H21 Guías de estudio, Notas de estudios & Resúmenes

What is the formula for a monosaccharide? Use an example to describe how monosaccharides link to form disaccharides correct answer: (CH2O)*n, where n is the number of carbons and must be greater than 3 (e.g. glucose has 6 carbons, C6H12O6). Glucose and fructose are both monosaccharides, which link through a glycosidic bond to form sucrose, a disaccharide Name, classify and describe the two simplest monosaccharides (3 carbons) correct answer: Glyceraldehyde: Aldo-triose, aldehyde on one end ...

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

Essential Membrane Functions correct answer: act as barrier regulate import and export of molecules compartmentalization of processes increases efficiency membrane properties correct answer: composed of lipid bilayer impermeable to polar molecules asymmetric membrane fluidity correct answer: lipids and proteins rotate or move within bilayer; allows cell movement, growth, division, secretion, cell junction formation, and self-heal if punctured comformational changes mediate fluid...

Which ONE of the following amino acids may be linked covalently to an oligosaccharide via an O-glycosidic bond? A. Glc B. Tyr C. Thr D. Asp correct answer: C - Thr has an OH side chain Which ONE of the following statements is CORRECT regarding the role of thermodynamics in glycolysis? A. It is spontaneous in the forward direction due to the cleavage of glucose into 2 molecules. B. ATP is required as the pathways is unfavourable under standard conditions. C. Thermodynamically favourabl...

Membranes (both outside and inside the cell) correct answer: Not a static structure, very important for cell function. They contain proteins that are very complex and vital to cell life. Mitochondria membranes correct answer: Very vital for the cell, has both an inner and outer membrane. What drives membrane formation? correct answer: A decrease in ionic interactions with water / limiting the hydrophobic interactions drives membrane formation. Lipid tails are ... correct answer: Hyd...

proteins correct answer: polymers of amino acids linked in a linear chain by peptide/amide bonds (polypeptides) polysaccharides correct answer: polymers of sugars (mono-saccharides) linked in linear and branched chains by glycosidic bonds DNA correct answer: polymers of nucleotides linked in linear chains by phosphodiester bonds protein enzymes correct answer: Linkages (bonds) are formed/broken by _______? sickle cell anemia correct answer: a single amino acid change in hemoglob...

RSCH2122-New All Possible Questions and Answers 100% Verified

Which AA likes to form alpha helix? correct answer: Glutamate Which AA likes to form beta sheet correct answer: Valine Which amino acids have aliphatic side chains? correct answer: alanine, glycine, valine, leucine, isoleucine, which amino acids have aliphatic hydroxyl side chains? correct answer: serine and threonine which amino acids have aromatic side chains? correct answer: phenylalanine, tyrosine, tryptophan which amino acids are sulfur containing? correct answer: cyste...

Name three factors responsible for membrane formation correct answer: Decrease in ionic interactions with water Decrease in membrane entropy Non-covalent interactions between lipids and proteins What membrane structures allow the cell membrane to modulate cell-cell recognition? correct answer: Glycoproteins and glycoplipids What non-covalent forces drive spontaneous membrane assembly? correct answer: Hydrophobic effect, hydrogen bonds and van der Waals What is the most important re...

What does Rotenone and amytal do? correct answer: Inhibit electron flow from complex I to CoQ What does antimycin A do? correct answer: blocks complex III What does Cyanide, azide and Co do? correct answer: Inhibit complex IV what does oligomycin do? correct answer: inhibits ATP synthase, by binding to c subunit of ATP synthase blocking the flow of protons What are uncouplers? correct answer: disconnect ATP synthesis from electron flow, have ability to transport protons across i...