H21 Study guides, Class notes & Summaries

UOFT BCH210 MIDTERM EXAM STUDY GUIDE RATED A.UOFT BCH210 MIDTERM EXAM STUDY GUIDE RATED A.UOFT BCH210 MIDTERM EXAM STUDY GUIDE RATED A.UOFT BCH210 MIDTERM EXAM STUDY GUIDE RATED A.UOFT BCH210 MIDTERM EXAM STUDY GUIDE RATED A.UOFT BCH210 MIDTERM EXAM STUDY GUIDE RATED A.UOFT BCH210 MIDTERM EXAM STUDY GUIDE RATED A.UOFT BCH210 MIDTERM EXAM STUDY GUIDE RATED A.

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...

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 ...

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...

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...

What are some membrane properties? correct answer: - Composed of lipid bilayer that are impermeable to polar or charged molecules. - Hydrophobic effect drives membrane formation of amphipathic molecules - Membranes are asymmetric and composed of lipids and proteins - Membrane proteins play key roles in transport of molecules and transduction of info across the membrane What are essential membrane functions? correct answer: - Act as a barrier regulating import and export of essential mo...

BCH210 Week 4 Questions With Complete Solutions

FE PRF 192 (H212) học là pass. Top Exam Questions answers. Graded A+ What is Pulse Repetition Frequency? - -The number of pulses that occur in one second. What kind of relationship is between PRF and frequency? - -Unrelated What are the units for PRF? - -Hertz, Hz, per second Who determines PRF? - -Sound Source But can be adjusted by the sonographer by adjusting the depth. What are the typical values for PRF? - -1-10,000 Hz (1-10k Hz) PRF depends only on what? - -Imaging ...