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- Which of the following is a prosthetic group that may be found in the active site of an enzyme? a) zinc ion b) glycine amino acid c) hydrogen ion d) glucose-1-phosphate e) acetyl groupWhich of the following membrane lipids have a direct glycosidic linkage between the head- group sugar and the backbone glycerol? a) Ether lipids b) Sphingolipids c) Glycolipids d) Phospholipids (Ctrl) - TSelect the term in column B which best matches the description in column A. There are more terms then needed. Column A Column B 1. The pentose sugar found in DNA. a) Cis fatty acid b) Trans fatty acid c) Coenzyme d) Cofacipr 2. Commonly referred to as "insoluble fiber". 3. Considered to be an amphipathic molecule. 4. A molecule with the formula C18H3602 is probably a e) Phospholipid 5. Bond created during the formation of the primary structure of a protein. ) Glycogen 6. A non-protein organic molecule needed for proper enzyme functioning. g) Cellulose 7. Pyrimidine base found only in RNA. h) Galactose i) Fructose 8. Increasing the number of these molecules in the cell membrane would increase the permeability of the cell membrane. i) Thymine k) Uracil 9. Bond which connects nucleotide monomers together. 1) Fatty acid m) Disaccharide n) Peptide bond o) A-Helix p) B-Pleated Sheet q) Ribose r) Deoxyribose 10.
- Eicosanoids and endocannabinoids, which are hormone-like substances, are made from which fatty acid? ? a) kinetic acid b) oleic acid c) linolenic acid d) arachidonic acid Sphingomyelin differs from phosphatidyl choline in that: a) kinetic acid is absent in sphingomyelin b) sphingosine replaces glycerol in sphingomyelin c) sphingomyelin contains 2 choline molecules Which of these lipids contains no fatty acids? a) cerebrosides b) lecithin c) cholesterol d) plant oils Which of these is an ABC transporter? a) Na/K pump b) MDR protein c) Na/Ca antiporter d) Na/glucose symporter In an ion channel, the part of the channel protein which specifically binds to the ion is called: a) a voltage-gated channel b) a ligand-gated channel c) an antiporter d) a selectivity filter Symporters and antiporters may transport one chemical species against its concentration gradient. Energy for this is obtained from: a) ATP b) NADH via oxidative phosphorylation c)…Which of these is an ketohexose? a) fructose b) glucose c) ribose d) erythrose Which of these is a constitutional isomer of d-glucose? a) fructose b) galactose c) l-glucose d) ribose Which of these is an enantiomer of d-glucose? a) d-fructose b) d- galactose c) l-glucose d) d-ribose Which of these is a diastereomer of d-glucose? a) d- fructose b) d-galactose c) l-glucose d) d-riboseWhich of the following condenses acyl and malonyl groups? a) Acetyl co-A ACP transacetylase b) Malonyl co-A ACP transferase c) ß-ketoacyl ACP synthase d) Acyl carrier protein
- What following compound can be found with a tyrosyl unit? A) Glycosyl phosphatidyl inositol B) Sphingosine 1 -phosphate C) Glycogen D) Serotonin E) S-glutathioneWhich of the following amino acids can act as nucleophiles in a protease active site (choose all that apply): a) Cysteine b) Alanine c) Leucine d) Serine e) Threonine1) The smallest monsaccharides that can exist are: a) Pentoses b) Trioses c) Hexoses d) Tetroses 2) The structure of D-galactose differs from that of D-glucose at: a) carbon 1 and carbon 2 b) carbon 6 c) carbon 5 d) carbon 4 4) Which of the following pairs of monosaccharides contain different number of carbon atoms? a) gulose and tagatose b) glucose and galactose c) glyceraldehyde and dihydroxyacetone d) fructose and ribose
- Which of the following is a storage form of lipid?a) Glycolipidb) Phospholipidc) Sufolipidd) Triacyl glycerolThe side chain of asparagine contains: OA) a hydroxyl group B) an amine group OC) a carboxyl group OD) a sulfydryl group OE) none of the aboveIn the deoxy state, Histidine forms an ______ salt bridge with aspartate and an ______ salt bridge with lysine in the deoxidized state. a) Intra-chain; Intra-chain b) Intra-chain; inter-chain c) Inter-chain; Inter-chain d) Inter-chain; Intra-chain