Questions

Round your answers to 3 decimal places a Find the expected value and standard deviation of your prospective winnings The expected value is h You play twice Find the mean of your total winnings the standard deviation is

Critical Thinking 1 Why do bile salts make an ideal ingredient in MAC agar to grow fecal coliforms over other bacteria

8 Which of the following is a misconception about MSA a It selects for salt tolerant bacterial growth b It selects for bacterial growth based on Gram property c It is a complex media d It will not support the growth of pathogens e Staphylococcus species grow well on it uz nodies as lotin

2 Occasionally MAC agar is prepared as a broth medium but such a format would not be useful for food safety or water quality testing Explain why

7 Choose the true statement s about Staphylococcus species select all that apply a They exist as normal human microbiota of the skin b They include pathogens c They are salt tolerant d They include opportunistic pathogens e They all ferment mannitol

A 40 year old man in the U S has a 0 24 risk of dying during the next year An insurance company charges 300 per year for a life insurance policy that pays a 100 000 death benefit What is the expected value for the person buying the insurance Round your answer to the nearest dollar Expected Value for the year

The following problem refers to right triangle ABC with C 90 Find all the missing parts Round your answers to one decimal place b 301 and B 29 3

Based on historical data an insurance company estimates that a particular customer has a 1 7 likelihood of having an accident in the next year with the average insurance payout being 1600 If the company charges this customer an annual premium of 80 what is the company s expected value of this insurance policy

2 Which batch or batches if any would you pass for use in the laboratory 3 The technician learned that one of the batches was prepared with a below normal amount of NaCl Which batch would that most likely be How do you know

batches MSA DETore a quality control QC analysis For QC analysis an MSA plate from each batch is inoculated with three different bacterial species Organisms A and B should both grow on MSA Organism C should not grow on MSA Organism A can also ferment mannitol but Organism B cannot As a positive control the same process side by side inoculation of Organisms A B and C is used to inoculate a nutrient agar NA plate As a negative control an uninoculated control is also included for each test run The data for several separate MSA batches are presented in the following tables QC Testing Batch 1 MSA Nutrient Agar QC Testing Batch 2 MSA Nutrient Agar QC Testing Batch 3 MSA Nutrient Agar Organism A Abundant Growth Yellow Halo Abundant Growth Organism A Abundant Growth Yellow Halo Abundant Growth Organism A Abundant Growth No Yellow Halo Abundant Growth Organism B Abundant Growth No Yellow Halo Abundant Growth Organism B Abundant Growth No Yellow Halo Abundant Growth Organism B No Growth Abundant Growth Organism C Abundant Growth No Yellow Halo Abundant Growth Organism C No Growth Abundant Growth Organism C No Growth Abundant Growth Uninoculated Plate No Growth No Growth Uninoculated Plate No Growth No Growth Based on the data provided answer the following questions 1 Applying what you have learned about MSA what criteria must be met for a batch to pass QC Uninoculated Plate Some Growth No Growth

2 Explain the Error When Irom found the difference 11 4 he got 15 What might Tom have done wrong

1 As a hobby you make pickles Your cousin comes over and you offer them a taste of your latest batch of locally famous never cooked refrigerator sweet and sour cucumber dills They turn down the offer and mention to you that the CDC Centers for Disease Control and Prevention just issued a warning that an outbreak of foodbome Campylobacter jejun infections associated with cucumbers has been tearing through the region for the last month The cases are all linked to cucumbers purchased at a local farmer s market the same market where you buy all your cucumbers Your cousin reminds you that the pickle batch you just completed was made using cucumbers that were harvested and sold during the time frame in which the infections occurred Are your pickles which soak in a pH 3 2 vinegar brine for at least a month safe to eat Explain your reasoning

Find dy dx by differentiating implicitly a b 4y 3x x x 4y 9 0 x 3y x 27 d 2y 5 x y 0 x 3x 1 15 0 27

Question 3 20 points Find the derivative of each of the given functions using the Derivative of a Power of a Function a y 2 3x b y x 1 3x 5 d y 1 5x D EY

2 15 points Find the derivative of each function by using a d 7 da y C V y V X 2x 3 du dr T 2x 1 2x 1 3x 2 U v dv da

RIGHT NOW ON YouTube Shorts Statue of Liberty Which of the following statements is FALSE The Statue of Liberty is located on federal property YOU COULD BE BEHIND THE SCENES WITH DUDEPERFECT Submit The guy who built the Eiffel Tower also designed the inside of the Statue of Liberty Testing as Angelina Payne Question 8 17 Right of 7 The Eiffel Tower was a gift to the Americans from the people of France Bartholdi got permission from both the French and the US to build the statue Statue of Liberty Tickets offline no internet Open

