3.This experiment explores the concept of osmosis, with a hands on experiment using potatoes and salt water in your kitchen at home. Be sure to read the instructions for the potato experiment

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in the lab handout ahead of time so you can get the materials you need for the lab before you do it!

In your prelab, you explored diffusion through a semipermeable membrane. In that activity, small particles could easily pass through the semipermeable dialysis membrane. But all semipermeable membranes are not equal! Before starting this lab, consider the following.

A living membrane is considered to be semipermeable. Is it permeable to the same substances as the dialysis membrane used in prelab? Which of the following substances do you expect to passively move through the plasma membrane of potato cells? Pick all that apply.  

Group of answer choices

sodium ions

chloride ions

water

4.The passive movement of solutes across a living membrane is called  .

The passive movement of water across a living membrane is called  .

Name:                                                                                                          .

A manager of a local clothing retail store wants to make a sales and promotion plan for next month. In order to evaluate the effectiveness of the plan, the manager identifies all the costs and other relevant information and conducts Break-even analysis. Here are the identified costs and other related information.

Monthly rent fees: $2,500

Wages for the hired employees (Monthly): $6,000

Utility fees (Monthly): $700

Other operation costs (Monthly): $1,000

Purchase price per unit: $78   (The manager purchases clothing from other retailers)

Shipping and handling cost per unit: $12

(Assume there is no other cost)

1. What is the total Fixed cost per month?

Answer           9000                                                                                                                                    :                                                                                                                                           

What is the Variable cost per unit?

Answer                            90                                                                                                                   :                                                                                                                                           

The manager wants to have 20% profit margin on selling price. What is the selling price per unit at the retail store?

Answer :         240                                                                                                           :

How many product units must be sold a month to break even?

Answer                   68                                                                                                                            :                                                                                                                                           

What is the revenue at the break-even point?

Answer                         409.09                                                                                                                      :                                                                                                                                           

The manager wants to have total profit of $5,000 a month. How many product units must be sold to achieve this goal?

Answer                                                                                                                                               :                                                                                                                                           

Now the manager considers two marketing promotion options.

Option 1: Advertising on a local cable channel next month. The advertising cost is $2,000.

How many product units must be sold to cover the Total Cost (including the advertising cost)?

Answer                                                                                                                                               :                                                                                                                                           

Option 2: Sales promotion next month (10% price discount on selling price).

.How many product units must be sold to cover the Total Cost (including sales promotion cost)?

Answer                                                                                                                                                                                                                                             

The goal of this laboratory is to acquire the necessary knowledge needed to build and analyze a
basic electrical circuit. You will need to watch two videos introducing the multimeter and the
breadboard. After watching these videos, you will need to answer five relatively short questions
regarding the concept seen in the videos. Note, after much thought, i decided to use two videos
from youtube. The creators of these videos did a wonderful job explaining the different detail
pertaining to these two pieces of equipment.
The video for the multimeter demonstration can be found here:
https://www.youtube.com/watch?v=SLkPtmnglOI
The video for the breadboard can be found here:
https://www.youtube.com/watch?v=6WReFkfrUIk
In the diagram above we have two resistors R1 and R2 connected to a power source V. The points
A,B,C,D,E and F are considered to be solderless connectors. Four wires are connecting the entire
circuit. These wires connect the point A and B, B and C, D and E and finally E and F together. Any of
the wires, or electrical components, could be removed to make a measurement. Refer to this
diagram for question 1 to 4.
Question 1 (10 points): Using the multimeter explain how you would measure the voltage drop on
R1? Did you have to remove any component to make the measurement?
Question 2 (10 points): Using the multimeter explain how you would measure the resistance of R1?
Did you have to remove any component to make the measurement?
Question 3 (10 points): Using the multimeter explain how you would measure the current going
through R2? Did you have to remove any component to make the measurement?
Question 4 (10 points): Using the multimeter explain how you would measure the total current of
the circuit? Did you have to remove any component to make the measurement?
Question 5 (10 points): Name two common mistake made by the student when using a breadboard

PART IV - ANALYSIS AND INTERPRETATION OF EPIDEMIOLOGIC RESULTS

The following food exposure information was collected through the cohort study. On January 19, the information was tabulated by epidemiologists from the Argentine MOH. (Table 2)

Table 2. Foods eaten by ill and well bus drivers at the home at the terminal bus stop, January 3-7, 1998. (N=21)

*Matambre is a traditional meat roll in Argentina.

