Study Guide for CHE 420 Test 1
Study Guide for CHE 420 Test 1 CHE 420
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This 9 page Study Guide was uploaded by Bethany Shay Edgeworth on Wednesday September 23, 2015. The Study Guide belongs to CHE 420 at University of Southern Mississippi taught by Vijay Rangachari in Summer 2015. Since its upload, it has received 106 views. For similar materials see Principles of Biochemistry in Chemistry at University of Southern Mississippi.
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Date Created: 09/23/15
10 11 Amino acids are classi ed PRINCIPLES OF BIOCHEMISTRY STUDY GUIDE FOR EXAM 1 What are the 6 elements that living organisms are made of CNPOHampS How many covalent bonds does carbon have many covalent bonds does hydrogen have gtlltgtllt What are molecules synthesized by living organisms Biomolecules amp according to their location Alpha beta amp gamma What are the 4 major classes Lipids carbohydrates nucleotides amp amino acids Nucleic acids are polymers of Nucleotides Proteins are polymers of Amino acids Polysaccharides are polymers of Monosaccha rides Which of the following are functions of amino acids Check all that apply Carriers of genetic information Hormones Metabolic intermediates Neurotransmitters Enzyme components How many dipeptides can be made from 3 amino acids leucine histidine amp valine 32 9 DP00quot 12 What is an example of nucleophilic substitution Hydrolysis 13 What is a precursor of the vitamin pantothenic acid BetaAlanine 14 What is an example of a neurotransmitter GammaAminobutyric acid 15 How are amino acids connected Peptide bonds 16 What is the blueprint of the cell that encodes the genetic information of an organism DNA 17 What nucleotide bases are purines Adenine amp guanine 18 What nucleotide bases are pyrimidines Thymine amp cytosine 19 What are the 4 types of noncoding RNAs siRNA miRNA snRNA amp snoRNA 20 What controls when the information encoded in a gene will be accessed Gene expression 21 Select the hydrophobic species C6H1206 P04 3 Vitamin D C27H440 NaCl CH4 f C18H3402 DP00quot 22 Where does the storage of genetic information take place Nucleus 23 What is the surface on which ribosomes bind amp takes part in protein synthesis Rough ER 24 Where does lipid synthesis amp drug metabolism take place Smooth ER 25 Where does the translation from RNA to proteins take place Ribosomes 26 Where does energy metabolism amp the synthesis of ATP take place Mitochondria 27 Given the following characteristics de ne if they are prokaryotic or eukaryotic Have true nucleus EUKARYOTIC Unicellular BOTH Generally small less than 2 micrometers PROKARYOTIC Multicellular EUKARYOTIC Lack discrete nucleus PROKARYOTIC DP00quot 28 Match the following reactions Elimination reaction 2 1 Atoms or groups undergoing intramolecular shifts b Addition reaction 4 2 Forms double bond when atoms H20 are removed c Isomerization reaction 1 3 Atom with electron unshared pairs displaces LG d Nucleophilic substitution hydrolysis 3 4 2 molecules combine to form 1 product H20 added 0 29 Loss of electrons oxygen added or hydrogen removed Oxidation 30 Gain of electrons oxygen removed or hydrogen added ReducUon 31 What is the capacity to do work Energy 32 What is a biological membrane Bilayer containing lipids with hydrophilic head groups oriented towards solvent amp hydrophobic tails pointing inward 33 Which of the following are components of a biological membrane a Lipids b Nucleic acids c Proteins 34 How are biological membranes held together Noncovalent interactions 35 What are the 3 functions of the eukaryotic plasma membrane Cell adhesion regulation of ow of ionsmolecules into cell amp signal transduction 36 What regulates apoptosis Mitochondria 37 Which of the following are functions of the cytoskeleton of the cell a Provides structural support b Assists in cellular movement c Constitutes cytosol of the cell d Forms cell membrane e Maintains cell shape 38 What are the smallest components 57 nm of the cytoskeleton made of actin amp takes part in amoeboid movement Micro laments 39 What are the largest components 25 nm of the cytoskeleton made of tubulin amp a component of the mitotic spindle Microtubules 40 What are intermediate in size 10 nm amp found in the cytoskeleton Intermediate bers 41 Rank from smallest to largest Proton water molecule amino acid