A circular mirror is surrounded by a square metal frame The radius of the mirror is 7x The side length of the metal frame is 21x What is the area of the metal frame The area of the frame is square units Type your answer in factored form Type an exact answer in terms of

Find the derivative of each function by using d u v da a F b dv dx Do not find the product before finding the derivative d v du da f x 3x 2 4 x 3 s 6t 1 3 4 y 6x 3x 5x y 2x 7 5 2 x

sqrt 1 3 x 2 2 1 6 x 2 2 135 49 At least one of the answers above is NOT correct Arc Length 3 6 1 Oda 3x 2 135 49 1 622 1 a Set up the integral to compute the arc length of the function f x on the interval 3 6 2 6x 2 incorrect incorrect

The graph of y f x is the solid black graph below Which function re graph 10 9 8 7 6 5 2 10 8 6 5 co 2 93 2 10 9 7 00 3 10 2 3 4 10 5 6 7 8 9 10

2 Different animals have different normal body temperatures For example chickens have a normal body temperature of 40 6 41 7 C 105 107 F How might different animal body temperatures affect their susceptibility to certain bacterial pathogens

Question 10 SATA partial credit 1 point Select all that apply Tendons are characterized as which of the following connective tissue types Answers A E FLAD QUESTION A cartilage B connective tissue proper C reticular connective tissue D dense regular connective tissue E elastic connective tissue

oblem 5 The number of years N r since two independently evolving languages split off from a common ancestral language is approximated by N r 5000 ln r where r is the proportion of words from the ancestral language that are common to both languages Find the following a Find and interpret the values of N 0 3 N 0 5 and N 1 b How many years have elapsed since the split if 70 of the words of the ancestral language are common to both languages today c Find the average rate of change of N r on the interval 0 2 0 25 and interpret its meaning d Sketch the graph of N r and use it to answer the following question if two languages split off from a common ancestral language about 1000 years approximate the proportion of the words that are common to both languages

A survey of 61 college students was taken to determine where they got the news about what s going on in the world Of those surveyed 25 got the news from news websites 29 from social media and 13 from both news websites and social media Construct a Venn diagram and determine the cardinality for each region Use the completed Venn Diagram to answer the following questions How many got the news from only news websites n News websites only How many got the news from only social media n Social media only How many got the news from news websites or social media n News websites or Social media How many did not get the news from either news websites or social media socia

Match the two columns regarding viruses Obligate intracellular parasites They have genetic information The genetic information is protected Limited genetic information Choose Choose They infect any type of host cell and cause disease They require the host s genome to replicate Phospholipid bilayer membrane embedded with capsids Protein capsid or a phospholipid layer embedded with viral glycoprote Viruses have DNA or RNA but never both They infect specific host cells and cause disease

2 The alkaline diet has gained in popularity to improve general wellness and even prevent the growth of harmful bacteria The premise of the diet is that certain foods raise your body s pH to an alkaline level basic level and that increase in pH is protective Apply what you learned in this lab to discuss if this is a legitimate claim or wishful thinking

5 7 8 7 6 5 7 6 5 4 3 2 1 0 U lection LO S 4 3 T 2 3 2 1 0 5 6 H N lahe below shows a S M 3 3 4 5 6 N M N 6 U preimage and its reflected image Write a sentence 6 B 8 1 5 8 E G 8 7 G 5 4 3 2 D 6 D F 61 0 4 2 E D 6 3 2 1 B 5 4 3 2 1 01 1 D E d 3 6 7 1 2 3 4 5 6 T

3 7 each reflection The first problem has been completed for you Each coordinate plane below shows a preimage and its reflected image Write a sentence to describe 2 R P 5 4 3 O Triangle PQR was reflected over the x axis to form triangle P Q R 6 5 4 3 2 1 0 1 2 61 N N W W X y 4 C M 6 5 4 K B L 6 5 4 3 2 1 0 6 5 2 3 2 1 2 1 0 2 3 4 6 B 1 2 K L 3 A 4 C 5 6 6 M

Identify C A B C F E

James finds an interesting fossil and wants to know how old it is He takes it to his cousin who works in laboratory and he determines that it is 350mya based on the ratio of Uranium atoms compared to Lead atoms in the sample What dating method is this an example of O Index Fossil O Corollary Rock Layers Relative Dating

