis of an amino acid sequence of a protein to predict the 3D structure of the resulting protein molecule | | 101 |
871235139 | How many nucleic acids are there? | 2 | | 102 |
871235140 | What are the names of the nucleic acids? | DNA and RNA | | 103 |
871235141 | DNA | Deoxyribonucleic acid | | 104 |
871235142 | RNA | Ribonucleic acid | | 105 |
871235143 | Polymer | a substance that has a molecular structure built up chiefly or completely from a large number of similar units bonded together | | 106 |
871235144 | Polynucleotides | A linear polymer whose molecule is composed of many nucleotide units, constituting a section of a nucleic acid molecule. | | 107 |
871235145 | Nucleotide | consists of a phosphate, 5-carbon sugar (deoxyribose or ribose), and a nitrogen base - adenine (A), cytosene (C), guanine (G), and either in DNA thymine (T) or in RNA uracil (U). | | 108 |
871235146 | Functional groups | the components of organic molecules that are most often involved in chemical reactions, attached to the carbon skeleton | | 109 |
871235147 | Entropy | A thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work, often interpreted as the degree of disorder or randomness in the system | | 110 |
871235148 | First law of thermodynamics/Law of conservation of energy | energy can not be created or destroyed, only transformed from one form to another | | 111 |
871235149 | Second law of thermodynamics | during energy conversions, the universe becomes more disordered, entropy increases | | 112 |
871478062 | Gibb's Free Energy | free energy, expressed as "G" | | 113 |
871478063 | Exergonic/exothermic | energy released during the course of a reaction | | 114 |
871478064 | Endergonic/endothermic | energy absorbed during the course of a reaction | | 115 |
871478065 | ____ reactions power the _____ ones. | exergonic, endergonic | | 116 |
871478066 | Metabolism | sum of all chemical reactions that take place in cells | | 117 |
871478067 | Catabolism | reactions that break down molecules | | 118 |
871478068 | Anabolism | reactions that build up molecules | | 119 |
871478069 | Pathways | the series in which metabolism functions take place, each pathway holds a specific function | | 120 |
871478070 | Enzymes | serve as catalytic proteins that speed up reactions by lowering the energy of activation | | 121 |
871478071 | Transition state | the reactive (unstable) condition of the substance after sufficient energy has been absorbed to initiate the reaction | | 122 |
871478072 | Enzymes are globular proteins that | exhibit tertiary structure | | 123 |
871478073 | Enzymes are substrate | specific | | 124 |
871478074 | Induced-fit model | describes how enzymes work | | 125 |
871478075 | Enzymes are not _____ in a reaction, they are _____. | destroyed, reused | | 126 |
871478076 | Enzyme suffix | "ase" | | 127 |
871478077 | lactose (enzyme) | lactase | | 128 |
871478078 | Enzyme efficiency is affected by | temperature and pH balance | | 129 |
871478079 | What is the optimal temperature for human enzymes? | 37*C or 98.6*F | | 130 |
871478080 | Competitive Inhibition | some compounds resemble the substrate molecules and compete for the same active site on the enzyme | | 131 |
871478081 | Competitive Inhibitors | reduce the productivity of enzymes by preventing or limiting the substrate from binding to the enzyme | | 132 |
871478082 | Allosteric enzymes | shape of the enzyme alters their efficiency | | 133 |
871478083 | Feedback inhibition | the end product of the pathway is the allosteric inhibitor that catalyzes an early step in the pathway | | 134 |
871728292 | Theory of Endosymbiosis | eukaryotic cells emerged when mitochondria and chloroplasts, once free living prokaryotes, took up permanent residence inside other larger calls, about 1.5 billion years ago | | 135 |
871728293 | Most animal and plant cells have a diameter of | 10-100 µm | | 136 |
871728294 | µm | microns, micrometers. can also be expresses as um | | 137 |
871728295 | Eukaryotic cell | have an internal membrane, compartmentized, led to the rapid evolution of organisms | | 138 |
871728296 | What are the general characteristics of cells | enclosed by the plasma membrane, contain semi-fluid called cytosol, contain ribosomes, contain genetic material in the form of DNA | | 139 |
871728297 | What are the two types of cells? | prokaryotes and eukaryotes | | 140 |
871728298 | Prokaryote characteristics | simple, no nuclei, no other internal membrane, all bacteria, have a nucleoid | | 141 |
871728299 | Nucleoid | non-membrane bound region where the chromosome is located | | 142 |
871728300 | Eukaryotic characteristics | nucleus bound by double membrane, organelles, inner membrane, compartmentized, human body | | 143 |
871728301 | Function dictates | form | | 144 |
873546318 | The volume of each cell determines | the amount of metabolic activity the cell carries on | | 145 |
873546319 | The surface area of the plasma membrane limits the | amount of material that can enter and leave the cell | | 146 |
873546320 | Nucleus (of a non-dividing cell) | contains one or more prominent nucleoli (rRNA is synthesized here), combines proteins imported from the cytoplasm with rRNA made in the nucleolius, non-membrane-bound | | 147 |
873546321 | Ribosome | protein factory, free in cytoplasm (protein produced for the cell's own use) or bound to the membrane (meant for export out of the cell) | | 148 |
873546322 | Peroxisomes | found in both animal and plant cells, contain catalase, covert hydrogen peroxide (H2O2) into water (H2O) with the release of oxygen atoms, detoxify alcohol in liver cells | | 149 |
873546323 | Endomembrane system | regulates protein traffic and performs metabolic functions in cells, includes: nuclear envelope, endoplasmic reticulum, golgi apparatus, lysosomes, vesicles, vacuoles, and plasma membrane | | 150 |