**Mate is green tea.

Question 12: Calculate the appropriate measures of association for these exposures.

Question 13: Interpret the results. What further data analysis/information might help?

2016 2017

Sales $75,000 $90,000 Cost of Goods Sold 45,000 54,000 Gross Profit $30,000 $36,000 Operating Expense 15,000 15,000 Net Income $15,000 $21,000 Compute the corrected net income for 2016 and 2017 assuming that the inventory as of the end of 2016 was mistakenly understated by $7,000.

2016    2017

Corrected net income ______ _______

Depreciation Methods

Gruman Company purchased a machine for $198,000 on January 2, 2016. It made the following estimates:

In 2016, Gruman uses the machine for 1,700 hours and produces 45,000 units. In 2017, Gruman uses the machine for 1,200 hours and produces 32,000 units. If required, round your final answers to the nearest dollar.

If Gruman used a service life of 8 years or 15,000 hours and a residual value of $9,000 , what would be the effect on the following under the straight-line, sum-of-the-years'-digits, and double-declining-balance depreciation methods?

Depreciation expense

Straight-line method

2016 $

2017 $

Sum-of-the-years'-digits method

2016 $

2017 $

Double-declining-balance method

2016 $

2017 $

Book value Straight-line method

2016 $

2017 $

Sum-of-the-years'-digits method

2016 $

2017 $

Double-declining-balance method

2016 $

2017 $

Introduction:

One of the advantages of using Loops is to reduce the amount of programming effort especially when repeating the code is required. To demonstrate this advantages, the code below shows the PasswordGeneration class. The purpose of this program is to generate an ad hoc 12 letters long password upon a selection of a character from a string that contains a pool of letters.

Now upon implementing Loops strategy, the number of lines of the previous program will be reduced significantly. Version 2 of the above code can be written after adding more functionality to it is shown below. The new code has extra flexibility added to it by given the user to specify the size of the password required.

Task:

You are required to modify the second version of the program to satisfy the following conditions:

1. Create a second string that contains your full id and full name.
2. The program should select from both the original string and the string created that contains your id and name generated in 1 above.
3. Size of the password should not exceed 18 letters long
4. The program should allow the user to specify the number of passwords to be generated
5. The program should allow the user to run the program as many times as he/she require by prompting the user need to generate a number of passwords again.

PS: Below is a sample output of the program

Notes :

1. Lab is worth 5% of total mark
2. Submission of the lab is no later than Thursday 31^st October 2020 @ 18:00
3. No submission allowed after the deadline
4. Any submission via email or after deadline will not be accepted
5. This lab is individual work
6. You are required to submit your soft copy of your java code file via Blackboard
7. You are required to submit a document showing screenshots of the output
8. Failing to submit any of the above will cause reduction of 50% of the mark

Quiz 2

Hippocrates

Thomas Sydenham

James Lind

Benjamin Jesty

Edward Jenner

Ignaz Semmelweis

John Snow

Louis Pasteur

Robert Koch

John Graunt

William Farr

Bernardino Ramazzini

Edgar Sydenstricker

Doll and Hill

Florence Nightingale

Janet Lane-Claypon

Alice Hamilton

Wade Hampton Frost

Identified various modes of transmission and incubation times for cholera

B. Provided classifications of morbidity statistics to improve the value of morbidity information

C. Observed in the 17th century that certain jobs carried a high risk for disease

D. Introduced the words "epidemic" and "endemic"

E. Advanced useful treatments and remedies including exercise, fresh air, and a healthy diet, which other physicians rejected at the time