protein ribosome mitochondria amp nucleus 42 What are the 5 steps of cell fractionation 1 Cell suspension homogenized 2 Pellet contains nuclei amp unbroken cells 3 Pellet contains mitochondria amp peroxisomes 4 Pellet contains microsomes 5 Pellet contains ribosomes 43 What is the difference between anabolism amp catabolism Anabolism is small to large molecules Catabolism is large to small molecules 44 What captures energy and transforms it into usable form Energy transfer pathways 45 What allows cells to receive and respond to signals Signal transduction pathways 46 Which of the following have at least 1 polar bond CC4 O2 CH3CH2CH3 OCO goom 47 Which of these molecules are polar CH2C2 PC3 C02 502 on cm 48 What are the molecules that have a net dipole moment BF3 CH2C2 CH320 C02 CC4 09069 49 What are the 3 steps of signal transduction 1 Reception 2 Transduction 3 Response 50 What are the 4 features of prokaryotes 1 Cell wall 2 Plasma membranes 3 Circular DNA plasmid 4 No membranebound organelles 51 What is the cell wall of prokaryotic cells composed of Peptidoglycan 52 What contains the circular chromosomes in prokaryotic cells Nucleoid 53 What are large granules that contain organic or inorganic compounds lnclusion bodies 54 What is the process by which carbohydrates are added on to a protein molecule amp occurs in the golgi apparatus Glycosylation 55 What are recycled back to the cis golgi from the trans golgi Cisternal maturation model vesicles 56 Where is 10 of DNA found in the cell Mitochondria 57 What are vesicles that contain digestive enzymes Lysosomes 58 What does the term autophagy mean Removes debris in cell 59 Why are their folds in the mitochondria More surface area means more ATP production 60 What is permeable to molecules in the mitochondria Outer membrane 61 What area in the mitochondria is the permeability barrier invaginated and functions in oxygen reduction amp ATP synthesis lnner membrane 62 Where are soluble proteins small molecules and ions ribosomes DNA amp RNAs located in the mitochondria and functions in oxidative degradation of nutrients Matrix 63 What are organelles found only in plants algae amp some protists Plastids 64 What are the 2 types of plastids Leucoplasts amp chromoplasts 65 Chloroplasts are specialized for photosynthesis Chromoplasts 66 What affects dispersion forces Polarizability size amp molecular weight 67 What are interactions with permanent dipoles and strength amp orientation of dipole is affected Dipoledipole moment 68 What is it when H is bonded to N O or F amp orientation is affected Hydrogen bonding 69 What involves ions amp charged species and dielectric size amp type of charge is affected Ionic interactions 70 Why is C02 a nonpolar molecule Because it has a zero dipole moment 71 What are the strongest to weakest noncovalent intermolecular interactions STRONGEST lonic interactions Hydrogen bonds Dipoledipole attraction Dispersion forces WEAKEST 72 The tendency of hydrophobic molecules to aggregate in water is called what Hydrophobic effect 73 What decreases the number of waterwater hydrogen bonds Hydration of a hydrophobic molecule 74 What is the bilayer of a cellular membrane primarily composed of Amphipathic amphiphilic lipids 75 Ionized amino acid side chains can form what with one another Salt bridges 76 The order of magnitude is weaker than covalent in what bond Noncovalenthyd rogen 77 When an acid amp base meet what forms Salt 78 Identify the compounds that participate in hydrogen bonding as pure liquids Propene HCl HF CH320 1aminopropane Pentanol rhme om 79 Which compound is the most soluble in water Butanol 1chloropentane Methylene dichloride Butane on cm 80 How do you nd the hydrogen ion concentration of a solution 1039pH 81 What are some examples of strong acids HN03 HBr 82 What are some examples of weak acids H2C03 HCN amp CH3COOH 83 What are some examples of strong bases NaOH amp BaOH2 84 What are some examples of weak bases CH32NH amp NH3 85 Which is the weakest acid C3CCOOH CH3COOH CH3CH3 CH30H goom 86 Which is the weakest base C3CCOOH CH3COOH CH3CH3 CH30H on cm 87 What is the HendersonHasselbalch equation to nd the pH pH pka log baseacid or pH pK log AHA 88 When the concentration of H30 is decreased what increases pH 89 What is the pka equation Pka og Ka 90 What is the Ka equation Ka HAHA
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