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Bio 20 Organic Chem
What are the biologically important elements? | âCHNOPSâ | Carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulphur. |
Which two of the âCHNOPSâ elements donât have two bonding sites? | Carbon and oxygen. How many do they have? | Carbon has four and oxygen has one. |
Whatâs the smallest non-living thing? | A subatomic particule. And the smallest living thing? | A cell. |
Rank these levels of biological organization from least to most complex. | Organism, community, tissue, cell, biosphere, ecosystem, organ, population, and system. | Cell, tissue, organ, system, organism, population, community, ecosystem, and biosphere. |
True or false. Molecules are smaller than atoms. | False. | From most to least complex, non-living things are subatomic particules, atoms, molecules, and organelles. |
What two elements must organic molecules contain? Together, what do they form? | Carbon and hydrogen. Together they form hydrocarbons (a chain or carbons with hydrogen attached at all other bonding sites, even if not drawn) Carbon is considered what? | Carbone is the backbone, or skeleton, for organic molecules. |
What does it mean to be polar? | Molecules with an unequal distribution of charge are polar. Polar molecules are hydrophilic, which means what? | They dissolve well in water. Hydrophobic is the opposite. |
Whatâs the structure of the functional group hydroxyl? | ROH. And its biological significance? | Itâs polar, hydrogen bonds found in alcohols. |
Whatâs the structure of the functional group carboxyl? | RCOOH. And its biological significance? | Itâs a weak acid, donates an H ion and becomes negatively charged. |
Whatâs the structure of the functional group amino? | RNH2. And its biological significance? | Itâs a weak base, accepts an H ion and becomes positively charged. |
Together, what do they carboxyl and amino groups make together? | Amino acids. They do this how? | By sharing a hydrogen ion. |
Whatâs the structure of the functional group ketone (carbonyl?) | RCOR. And its biological significance? | Itâs polar, found in some sugars. |
Whatâs the structure of the functional group phosphate? | RPO4. And its biological significance? | Itâs usually negatively charged. Forms acids by attracting hydrogen ions. In the phospholipid bilayer, ATP, and DNA/RNA. |
What are two function are the most common organic molecules in living things? What do they do to help an organism function? | They are required for material to build, repair, and maintain body tissue. And? | The fuel energy for bodily functions. |
What must organic substances contain? | Carbon and hydrogen. And what are the five categories of organic substances? | Carbohydrates, lipids, proteins, nucleic acids, and vitamins. |
What about inorganic substances? They contain what? | Carbon and hydrogen, but not together. The two inorganic substances necessary for organisms are what? | Water and minerals. |
What are polymers? | Large molecules made up of repeating parts. What are these repeating parts called? | Monomers. |
What are carbohydrates? | Energy storage molecules. Are they the first, second, or third source? | First. Carbohydrates are the go-to energy source. |
What are monosaccharides, or simple sugars? | Theyâre the basic subunits of all carbohydrates, so theyâre monomers. The most common form is glucose (used by vertebrates for cellular respiration,) but what are the four other forms? | Ribose, deoxyribose, fructose, and galactose. Monosaccharides are polar. |
Why does alpha glucose differ from beta glucose? | The OH and H on the right of the isomer are swapped. For alpha glucose, the OH is where? | At the top. For beta glucose the OH is at the bottom. |
What are disaccharides? | Theyâre two simple sugars (monosaccharides) joined together by a covalent bond. What is the process of creating a disaccharide called? | Dehydration synthesis, or a condensation relation. Water is produced and the H from one simple sugar and the OH from another are removed. |
Glucose and glucose make what? | Maltose. Glucose and galactose make what? | Lactose. Which leaves glucose and fructose to make sucrose, which is table sugar. |
What are polysaccharides? | Chains of simple sugars bonded together. Polymers. The two types are what? | Storage (starch and glycogen) and structure (cellulose and chitin.) |
How do plants store carbohydrates? | With starch, our most efficient fuel. Whatâs it made of? | Chains of alpha glucose, which form amylose. |
How do animals store carbohydrates? | With glycogen, which is made of alpha glucose. Where are our carbs stored? | In the liver and muscle cells. Starches are bigger than glycogen. |
What indigestible substance (unless youâre a cow, termite, bacteria, fungi etc.) makes up the cell wall of plants as well as half of all organic carbon in the biosphere? | Cellulose, or fibre. It makes for a healthy digestive tract (no constipation, diarrhoea) and is made up of chains of what? | Beta glucose aligned in a strong parallel structure without branching. |
