Bch210 - Study guides, Class notes & Summaries

What are the three types of membrane proteins? correct answer: 1) Peripheral 2) Integral 3) Lipid anchored What are peripheral membrane proteins? correct answer: - Adhere to surface of lipid membranes or integral membrane proteins through non-covalent interactions - Can be removed using milder conditions What is the signature amino acid sequence for amphipathic helices? correct answer: P-P-NP-NP-P-P-NP-NP alternating polar and non-polar aa What are integral membrane proteins? ...

How does membrane formation occur? correct answer: decrease in ionic bond with water What are the main functions of the cell membrane? correct answer: - barrier regulating the import and export of essential molecules - Compartmentalization of specialized processes increases cellular efficiency. - modulates cell-cell recognition due to the presence of glycoproteins and glycolipids. - Signalling across the membrane is mediated by proteins and lipids. What is the fluid mosaic model? corr...

BCH210 MIDTERM Question and answers 2023 verified to pass

Direction of phospholipid movement in flippases? correct answer: Outer to inner leaflet Moves PE (neutral) and PS (-1) Direction of phospholipid movement in floppases? correct answer: Inner to outer leaflet Function of Scramblase correct answer: Increases membrane SYMMETRY Moves phospholipids down their conc gradient Result of adding crosslinkers into cell membrane for FRAP correct answer: Slows down diffusion of phospholipids; slower recovery rate Entropy of lipids [?] when ...

BCH210 Week 4 Questions With Complete Solutions

BCH210 Midterm 2 Question and answers correctly solved 2023

BCH210 MIDTERM Question and answers 100% correct 2023

What are the different biochemical molecules of life? correct answer: - proteins = antibodies, receptors, transorters, hormones enzymes - lipids = fats, cholesterol, hormones - sugars = energy, cell structure - nucleic acids = DNA, RNA - small molecules= vitamines, metabolites - ions = K+, Na+, Ca2+, Cl- - water What are the 2 different types of hormones? correct answer: - protein/ lipid derivative What determines the function of a molecules correct answer: structure What cause...

Hemoglobin correct answer: Tetramer of two alpha and two beta polypeptide chains Contains heme Globin is a protein Which amino acid change is involved in sickle cell anemia? correct answer: Glu6Val A single amino acid change in the beta chain of hemoglobin causes sickle cell anemia HbS forms long polymers that change the shape of the RBC Where are hydrophobic and hydrophilic amino acids usually found in a protein? correct answer: Hydrophobic on the inside (non-polar interio...

types of lipids (purpose) correct answersstorage, structural, and signalling fatty acid chemical structure and charge correct answers- fatty part is the carbon chain - acid part is carboxyl group (-COOH) - negatively charged which conformations of saturated fatty acids are most stable? correct answers- anti conformation - extended conformation unsaturated fatty acids correct answersdouble bonds are almost always in cis conformation which results in kinks in structure mono-unsatura...