7.

During the development of a frog's fertilized egg, the following takes place:

8.

1. Find the incorrect description.

   	A.	Light Microscopy — Usually has a resolution of 0.2 µm and a maximum magnification of 1000X. Light goes through the specimen. It usually requires staining of specimens (cells, tissue slices)
   	B.	Confocal Microscopy — Allows visualization of cells in three dimensions because it takes images in optical sections and integrates them using computer power.
   	C.	Atomic Force Microscopy — Similar in principle to light microscopy, but uses an electron beam instead of photons. Enlargement up to 106X and resolution of biological specimens about 1 nm.
   	D.	Fluorescence Microscopy — Excitation light is absorbed by fluorescent probes in the specimen and reemitted at a lower energy, i.e., a longer wavelength.

9.

1. During titration of glycine with HCl, what is the proportion of ⁺H₃N–CH₂–COO^– /⁺H₃N–CH₂–COOH at pKa₁?

   	A.	75%/25%
   	B.	0%/100%
   	C.	50%/50%
   	D.	25%/75%

11.

1. Consider the compound pairs below:

   1. HCHO, CH₃CHO (formaldehyde, acetaldehyde)
   2. CH₄, CH₃CH₃ (methane, ethane)
   3. HCOOH, CH₃COOH (formic acid, acetic acid)
   4. CH₃OH, CH₃CH₂OH (methanol, ethanol)
   5. CO₂, CO (carbon dioxide, carbon monoxide)

   What is their correct order, from the most oxidized to the most reduced?

   	A.	v > iii > i > iv > ii
   	B.	i > iv > ii > v > iii
   	C.	i > ii > iii > iv > v
   	D.	v > iv > iii > ii > i

BUCK FILTER TRANSFER FUNCTION (CCM) USING MATLAB

I. State-space Modelling and Transfer Function of Ideal Buck Converter

1. Write the AC state-space for an ideal Buck Converter under CCM, given
the state-variables iL^(t) and vc^(t),
input variables d^(t) and vs^(t), and
output variables iL^(t) and vc^(t).

2. Create the state-space model in Matlab using R=5/3 ohms, L=10 uH, C=242 uF, Vs=Vin= 20 V, Vo = 5 V, D=5/20

3. Extract the transfer functions from the state-space model.
vo^(s)/vs^(s),
vo^(s)/d^(s),
iL^(s)/vs^(s),
iL^(s)/d^(s)

4. Write the expressions for the transfer functions.

5. Plot the pole-zero maps, step-responses, and Bode plots of the transfer functions.

II. State-space Modelling and Transfer Function of Buck Converter with Parasitics

1. Write the AC state-space for an ideal Buck Converter under CCM, given
the state-variables iL^(t) and vc^(t),
input variables d^(t) and vs^(t), and
output variables iL^(t) and vo^(t).

2. Create the state-space model in Matlab using R=5/3 ohms, L=10 uH, C=242 uF, Vs=Vin = 20 V, Vo = 5 V, D=5/20, rL=25mohm, rC=25mohm

3. Extract the transfer functions from the state-space model.
vo^(s)/vs^(s),
vo^(s)/d^(s),
iL^(s)/vs^(s),
iL^(s)/d^(s)

4. Write the expressions for the transfer functions.

5. Plot the pole-zero maps, step-responses, and Bode plots of the transfer functions.

Refer to the T-note and T-bond quotes in Table 6-1

a. What is the asking price on the 2.750 percent November 2023 T-bond if the face value of the bond if the face value bond is $10,000 ?

b. What is the bid price on the 0.500 percent August 2016 T-note if the face value of the bond is $10,000

(For all requirements, round your answer to 2 decimal places. (e.g., 32.16))

a. The Ask price ______

b. The Bid price ______

Maturity. Coupon Bid. Asked Chg. Asked Yield

11/15/2023 2.750 107.5234 107.5391 0.0703 1.673

8/31/2016 0.500 100.0391 100.0547 0.0234 0.296

Solve the following problems: Using the balance sheet below:

• create a balance sheet for 2016 and 2017.
• make a list of working capital accounts.
• what is the net working capital for 2016 and 2017?
• What is the change in net working capital for 2017?

