QUESTION 31

1. Semiconservative replication of DNA means that:

QUESTION 32

1. How is synthesis terminated in DNA Replication?

QUESTION 33

1. Where in the cell does Transcription occur?

QUESTION 34

1. What DNA sequence dictates which of the two DNA strands (of a DNA molecule) will function as the template for transcription?

QUESTION 35

1. RNA Polymerase requires a primer to synthesize RNA.

True

False

QUESTION 36

1. Which of the following enzymes is responsible for ensuring that genetic material at the end of the chromosome is not lost during DNA replication?

QUESTION 37

1. What attracts or directs the synthesis enzyme to the template in Transcription?

QUESTION 38

1. mRNA transcripts must be processed before transport out into the nucleus. Which of the following lists all of the modifications made to a pre-mRNA transcript?

QUESTION 39

1. Which of the following statements is INCORRECT about promoters?

QUESTION 40

1. Where does synthesis of the product actually begin in Translation?

1. A sample of 10 employees in the graphics department of Design, Inc. is selected. The employees’ ages are given as follows: 34 35 39 24 62 40 18 35 28 35 Compute the interquartile range of ages. a. 1 b. 11 c. 42 d. 44 e. None of these responses

2. The average grades of a sample of 8 statistics students and the number of absences they had during the semester are given as follows: Student # Absences Average Grade 1 1 94 2 2 78 3 2 70 4 1 88 5 3 68 6 4 40 7 8 30 8 3 60 Compute the sample covariance.

a. -0.915 b. 2.268 c. 22.168 d. -46 e. None of these responses

A travel agent (TA) in Athens named “Thomas o Mageiras” has contracts with 135
hotels from all categories (stars) in the three major Greek summer destinations,
namely Crete, Ionian Islands and South Aegean Islands. In order to better support its
clients the TA yearly collects and updates data regarding the performance of these
hotels.
The dataset in the table that follows, provides various measures of
all 135 hotels, summarized in the following variables:
Variables Description
STARS Hotel class category
Total_Rooms Total number of rooms per hotel

Region_ID

1= Crete
2=Southern Aegean Islands
3=Ionian Islands

ARR_MAY Average Room Rate in May (in €)
ARR_AUG Average Room Rate in August (in €)
L_COST Labor cost per hotel (in €)
Note: The empty cells in the given Excel spreadsheet indicate missing values.

Question 1:
1.1 Construct the frequency distribution, the percentage distribution and the frequency
histogram of the variables ARR_MAY and ARR_AUG for ALL 135 hotels. Use
the same class width = 25 for both frequency distributions. Comment on the
characteristics of the distributions.
1.2 Construct separately, the frequency distributions and the percentage distributions
of the variable ARR_AUG for each of the three destinations. Use the same class
width = 35 for each of the three frequency distributions.
1.3 Construct separately, the frequency distributions and the percentage distributions
of the variable ARR_MAY for hotels with a) Number of rooms ≤ 50 considered
as small size hotels b) Number of rooms > 50 considered as large size hotels. Use
the same class width = 25 for both frequency distributions.

1.4 Plot three histograms of the frequency distributions of the variable ARR_AUG,
one for each of the three destinations, and comment on the main characteristics of
the three distributions.
1.5 Plot two histograms of frequency distributions of the variable ARR_MAY, one
for the small and one for the large size hotels, and comment on the main
characteristics of the two distributions.
1.6 What conclusions can you reach concerning the differences in distribution a) of
ARR_AUG among the three destinations and b) of ARR_MAY between the
small and the large size hotels?

Jamal and Demetrius are both 25 and plan to invest $5000 each year for the next 40 years for retirement. Jamal plans to invest in the Vanguard Total U.S. Stock Market Fund which he thinks has a "gross" expected annualized return of 8.00%. However, its "net" expense ratio is 7.95% as Vanguard charges a 0.05% expense ratio. Demetrius, by contrast, has chosen an actively-managed fund which also has a "gross" expected annualized return of 8.00%. However, the XYZ Corporation that runs the fund charges a typical 0.75% annual expense ratio so the "net" expected return is 7.25%. How much more is Jamal "expected" to have after 40 years of investing than Demetrius?

