Lowering the water activity of a food will inhibit the growth of microorganism in which of the following ways:
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- (a) Propose a biosynthetic pathway to the secondary metabolite, B. OH H. HO Metabolite B I IYou are evaluating a chemotherapeutic agent whose mode of action involves increasing Cytochrome C release from the mitochondria of treated cells - this drug most likely promotes the activity of this protein; Group of answer choices BAX BCL2 BHI-4 BCL-XL5)A certain aerobic organism is able to metabolize the followingglycolipid CH,OH H H OH HO OH
- The 2 sources of TAGs in adipose tissues are? VLDL IDL LDL ChylomicronsThe enzyme Y catalyzes the elementary reaction AB→A + B An enzyme concentration of 1.0 µM Y can convert a maximum of 0.5 µM AB to the products A and B per second. Note: Since the concentrations of species in the cytoplasm of cells is small, the concentration unit of micromolar (uM or 10-6 M) is used for consistency with biochemical systems.7. An enzyme-catalyzed reaction proceeds by the mechanism below: B. E+S1→ ES --2E+P E+A 3 EA EA+S4 EAS --5 EA + P E+I 6 EI EAS+I7 → EAIS -8 EIS + P K. macronutrient L. enzyme activator/cofactor M. liposome N. anaerobic process O. aerobic process E = enzyme, S = substrate, I = inhibitor, P = product and A = activator Rate constants (k's) for the forward reactions are: kı, k2, k3, k4, k5, k6, k7, and ks Rate constants (k's) for the reverse reactions are: k-1, k-3, k-4, k-6, and k-7 Write the enzyme balance for this mechanism. 4 How many total equations will result from applying the RAPID EQUILIBRIUM ASSUMPTION? Using any concentrations of species in the mechanism and any of the rate constants (k's), write ONE of the
- Which type of enzyme is directly involved in causing cellular damage during the disease process? O Exoenzyme O None of the listed answers are correct. O EndoenzymeIf an organism is said to be a chemoautotroph, which of the following statements is true? The organism could be a mammal. The organism is able to synthesize its own food by breaking apart chemical bonds in inorganic compounds. O The organism must eat organic compounds in order to obtain energy. The organism depends on sunlight for manufacturing it's own food ene10. Pharmaceutical ingredients are susceptible to microbial attack. Which ONE of the following statements about contamination of a medicine is CORRECT? O Anionic surfactants are generally stable but the alkyl and alkylbenezene sulphonates are readily metabolised. O Humectants, such as sorbitol and glycerol, are readily metabolised when present in a medicine at high concentrations. O Fats and oils are usually attacked when dispersed in non-aqueous formulations. O Sweetening, flavourings and colouring agents are ready substrates for bacteria but in low concentrations are resistant to degradation. O Organic polymers used as thickening agents are subject to microbial polymerisation.
- Proteins/enzymes that can be regulated allosterically I. show a hyperbolic Michaelis-Menten curve II. can be regulated by molecules that differ structurally froma substrate III. can be both activated and inhibited IV. undergo only competitive inhibition O 1, III and IV O 1, II, III and IV O l and II O Il and III O , Il and III1). SIM Tubes and TSI slants turn black if the organism is able to reduce iron compounds. For which organism(s) below would you expect a black reaction? Circle all that apply. Escherichia coli. Proteus vulgaris. Salmonella typhimurium. Alcaligenes faecalis. Shigella flexneri. 2). If Citrate is a sugar and fermentation generates an acid, why does the BromThymol Blue indicator in the media turn blue and not yellow? 3). Why is Salmonellosis associated with eggs? Can you get Salmonellosis from other animal sources?A biologics production process uses a series of vats to make pharmaceuticalproducts. Each vat contains a mixture of compounds and live organisms (e.g., bacteria) andmust be strictly controlled in terms of temperature, acidity, and other factors. Storage tanksare used between production steps. If a storage tank is full, the upstream batch is held in asteady state before it can be transferred to the storage tank. This is an example of which ofthe following?a. Balkingb. Blockingc. Renegingd. Starving