Balance Sheet Accounts of SimpleTec Corporation

Account Balance 12/31/2013 Balance 12/31/2014

Accumulated Depreciation $2,030 $2,680

Accounts Payable $1,810 $2,070

Accounts Receivable $2,490 $2,700

Cash $1,310 $1,100

Common Stock $5,000 $5,000

Inventory $5,810 $6,040

Long-Term Debt $7,810 $8,210

Plant, Property & Equipment $8,410 $9,210

Retained Earnings                             $1,380                                    $1,100

House prices: Data from the National Association of Realtors indicate that the mean price of a home in Denver, Colorado, in December 2016 was 366.5 thousand dollars. A random sample of 50 homes sold in 2017 had a mean price of 396.3 thousand dollars. a. Assume the population standard deviation is σ = 150. Can you conclude that the mean price in 2017 differs from the mean price in December 2016? Use the α = 0.05 level of significance. b. Following is a boxplot of the data. Explain why it is not reasonable to assume that the population is approximately normally distributed. c. Explain why the assumptions for the hypothesis test are satisfied even though the population is not normal.

Barbara sold three assets during 2017. How much and what kind of gain or loss does she recognize from each sale? What tax rate applies to the net gain if Barbara's ordinary income is taxed at 25 percent?

a. On February 25 she sold 200 shares of XYZ stock for $19,000. She bought that stock for $16,000 on February 23, 2016.

b. On July 20 she sold an antique automobile for $30,000 that she purchased for $31,000 on July 21, 2016.

c. On August 2, she sold qualified small business stock for $28,000 that she had purchased for $20,000 on December 19, 2008.

Following are the most recent balance sheets for King Fisher Aviation.

Excluding accumulated depreciation, determine whether each item is a use of cash, and the amount:

Fill in the values in the spreadsheet.

On January 1,2016, McKeown, Inc., issued $250,000 of 8%, 9year bonds for $220,776, yielding a market (yield) rate of 10%. Semiannual interest is payable on June 30 and December 31 of each year.

a) Show computations to confirm the bond issue price

b) Prepare journal entries to record the bond issuance, semiannual interest payment and discount amortization on June 30, 2016, and semiannual interest payment and discount amortization on December 31, 2016. Use the effective interest rate.

c) Post the journal entries from part b) to their respective T-accounts

d) Record each of the transactions from part b) in the financial statement effects templat

Sparrow Company uses the retail inventory method to estimate ending inventory and cost of goods sold. Data for 2016 are as follows:

Cost Reatail

Begining inventory. $90,000. $180,000

Purchases 335,000. 580,000

Freight in 9,000   

Purchase returns. 7,000 11,000

Net markups 16,000

Net markdowns 12,000

Normal spoilage 3,000

Abnormal spoliage. 4,800 8,000

Sales 540,000

Sales returns 10,000

The company records sales net of employee discounts. Discounts for 2016 totaled $4,000.

Required:

Estimate Sparrow’s ending inventory and cost of goods sold for the year using the retail inventory method and the following applications:

1. Average cost

2. Conventional

11.5) Brandywine Clinic, a not-for-profit business, had revenues of $12 million in 2016. Expenses other than depreciation totaled 75 percent of revenues, and depreciation expense was $1.5 million. All revenues were collected in cash during the year, and all expenses other than depreciation were paid in cash.

1. Brandywine’s 2016 income statement.
2. Brandywine’s net income, total profit margin, and cash flow.
3. Depreciation doubled. Brandywine’s net income, total profit margin, and cash flow.
4. Depreciation halved Brandywine’s net income, total profit margin, and cash flow.
5. Reason for similarities or differences in parts b, c, and d.