Whatâs also indigestible it makes strong structure for animals? | Chitin. It makes up the exoskeleton for organisms and the cell walls or fungi. Is it digestible? | No. |
What is the richest source of energy? | Fat. Whatâs the go-to source? Carbohydrates. The last source used is what? | Protein. |
True or false. Carbohydrates provide about 1/3 of the bodyâs fuel needs. | False; they provide about 2/3 of our fuel needs. What happens if not enough carbohydrate is eaten? | The body breaks down fat and protein for energy. |
The main source of carbohydrates in your diet is green plants. What do carbohydrates provide? | Sugar, starch, and cellulose. Lactose is found in milk. How much of a Westernerâs carbohydrate intake is made up by simple sugars (ribose, deoxyribose, glucose, fructose, galactose?) | About half. Sugar over-consumption can lead to several issues, such as high blood pressure, diabetes, obesity, tooth decay, or hyperactivity. |
What are lipids? | Fats, oils, and waxes. Theyâre non-polar. What are they used for? | Storage of energy, structure for cell membranes, hormone and vitamin (ADEK) transporters. |
Most of our lipids, composed of three fatty acids, are called what? | Triglycerides. Theyâre attached to one glycerol molecule by what type of bond? | An ester bond. |
H | HâCâOH | HâCâOH | HâCâOH | H | That was glycerol. This is triglyceride. Notice all the hydrogen attached. This makes it saturated. | H O H H H H H H | || | | | | | | HâCâOâCâCâCâCâCâCâH | | | | | | | H H H H H | Repeat |
Saturated fats are solid and can clog the blood vessels. | The carbon atoms contain how many bonds? | Just one. Single bonds, which means that thereâs the maximum amount of hydrogen. |
Unsaturated fats come from plants, not animals. How many bonds between the carbon atoms? | Two. Double bonds, meaning not saturated with hydrogen. If thereâs just one double bond, what is the unsaturated fat called? | Monounsaturated. For more than one double bond, itâs polyunsaturated. |
The fatty acids of phospholipids are bonded to which carbons of a glycerol molecule? | Carbons 1 and 2. A phosphate group is bonded to which carbon? | Carbon 3 of the glycerol molecule. |
In the phospholipid bilayer, which part is hydrophobic? | The lipid, on the inside. That makes the phosphate what? | Hydrophilic. |
In glycolipids, or sugar lipids, one glycerol is bonded to two fatty acids on carbons 1 and 2. Whatâs bonded to carbon 3? | A carbohydrate chain. What are glycolipids components of in the cell? | Cell membranes. |
True or false. Lipids are a more concentrated fuel than carbohydrates. | True. Why? What do they contain more or less of? | More carbon and less oxygen, so more of the molecule can be burned. |
Which fat soluble vitamins do fats carry? | Vitamins, A, D, E, and K. Why do some foods taste better with fat? | Many flavours and aromas are fat soluble. |
What happens when triglyceride is broken down? One something and three something else's. | One glycerol and three fatty acids. In other words, two glycerols make what? | One glucose. |
True or false. Large fatty acids cannot be converted to glucose. | True. Instead theyâre broken down by cellular respiration and converted into energy. What do fats function as? | Insulators and cushions. Trans fats are bad because theyâre very stable due to the kink in the double bond being removed. |
ðð This resembles what? ðð | Cholesterol. True or false. Cholesterol is not essential to life. | False. And its found in the phospholipid bilayer, bile, and as insulation for nerve fibres. |
What are two ways to get cholesterol? | Through food, especially saturated (animal) fats as well as in the body, manufactured by what? | Liver. |
Are LDL (low density lipoproteins) good or bad? Why? | LDL are bad because they cause the blockage of arteries. How about HDL (high density lipoproteins?) | HDL are good because they carry exec cholesterol to the liver where it can be excreted. |
What do chains of amino acids make? | Proteins. Whatâs the name of the bond that links amino acids together? | A peptide bond. |
To make proteins for humans, how many different amino acids can be linked together? | Twenty. How many amino acids can the body not produce? | Nine. |
Whatâs the name for two amino acids bonded together? | A dipeptide. For more than two? | A polypeptide. |
True or false. The root group is the same for each of the twenty amino acids. | False. For each amino acid, the root group is different. What other two groups make up an amino acid? | An amino group and an acid group, which are common to all amino acids. |
H H O | | || HâNâCâCâOH | R Which side is the acid group, and whatâs it called? | The carboxyl is acid group is on the right. How can an amino acid's structure be easily recognized? Which element? | The nitrogen from the amino group. |
