University of Toronto (U OF T )

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 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...

agarose and agar correct answer: polysaccharides used to run DNA gels and for microbial plates bacterial cell walls correct answer: contain polysaccharides in their peptidoglycan layer lectins correct answer: are proteins that bind to sugars protein glycolsylation correct answer: assists in folding and cellular recognition, e.g. ABO blood groups -ose correct answer: indicates a molecule is some kind of carb blood group antigens correct answer: glycoproteins containing differ...

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-...

Monosaccharide formula correct answer: (CH2O)n (n is 3 or more) Aldotriose correct answer: Also known as glyceraldehyde, simplest aldehyde monosaccharide (n = 3), has L and D isomer (centre carbon is chiral) Ketotriose correct answer: Also known as dihydroxyacetone, simplest ketone monosaccharide (n = 3), non chiral Carbon numbering correct answer: Aldoses always have aldehyde and C1, ketoses have ketone at C2 Sugar naming correct answer: triose, tetrose, pentose, hexose, etc., ...

BCH210 Week 4 Questions With Complete Solutions

van der Waals correct answer: -weakest (short lives) but lots could strengthen the bond -furthest distance -form as a result of hydrophobic interactions -strength depends on the size of the atoms and the distance between them -cannot be closer than the Van der Waals contact distance or else positively charged nuclei will repel each other (energy= 0) Proteins correct answer: main action molecule of the cell (Most chemical processes of the body are carried out by proteins) -classified in...

True or False: the amino acids serine and methionine both contain sulfur atoms. correct answer: false True or False: The following secondary structure shown below is an example of a beta-turn. correct answer: False True or False: The side chain of proline is bonded to the backbone nitrogen atom. correct answer: True True or False: The name of the molecule that binds to an enzyme is called the apoenzyme. correct answer: False True or False: An inhibitor that binds at the active si...

Which of the following monosaccharides is a ketose? Dihydroxyacetone Galactose Glucose Glyceraldehyde Idose correct answer: dihydroxyacetone When two carbohydrates are epimers: One is a pyranose, the other a furanose One is an aldose, the other a ketose They differ in length by one carbon They differ only in the configuration about one carbon atom They react differently with iodine correct answer: They differ only in the confirmation about one carbon atom correct answ...

True or False: According to the Module, a compound with a molecular mass of 1,000 g/mol is considered a macromolecule. correct answer: False True or False: Biomolecules can have two or more different functional groups. correct answer: True True or False: The following functional group is an amine. C2H5NH2 correct answer: True True or False: In a eukaryotic cell, the organelles called peroxisomes serve the purpose of digesting macromolecules. correct answer: False True or Fals...