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Which enzyme is responsible for the replication of chromosome ends in germ cells and certain proliferating somatic cells? DNA polymerase $\delta$ ODNA ligase Otopoisomerase O geminin telomerase

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Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy $\Delta H$ and reaction entropy $\Delta S$. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction observations conclusions A This reaction is faster above 131. °C than below. $\Delta H$ is (pick one) $\Delta S$ is (pick one) B This reaction is spontaneous only above 30. °C. $\Delta H$ is (pick one) $\Delta S$ is (pick one) C This reaction is always spontaneous, but proceeds faster at temperatures below -16. °C. $\Delta H$ is (pick one) $\Delta S$ is (pick one)

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How many subsets does the set {1, 2, . . . ,n} have that contain no two consecutive integers? or an ice cream for 2 dollars. In how many ways can we spend the money?

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What are the two basic classifications under which most potential financial goals fall?

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1. The COVID-19 outbreak has affected people's life in many aspects. One example is that people may dine out less in order to reduce the risk of infection. The table below provides the number of food-away-from-home meals consumed a week by 10 individuals before and during the COVID-19 outbreak. Using these data, examine if people dine out less in response to the COVID-19 outbreak at the 5% significance level. Assume the data do not follow the normal distribution. Time 1 Before 12 During 15 2 18 14 3 4 11 21 12 9 5 6 7 8 13 19 18 21 18 10 9 9 10 14 21 12 18 2. Despite the potential health threats from COVID-19, people in some countries are less cautious than people in other countries. One possible reason is cultural differences. For example, many Americans do not wear face masks when sick in public. To investigate whether there is a difference in wearing a mask between America and Taiwan, a researcher collected data on the number of days wearing a face mask within a month among 10 Americans and 12 Taiwanese. At the 5% significance level, can we conclude that there is a difference in wearing a mask between America and Taiwan? Suppose the data do not follow the normal distribution. Country 1 America 4 Taiwan 29 2 0 7 3 4 25 10 23 27 5 2 17 6 7 12 27 22 11 8 8 25 9 10 11 14 28 12 27 29 12 7 3. During the COVID-19 pandemics, it is important to ensure people have access to face masks without difficulty. In response to the large demand for face masks, the Taiwanese government has opened three outlets for face masks. They are (a) pharmacy stores, (b) vending machines, and (c) online orders. A researcher is interested in whether people respond differently to these outlets in terms of satisfaction. A random sample of people was asked to rate how satisfied they are regarding the outlets using a 1-20 scale, with a higher score indicating better satisfaction. Given the data below, conduct a test to examine whether there is a statistical difference in the mean satisfaction score across different outlets at the 5% significance level. Assume the data do not follow the normal distribution. Outlet Pharmacy stores Vending machines Online orders 9 9 18 13 1 7 14 6 10 9 3 7 14 19 12

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? 0 t •At the beginning, the object is at the origin. •Which graph best represents the position x? (a) (b) (c) (d) (e) •Which graph best represents the acceleration a? (a) (b) (c) (d) (e) p. 42

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In the equation $y = \beta_0 + \beta_1x + u$, what is the estimated value of $\beta_0$? a. $\sum_{i=1}^{n} xy$ b. $\bar{y} - \hat{\beta_1}\bar{x}$ c. $\bar{y} + \hat{\beta_1}\bar{x}$ d. $\frac{\sum_{i=1}^{n} (x_i - \bar{x})(y_i - \bar{y})}{\sum_{i=1}^{n} (x_i)^2}$

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A 400 picogram sample of has a density of 1.526 g/cm³. Calculate its volume in cubic inches? [1 in= 2.54 cm]. 3.11 X 1010 in³ 2.70 X 10-10 in³ 4.42 X 109 in³ 1.60 X 10-11 in³ 4.42 X 109 in³

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• Q2 (43 points). Op-amp based Differentiator. Part 1 Implementation (28 points). Wire the differentiator circuit (Figure 7-2) in breadboard. Set input: 1KHz, 1V (peak-peak) sine wave. Using oscilloscope to capture input and output waveform for report. Repeat this for 1KHz, 0.1V (peak-peak) triangle and square wave inputs (With 0 DC offset). • Part 2 Simulation (15 points). Do transient simulation of the Differentiator circuit in Figure 7-2 with different input waveform: i. 1KHz, 1Vp-p, sine wave which minimum voltage is - 0.5V, and maximum voltage is 0.5V. ii. 1KHz, 0.1Vp-p, triangle wave which minimum voltage is -0.5V, and maximum voltage is 0.5V. iii. 1KHz, 0.1Vp-p, square wave which minimum voltage is -0.5V, and maximum voltage is 0.5V. Remember to set initial voltage (IC) of the capacitor to 0V. Implementation: 4 figures are required, 1 for the breadboard, and three for the captured waveforms from the oscilloscope. On the Oscilloscope, you need to capture the input and output, and measure theirr peak-to-peak voltage and frequency. Simulation: Capture at least 2 complete cycles of input and output. Include schematics and graphs in the report. For the triangle wave, you need to adjust voltage offset (VO) and fall time (TF) to make your input looks right. For the square wave, you need to add an addition DC offset to achieve the proper DC offset.

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Solve the following matrix equation for X, assuming matrices X, A, and B are all the same size. (Answers involving variables are case sensitive.) 7X - 8A = 5B - 6X X =

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