Numerade

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Question 5 3 pts The transition, n = 5 $\rightarrow$ n = 4, for an electron in the hydrogen atom is cannot be observed with the human eye. Why not? It doesn't occur. The energy is too high. The energy is too low. The energy is so high that it will cause damage to human eye.

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Component: ___Purpose: The polymerase enzyme that extends the primers (adds dNTPs)

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One way scientists hope to use the recent knowledge gained about noncoding RNAs lies with the possibilities for their use in medicine. Of the following scenarios for future research, which would you expect to gain most from RNAs? exploring a way to turn on the expression of pseudogenes looking for a way to prevent viral DNA from causing infection in humans creating knock-out organisms that can be useful for pharmaceutical drug design targeting siRNAs to disable the expression of an allele associated with autosomal dominant disease targeting siRNAs to disable the expression of an allele associated with autosomal recessive disease

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Q3. (a) [5 MARKS] Let us denote the Newton-Cotes quadrature rule for approximating $\int_a^b f(x)dx$ as $Q_n(f) := \sum_{i=0}^n q_i f(x_i)$. Show that $\sum_{i=0}^n q_i = b - a$. (b) [3 MARKS] What is meant by the precision of a quadrature rule? Consider the rule $R(f) = q_0 f(0) + \frac{1}{3} f(\frac{1}{2}) + q_2 f(\frac{3}{4})$ for approximating $\int_0^1 f(x)dx$. (i) [7 MARKS] If this rule has precision 2, determine the values of $q_0$ and $q_2$. (ii) [5 MARKS] What is the maximum precision of $R(.)$ with the values of $q_1$ and $q_2$ that you have determined? (iii) [4 MARKS] Why is $R(.)$ not a Newton-Cotes rule, in the strictest sense?

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Question 2 Which of the following is not a function of prices in a market system? Prices ensure an equal distribution of goods and services among consumers. Prices coordinate economic activity. 1 pts Prices send signals to buyers and sellers to help them make rational economic decisions. Prices have the crucial job of balancing supply and demand. Question 3 In a free, competitive market, what is the rationing mechanism? buyer bias government law prices seller bias 1 pts

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Scarcity implies that people must O make choices. O be selfish. O not be selfish. O be miserable.

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2 ?? 3 ?? 3 V + 1 mA Figure 4.1 – Network for question 4 A B

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Enzymes 1. Enzymes are proteins that act as catalysts, slowing down the rate of reactions. 2. When enzymes catalyze reactions, they are not destroyed in the process. 3. DNA encodes enzymes so it is possible for an individual to have a genetic disorder that causes them to lack a specific enzyme. 4. One enzyme can facilitate many different reactions.

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then click in the white box to add it; hydrogens will be added automatically. Use the same settings as described in the procedure to first perform a geometry optimization, and then perform an electronic energy calculation. Report the electronic energy below in kJ/mol. electric = - 147511.971 kJ/mol enovy 2. Start a new job in Chem Compute. This time, input two molecules of ammonia: add the first molecule in the same manner as above, then click the NEW button, and add another N atom a little below the first molecule. Perform a geometry optimization, then perform an electronic energy calculation. Report the electronic energy below in kJ/mol. electronic = - 293931.223 kg/mol enovy 3. Draw the two molecules in 3D as they appear after your final calculation from above. $NH_3$ $(3D)$ $NH_4$ 4. Calculate the binding energy for the pair of ammonia molecules. 5. What type of intermolecular force is being modeled here? $\rightarrow$ Hydrogen Bond 6. The hydrogen bond for a pair of water molecules has a binding energy of about -30 kJ/mol. How does your value for the ammonia molecules compare? Which is a stronger interaction?

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Explain what is the importance (use) of footnotes in balance sheets, and describe the use of consolidated financial statements.

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sherry f.