True or false. Protein synthesis, the formation of a peptide bond, is an example of dehydration synthesis. | True. A water molecule is released through protein synthesis. The OH from one of the amino acids is removed and the what is removed from the other? | An H. |
What is the denaturation of proteins? | Itâs the process in which proteins lose their 3-D shape, AKA coagulation. What are three circumstances/reasons for denaturation? | Heat, alcohol, and pH changes. |
When excess protein cannot be stored but can be used as fuel, whatâs it called? | Deamination. In the liver, the amine group is removed and the protein turns to urea which is then excreted. What happens to the amino acid after that? | Itâs oxidized to produce energy. |
What protein structure is the basic chain of amino acids? | The primary structure. What three things about the amino acids does it depend upon? | The number, kind, and sequence of the amino acids. |
What two things might the secondary structure do in terms of its form? | It can coil into a helix or form flattened sheets. By what kind of bonds are these structures held together by? | Hydrogen bonds. The helix is alpha and the sheets are beta. |
What about globular proteins, like enzymes, antibodies, and receptors? These are all what kind of structure? | Tertiary structure. What do the R groups in the amino acids do? | They interfere with the smooth formation of the secondary structure. |
Dimers, which contain two proteins, are which type of structure? | Quaternary structure. Insulin and hemoglobin are examples of instances when how many polypeptide chains are bonded together? | Two or more. |
Which protein structure resembles four bunched up snakes? | Quaternary. Which structure could be a bunch of flat snakes piled up or one coiled snake? | Secondary. Tertiary is one jumbled up snake, and primary is a normal snake. |
What do proteins maintain the correct amounts of in your body? | Salt and fluids, as well as a pH of 7.2 and regular bodily conditions (hormones.) What do proteins do for your tissue and muscle? | Allows for growth, maintenance, and motion. Also, there are antibodies which attach to Invisalign proteins to wipe them out. |
What type of molecules are nucleic acids? | The ones involved in heredity. What do they direct? | Protein synthesis. |
What is DNA made up of? | Repeating parts called nucleotides. What three chemical groups are these nucleotides made of? | Phosphate, deoxyribose (a 5 carbon sugar,) and a nitrogen base. |
What are the four types of nitrogen bases? | Adenine (A,) cytosine (C,) guanine (G,) and thymine (T.) How do they go together as complementary base pairs? | A and T, C and G. Theyâre held together by a weak hydrogen bond. |
Which of the nitrogen bases are considered purines? Why? | Itâs adenine and guanine due to their double ring structures. Which nitrogen bases are considered pyrimidines? Why? | Itâs cytosine and thymine due to their single rings. |
Whatâs RNA, or ribonucleic acid? | Itâs like DNA but a single helix. What is the sugar and what replaces thymine? | The sugar is ribose and the nitrogenous base thymine is replaced by uracil. RNA is the blueprint that ribosomes use for protein production. It can leave the nucleus. |
What two processes use water? | Hydrolysis (splitting a molecule by adding water) and dehydration synthesis (joining two molecules by removing water.) Water participates in many chemical reactions and is known as a universal what? | Solvant. |
True or false. Vitamins are inorganic and required in large amounts. | False. Vitamins are organic and required in very small amounts. How many known vitamins are there? | More than thirty. All cells require all enzymes; otherwise, processes will be impaired. |
Coenzymes make what by combining with inactive proteins? | Active enzymes. Whatâs the difference between enriched and fortified foods? | Enriched foods replace nutrients that were lost during processing; fortified foods add nutrients that werenât originally in the food. |
Vitamin A deficiency results in what? | Night-blindedness. What about Vitamin B6 and B12? | Anemia. |
Vitamin C deficiency results in what? | Scurvy (gum bleeding.) What about Vitamin D, the happy vitamin? | Rickets, osteomalacia, weight loss, fatigue, SAD disorder, immune system problems, sleep/wake cycle. |
How many minerals do humans need, and are minerals organic? | Miners are inorganic and we need twenty. Theyâre present in how many body cells? | All of them. |
Why do we need calcium? | For bones, teeth, nerves, muscles, and blood clotting. What about phosphorus? | Needed to make proteins, for DNA and RNA, cell membranes, and ATP. |
Why do we need potassium? | For blood clotting and nerve impulses. What about sodium? | For never impulse and water balance. |
Why do we need iron? | For hemoglobin, so as to not become anemic. What about iodine? | For the thyroid gland. |