F. Through an experimental study, showed that lemons and oranges were protective against scurvy

G. Invented a vaccination for smallpox

H. The father of modern epidemiology

I. Used data as a tool for improving city and military hospitals

J. Conducted the first cohort study investigating the association between smoking and lung cancer

K. Promoted the idea that some diseases, especially chronic diseases, can have a multifactorial etiology

L. Observed that milkmaids did not get smallpox, but did get cowpox

M. Developed a vaccine for anthrax

N. Pioneered the use of cohort and case-control studies to identify risk factors for breast cancer

0. A pioneer in the field of toxicology

P. Credited for producing the first life table

Q. Used photography to take the first pictures of microbes in order to show the world that microorganisms in fact existed and that they caused many diseases

R. A statistician who was a pioneer in developing the theory of epidemiologic study design and causal inference

S. Discovered that the incidence of puerperal fever could be drastically cut by the use of hand washing standards in obstetrical clinics

2. List some of the contributions of the microscope to epidemiology.

3. What two individuals contributed to the birth of vital statistics?

What type of epidemiologic study was used by James Lind?

5. What types of epidemiologic studies were used by Doll and Hill?

As the COVID-19 epidemic rages in Ghana, many are seeking answers to the following questions: 1. What are the risk factors for getting infected with COVID-19? 2. What are the risk factors for having symptomatic infection i.e. feeling unwell? 3. What are the risk factors for severe disease (needing hospitalization) and death once a person is infected with COVID-19? Out of the under listed, choose a study design to answer any ONE of the three research questions above: 1. Case-based (prevalent cases) 2. Case-based (incident cases) 3. Case-Cohort (incident cases) 4. Density/Nested (incident cases) 5. Case-Crossover (incident cases) 6. Retrospective cohort 7. Community trial 8. Randomized controlled trial Question 1 Describe the design you select for carrying out the study to answer the research question you selected. In your description, be sure to capture as many elements as possible which highlight the design. E.g. if the simple case-control design was one of the options and you had selected it (note it is not one of the options), you would have to clearly define who your cases would be and who your controls would be, as well as when and how you would identify them etc. Type your response here. Word limit: min 600, max 1,000 Question 2 Provide three specific and practical reasons for your choice of study design for the research question you selected as opposed to any other of the designs. Do not simply state the generic strengths or advantages of your chosen study design, but make them specific to the research question. Type your response here. Word limit: min 200, max 500 Question 3 For each study design you have described to address the research questions, provide three possible research biases and how you would solve them. Do not simply state generic biases and how they are addressed, but be practical about it and how it relates specifically to the research question.

QUESTION 33

1.              In order to BEST test a causal hypothesis about an exposure and outcome, the researcher should                                           incorporate which of the following elements into their study?

2 points   

QUESTION 34

1.             Sustainable development considers the following main factors when addressing a global health issue:

2 points   

QUESTION 35

1.             Rising temperature impacts vector-borne disease transmission through:

2 points   

QUESTION 36

1.    Industrialization has contribute to the spread of emerging communicable diseases.

True

False

2 points   

QUESTION 37

1.               Compared to other study designs, studies that use the _________ design yield results that are the most                                   difficult to interpret.

2 points   

QUESTION 38

1.             According to the WHO, approximately 1.2 billion worldwide live in poverty.

True

False

2 points   

QUESTION 39

1.              The most effective intervention to decrease WASH-related disease transmission is:

2 points   

QUESTION 40

1.      Which of the following is a strength of using a cohort study design?

2 points   

QUESTION 41

1.             When examining the global HIV data between 2000 and 2015, the number of people living with HIV _______ and the number of people who received HIV treatment _________.