The intensity of the sound of traffic at a busy intersection was mea.pdf

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The intensity of the sound of traffic at a busy intersection was measured at 2.0 × 101 W/m2. Find the decibel level. (Round your answer to the nearest whole number.) Solution Sound intensity of traffic at a busy intersection is given by I = 2×10^1 W/m². Now, Reference sound intensity Io = 10^12 W/m² (Threshold of hearing) Reference sound intensity level LIo = 0 dB (Threshold of hearing level) we need to find sound intensity level LI in dB when entering sound intensity I = 2×10^1 W/m². Sound intensity level LI = 10×log (I / Io) dB = 10×log (2×10^1 / 10^12)=10*11.30 dB = 113.01 dB =113dB on round off.

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Which of the following statements about pyruvate is most accurate? Pyruvate can be produced only from carbohydrates; Pyruvate dehydrogenase complex does not belong to the Krebs cycle. Therefore, pyruvate dehydrogenase is not a step-controlling enzyme for the Krebs cycle; Pyruvate can be reversibly converted to phosphoenolpyruvate by pyruvate kinase; Pyruvate is a main precursor of oxaloacetate in the Krebs cycle; Pyruvate dehydrogenase converts pyruvate to acetyl CoA and generates one NADH that is equivalent to 2ATP if the NADH is transferred to mitochondria via glycerol 3-phosphate shuttle system. Solution Correct answer is B Pyruvate dehydrogenase complex does not belong to Krebs Cycle.Therefore pyruvate dehydrogenase is not a step controlling enzyme for krebs cycle. PDH complex catalyses the conversion of Pyruvate into Acetyl CoA. Acetyl CoA then enters Krebs cycle and forms oxaloacetate. Therefore action of PDH comples does not determine the control of krebs cycle,..

Which of the following statements about pyruvate is most accurate P.pdf

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Which CLI modes let you use the show running-config command? A. User B. Privileged C. Global Configuration D. Setup E. All of the above Solution B is correct. You can run the show running-config command in Privileged (Enable) modes. A, C, D, and E are incorrect. A, C, and D are incorrect because the show running- configcommand is not available in these modes. E is incorrect because choices A, C, and D are incorrect..

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What is meant by \"star activity\" with respect to a restriction enzyme. I just need a 1-2 sentence explanation Solution 1. Star activity is a general property of Restriction endonuclease. 2. During some non-standard reaction conitions, specific restriction enzymes are can cleave the sequences which are similar , but not identical ,to their efined recognition seqences. 3.Such kind of soecificity has been calle \" Star activity\"..

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Type III hypersensitivities are also referred to as immune complex mediated hypersensitivities. Which cell is responsible for clearing the antibody-antigen complexes that are formed? In type I hypersensitivity, prior sensitization to the antigen/allergen is not required because it\'s an immediate type of reaction. True False Which cell types participate in antibody mediated attacks of either cells or red blood cells in type II hypersensitivities? Solution Hypersensitive is the group of unfavourable reactions produced by the normal Immune system. It includes allergies and Autoimmunity. Type-III immunity is immune complex mediated diseases that include Serum sickness, Rheumatoid arthritis etc. The mediators are IgG, complement and Neutrophills. 7. Answer is Macrophages. 8. False: Prior sensitization with allergin, leads to IgE production, then they bind to mast cells. Again encounter wits same allergin, bind to these mast cell bound IgE. Finally leads to degranulation and Type-1 hypersensitivity. 9. All three types of cells: Macrophages, NK cells and Neutrophils.

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True, False, Uncertain with Explanation: (a) Including an interaction term between two independent variables, X1 and X2, allows for the measurement of the effect of a unit increase in X1 and X2, above and beyond the sum of the individual effects of a unit increase in the two variables alone. Solution When an interaction is present, the lines in a graph of the means will not be parallel. Another way of describing the interaction is to say that the effects of one factor are not the same at all levels of the other factor.Also we woll say that “the simple effects are different,” because a simple effect looks at the effects of one factor at each level of the other factor. An interaction effect is a change in the simple main effect of one variable over levels of the second. An A X B or A BY B interaction is a change in the simple main effect of B over levels of A or the change in the simple main effect of A over levels of B.In either case the cell means cannot be modeled simply by knowing the size of the main effects. An additional set of parameters must be used to explain the differences between the cell means. These parameters are collectively called an interaction. If interaction is significant, determine whether interactions are important. If not, can examine main effects If interaction present & important, determine whether interaction is simple or complex. . For simple interactions, can still talk about the main effects of A at each level of B For complex interaction, must simply consider all pairs of levels as separate treatments. If interaction effects are very small compared to main effects or only apparent in a small number of treatments, then they are probably unimportant. We can proceed by keeping interaction in the model, but using marginal means for each significant main effect individually The interaction effect is so large and/or pervasive that main effects cannot be interpreted on their own. This is TRUE statement..

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The garden pea is described as \"self-fertilizing.\" What does this mean and why was this significant to the success of Mendel\'s inheritance experiments? Solution The pea plant which Mendel chose for conducting experiments, is most ideal for controlled breeding, since it can easily be subjected to cross pollination as well as self pollination. This gives the success to Mendel\'s inheritance experiments. The main other resons for mendal success are.

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The equation for the time of one swing of a pendulum is given by T = 2 pi Squareroot L/32 where T is the time in seconds, pi almostequalto 3.14, & L is the length in feet. What is the length of the pendulum if it makes one (1) swing in 4 seconds, according to the formula? Solution T=2*pi*(L/32)^.5 Squaring on both sides (T/(2*pi))^2=L/32 Given time =4 sec L/32= (4/(2pi))^2 L/32= 4/10 L=128/10 L=12.8 Length of pendulum =12.8 units L/32=.

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Some yeasts process xylitol and some cannot. The ability to process xylitol is dominant… so what would you cross a xylitol processing yeast with in other to determine if it is heterozygous or homozygous dominant? Solution A xylitol processing yeast will be crossed with another xylitol processing yeast. If they are homozygous dominant all offspring will be xylitol processing but if they are heterozygous dominant then 25% of the offspring will not process xylitol..

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O’Sullivan’s arguments for annexation. How does he frame his support for such a move and How does he see the future of America? Solution Annexation (Latin ad, to, and nexus, joining) is the political transition of land from the control of one entity to another. In international law it is the forcible transition of one state\'s territory by another state or the legal process by which a city acquires land. O Suulivan was an American columnist and editor who used the term \"manifest destiny\" in 1845 to promote the annexation of Texas and the Oregon Country to the United States. O\'Sullivan was an influential political writer and advocate for the Democratic Party at that time and served as US Minister to Portugal during the administration of President Franklin Pierce (1853–1857), but he largely faded from prominence soon thereafter. He was rescued from obscurity in the twentieth century after the famous phrase \"manifest destiny\" was traced back to him..

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