3 Using binary search if looking for 23 in the following list what are the numbers that will be compared with 23 Mid index is the 3th element if there are 6 elements in the array 1 5 10 15 20 25 30 35 40 45 50 O 30 15 20 25 O 20 35 25 30 O25 10 15 20 20 25 30 30 20 25

Select True or False from each pull down menu depending on whether the corresponding statement is true or false 1 For each x term in the multiple regression equation the corresponding B is referred to as a partial regression coefficient 2 In a multiple regression problem the regression equation is 60 6 5 2x1 0 752 The estimated value for y when 1 3 and 2 4 is 48 3 In a multiple regression problem involving 24 observations and three independent variables the estimated regression equation is 72 3 2x1 1 5x2 x3 For this model SST 800 and SSE 245 The value of the Fstatistic for testing the significance of this model is 15 102 4 Multicollinearity is a situation in which two or more independent variables are highly correlated with each other

7 Which of the following cannot be derived from the following grammar S aASb bA A SAalb Select ALL that apply aaab abbbb aaaa

Find the equation of the tangent line to the function f x x x x 3 at the point where x 2 Select the correct answer below

What is the maximum number of comparisons needed to sort an array of 4 numbers which already has been sorted using the Insertion sort 6 00 O 16

Part A D E F Identify the structures within the circle labeled A G K H

Step No 1 Step No 2 Step No 4 Step No 5 Step No 6 Choose Choose The bacteriophage inserts its DNA using the sheath Binary fission also duplicates the viral DNA That is the animal cell The bacteriophage inserts its DNA using the capsid Viral DNA incorporates into the host s DNA That is the bacterial cell That is the protozoan cell Eventually two identical cells will synthesize bacteriophage particles Eventually two identical cells will synthesize the mutated DNA

1 6 Which one equals to P q V q b d O OpVq d b O

2 Oxygen is usually abundant in the lungs so why do some bacteria that cause lung infections eg Mycobacterium tuberculo the bacterium that causes tuberculosis evolve to be facultative anaerobes

Which of the following is not the language of R R 0 1 1 None of these answers 0000 000111

1 Thioglycollate medium is useful for characterizing the microorganioms present in blood cultures However interpreting blood cultures is challenging since normal microbiota normal floral from the skin at the venous bloed draw site can contaminate the samples For this reason blood is usually taken from each am and the growth from the blood draw of the right arm is compared to that of the sample from the left arm Imagine you obtain the following blood samplie data Growth Detected Sampled Site Right arm Yes Yes Growth Location in Thioglycollate Medium Abundant bacterial growth at the top of the tube and bacterial growth isolated Bacterial growth isolated at the bottom of the tube no other growth observed Answer the following based on the data a Would you conclude normal microbiota were detected Explain your reasoning b Would you conclude the patient has an anaerobic blood infection bacteremial Explain your reasoning

35 1 point A club consists of 5 girls Kirsten Sarah Suzie Monica and Katie and 3 boys Kevin Steve and Samuel Find P S name U Boy 2 3 5 8 3 4 3 8 0000

5 Old thioglycollate can give inaccurate data What could you expect if older thioglycollate medium was used Select all that apply a Fastidious bacteria would be unable to grow b Strict anaerobes may not be detected c Obligate aerobes would grow less than expected d Microaerophiles would grow less than expected e Aerotolerant anaerobes would be unable to grow

10 Which of the following can be derived from the following grammar S 0S110A A 1AS0 O 0010001 001111 00001 O1100 0011

Yes No Total Previous Do you own a smartphone Female 24 72 96 Male 27 81 108 Owning a smartphone and gender are independent True False Total 51 153 204

1 2 Which of the following are not the language of R R 01 1 Select ALL that apply 0111 01110111 0101 1111

vaccine development and other basic research studies Which of the following hosts will allow the replication of animal and human viruses Mark all that apply Hen s eggs HeLa cells Primary cell cultures E coli Cancerous cells

a Set up the integral to compute the arc length of the function f x Arc Length 120 b Find the value of the arc length da 2 6x on the interval 3 6

Which of the following is the correct regular expression for the language L L all binary words that ends in and begins with a O aUb a O a aUb a O a aUb U a a aUb U aUb a

a Set up the integral to compute the surface area of the solid formed by revolving y 2x 3 on the interval 0 3 about the x axis Surface Area 120 da b Compute the value of the surface area