USING SQL

Create a table named Zones with the attributes and assumptions indicated below.

• Attributes: the zone ID, the lowest and the highest accepted temperature.

Assumptions: the ID will be the primary key and have one or two digits, the temperatures (in Fahrenheit) will be at most two digits and a possible minus sign, none of the temperatures can be NULL.

Populate table Zones so that it has the following rows:

3. Deliveries

The same flower vendor wants to use a code to explain the type of delivery for each flower. Create a table named Deliveries with the attributes and assumptions indicated below.

• Attributes: the delivery ID, the category or type of delivery, and the size of the delivery.

• Assumptions: the ID will be the primary key and have one one digit, the category will be at most five characters (pot, plant, hedge, shrub, tree), and the delivery size will be up to five digits with three decimal spaces (possibly NULL).

Populate table Deliveries so that it has the following rows:

3. FlowersInfo

Create a table named FlowersInfo with the attributes and assumptions indicated below. Choose the most appropriate data types.

Attributes: an ID with three characters, common name, Latin name, the coolest and hottest zones where it can be grown, the delivery category, and the sun needs.

Assumptions: The ID will be the primary key, the attribute common name may have up to thirty characters, and the Latin name up to thirty-five characters. The attributes coolest zone, hottest zone, and delivery category will match the IDs from other tables, and the sun needs will be up to five characters, S for Sun, SH for Shade, P for Partial sun and any combination (StoP, StoSH, etc.). Your table definition should implement referential integrity whenever possible.
Populate table FlowersInfo so that it has the following rows:

4. Queries

Write SQL statements to answer the following queries. Write a comment header right before each SQL statement with the letter of the query answered by the statement.

a) the total number of zones.

b) the number of flowers per cool zone.

c) common names of the plants that have delivery sizes less than 5.

d) common names of the plants that require full sun (i.e., sun needs contains ‘S’).

e) all delivery category names order alphabetically (without repetition).

f) the exact output (note that it is order by Name):

Below is a list of jobs that must be accomplished to complete the new project. Assume the company wants to complete the project as early as possible, a) what is the added project cost?

You need not to show the network diagram.

b) What is project management?

______________________________________________________________________________________________________________________________________________________

import sys

var = 1
print(var)

def function1(myVar):
    print(myVar)
    var = myVar + 1
    print(var)
    function2(var)

def function2(myVar):
    print(myVar)
    var = myVar + 1
    print(var)
    function3(var)

def function3(myVar):
    print(myVar)
    var = myVar + 1
    print(var)

def main(argv):
    var = 10
    print(var)
    function1(var)

if __name__=="__main__":
    main(sys.argv)

1. As the program runs, what is the first line that will be interpreted by Python, and what action will be executed?

2. What will be printed on line 7?

3. What will be printed on line 9?

4. What will be printed on line 13?

5. What will be printed on line 15?

6. What will be printed on line 19?

7. What will be printed on line 21?

8. What will be printed on line 25?

9. What is the scope of the variable at line 3?

10. What will happen if a command line argument other than the script name is passed to this program?

During April, the following changes in the single inventory product took place:

          April   1     Balance                        1,400 units @ $24

                      8     Purchased                      900 units @ $36

                    12     Purchased                      700 units @ $30

                    24     Purchased                      400 units @ $50

                    10     Sold                              1,500 units @ $40

                    26     Sold                              1,700 units @ $44

Calculate the COGS after each sales transaction and the ending inventory after each transaction under the following methods.

(a)   FIFO.

(b)   Average Cost. (round numbers to the nearest 10)

During June, the following changes in inventory item 27 took place:

            June   1     Balance                         1,400 units @ £24

                    14     Purchased                        900 units @ £36

                    24     Purchased                        700 units @ £30

                      8     Sold                                 400 units @ £50

                    10     Sold                              1,000 units @ £40

                    29     Sold                                 500 units @ £44

Perpetual inventories are maintained in units only.

Instructions

What is the cost of the ending inventory for item 27 under the following methods? (Show calculations.)

(a)   FIFO.

(b)   Average Cost.

Experiments with isolated mitochondria showed that organic compounds are oxidized and O2 is consumed only when ADP is included in the preparation. When the ADP supply runs out, oxygen consumption halts. Explain these results.