Why is redundancy built in the DNA code? Can a triplet codon for more than one amino acid or can amino acids be synthesized by more than one triplet of codons? How many codons code for 20 amino acids?

Why does mRNA have to be processed in eukaryotes and what does involve?

What translates the DNA message and how? Explain what tRNA does. How is it possible to have 45 tRNA but 61 mRNA to code for the same amino acids?

Explain how a ribosome works to generate a protein. Be sure to start with 2 ribosomal subunits coming together, and include the A,P,E sites in your explanation.

The State of DeNile built a new toll road 3 years ago for $900 million. The state can charge tolls on the road for the next 20 years and expects to spend $3 million per year on maintenance and toll collection. Toll revenue is expected to be $80 million per year. The state has recently received an offer from the Otto Corporation to lease the road for 20 years. The company will pay DeNile $1 billion and will receive exclusive rights to collect and keep the tolls. Otto Corp will also be responsible for all maintenance and other expenses. The state can invest its money at 6% annual return. Should the state take this offer? Why or why not?

A sump pump (used to drain water from the basement of houses built below the water table) is draining a flooded basement at the rate of 0.55 L/s, with an output pressure of 2.95 × 105 N/m2.

A. The water enters a hose with a 2.8 cm inside diameter and rises 2.2 m above the pump. What is its pressure at this point N/m2? You may neglect frictional losses.

B. The hose goes over the foundation wall, losing 0.65 m in height, and widens to 4.6 cm in diameter. What is the pressure now in N/m2? You may neglect frictional losses.

This case is based on an actual situation. Centennial Construction Company, headquartered in Dallas, Texas, built a Rodeway Motel 35 miles north of Dallas. The construction foreman, whose name was Slim Chance, hired the 40 workers needed to complete the project. Slim had the construction workers fill out the necessary tax forms, and he sent their documents to the home office.Work on the motel began on April 1 and ended September 1. Each week, Slim filled out a timecard of hours worked by each employee during the week. Slim faxed the timecards to the home office, which prepared the payroll checks on Friday morning. Slim drove to the home office on Friday, picked up the payroll checks, and returned to the construction site. At 5 p.m. on Friday, Slim distributed payroll checks to the workers.Requirements1. Describe in detail the main internal control weakness in this situation. Specify what negative result(s) could occur because of the internal control weakness.

1.If an inverting voltage amplifier with a large gain were built to amplify a small sinusoidal
signal and the output waveform was observed to be sinusoidal but with a much lower
amplitude than predicted by a theoretical analysis assuming an ideal operational amplifier,
what non ideal property of the operational amplifier would be likely contributing to this
degradation in performance?
40

warpbreaks is a built-in R dataset which gives This data set gives the number of warp breaks per loom, where a loom corresponds to a fixed length of yarn. We are interested in some descriptive statistics related to the warpbreaks dataset. We can access this data directly and convert the time series into a vector by using the assignment x <- warpbreaks$breaks. (In R, use ? warpbreaks for info on this dataset.) The values of x if assigned as above are:


[1] 26 30 54 25 70 52 51 26 67 18 21 29 17 12 18 35 30 36 36 21 24 18 10 43 28 15
[27] 26 27 14 29 19 29 31 41 20 44 42 26 19 16 39 28 21 39 29 20 21 24 17 13 15 15
[53] 16 28

You should get these values from the R assignment rather than manually copying.

h. What proportion of the x values are within 1 sample standard deviations away from the sample mean
i. Calculate the range of x. (one number)
j. How many times does the minimum value of x appear?
k. How many of the elements of x are smaller than the sample mean of x?

1. Luci and Sherry have decided to lease some newly built premises for the purpose of opening a seafood outlet. They intend to provide a wide range of different products, including a variety of seafood for sale and take-away fish and chips.

Discuss the types of economic decisions that they will be required to make, and the information that they will need to make those decisions. Distinguish non-economic and economic information, identify non-economic decisions that they will also be required to make. Discuss why Luci and Sherry may require the services of an accountant.

A high-rise tower built by a developer contains 200 condominium units. The QA department of the developer has to approve the tower before turning it over to sales. The QA department will select a random sample of 8 units and inspect them. If more than three major defects are found in any unit, they will reject the unit as defective. If more than 2 of the 8 inspected units are defective, the entire tower will be rejected. If 10 of the 200 units are known to have more than three major defects, what is the probability that the tower will be rejected?