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The first two terms of a sequence are a 9 and a 3 Let a be the third term when the sequence is arithmetic and let b be the third term when the sequence is geometric Find az bz az b 3
Algebra
Sequences & Series
The first two terms of a sequence are a 9 and a 3 Let a be the third term when the sequence is arithmetic and let b be the third term when the sequence is geometric Find az bz az b 3
For triangle DEF given sides d 38 e 42 and f 47 find the measure of angle F Your answer will be numerical only and round to the nearest tenth
Geometry
Area
For triangle DEF given sides d 38 e 42 and f 47 find the measure of angle F Your answer will be numerical only and round to the nearest tenth
What is the equation of the line in point slope form given a slope of 23 and the point 4 7 y 7 2 3 x 4 y 7 2 x 4 y 4 x 7 y 7 2 x 4
Algebra
Quadratic equations
What is the equation of the line in point slope form given a slope of 23 and the point 4 7 y 7 2 3 x 4 y 7 2 x 4 y 4 x 7 y 7 2 x 4
Anabaena Amoeba Paramecium Euglena Carrot Onion and Potato Cell structures Amyloplast Chromoplast Nucleus Cell Wall Reagents and Stains Methylene blue Lugol s reagent llulose ert glad hot Har
Biology
Cell: The Unit of Life
Anabaena Amoeba Paramecium Euglena Carrot Onion and Potato Cell structures Amyloplast Chromoplast Nucleus Cell Wall Reagents and Stains Methylene blue Lugol s reagent llulose ert glad hot Har
POND WATER IF AVAILABLE TOIT Jugos Table 1 Pond Water Diversity Results attach an additional sheet if necessary Total Number Observed 1 2 3 4 5 6 7 8 9 Species Observed Brief description or name if known 20 ABAI 009 1018 Other comments MOIT
Biology
The Living World
POND WATER IF AVAILABLE TOIT Jugos Table 1 Pond Water Diversity Results attach an additional sheet if necessary Total Number Observed 1 2 3 4 5 6 7 8 9 Species Observed Brief description or name if known 20 ABAI 009 1018 Other comments MOIT
2 Ms Lioktsis has opened up multiple bags of M M chocolates and counted how many chocolates are in each The amounts are shown in the box below 7 marks 58 58 52 54 55 49 34 34 34 35 42 41 35 39 39 37 42 42 43 43 44 45 45 45 46 58 a Organize the data into the frequency table Be sure to show all your work Interval 30 34 35 39 40 44 45 49 50 54 55 59 Total Interval Frequency Sum Midpoint Cumulative Freq Frequency x mean
Statistics
Statistics
2 Ms Lioktsis has opened up multiple bags of M M chocolates and counted how many chocolates are in each The amounts are shown in the box below 7 marks 58 58 52 54 55 49 34 34 34 35 42 41 35 39 39 37 42 42 43 43 44 45 45 45 46 58 a Organize the data into the frequency table Be sure to show all your work Interval 30 34 35 39 40 44 45 49 50 54 55 59 Total Interval Frequency Sum Midpoint Cumulative Freq Frequency x mean
1 PREPARATION OF A WET MOUNT Sketch cells below a Estimation of the size of an individual onion cell PART Length mm Width b Estimation of the size of an individual carrot cell Length mm Width C Estimation of the size of an individual potato cell Length mm Width d Estimation of the size of an individual Elodea cell Length mm Width mm mm mm mm
Biology
The Living World
1 PREPARATION OF A WET MOUNT Sketch cells below a Estimation of the size of an individual onion cell PART Length mm Width b Estimation of the size of an individual carrot cell Length mm Width C Estimation of the size of an individual potato cell Length mm Width d Estimation of the size of an individual Elodea cell Length mm Width mm mm mm mm
1
Anatomy and Physiology
General Anatomy
1
S Name the x coordinate of one solution to the system of equations 2
Statistics
Statistics
S Name the x coordinate of one solution to the system of equations 2
Erik Erikson s Theory of Psychosocial Development O Connects earlier and late life development Starts at the very beginning of life O Builds upon development that occurs after traditional adulthood O None of the statements are correct All first three statement are correct
Anatomy and Physiology
Endocrinology
Erik Erikson s Theory of Psychosocial Development O Connects earlier and late life development Starts at the very beginning of life O Builds upon development that occurs after traditional adulthood O None of the statements are correct All first three statement are correct
From the life course perspective which research method design is most appropriate for investigating the changes individuals experience as they age O Longitudinal design O Quasi experimental environmental controlled design O Generalized experimental laboratory controlled design O Cross section design System review shifts design Life sustainability cohort
Anatomy and Physiology
Brain
From the life course perspective which research method design is most appropriate for investigating the changes individuals experience as they age O Longitudinal design O Quasi experimental environmental controlled design O Generalized experimental laboratory controlled design O Cross section design System review shifts design Life sustainability cohort
Match the following research methods Quantitative Qualitative Ethnography Biomarkers Choose Choose Words Symptoms Observations Numbers Saliva and Blood Choose Choose
Anatomy and Physiology
Introduction to Physiology
Match the following research methods Quantitative Qualitative Ethnography Biomarkers Choose Choose Words Symptoms Observations Numbers Saliva and Blood Choose Choose
What is an example of Productive Aging O Kyle is retired but a month later gets a job at Walmart Darlin is retired and volunteers most of her time to the local youth center Sniff is 76 years old and is running for local assembly government position All are correct
Anatomy and Physiology
Brain
What is an example of Productive Aging O Kyle is retired but a month later gets a job at Walmart Darlin is retired and volunteers most of her time to the local youth center Sniff is 76 years old and is running for local assembly government position All are correct
A firework is shot straight up into the air with an initial velocity of 500 feet per second from 5 feet off the ground The function modeling the path of the firework is h t 16t 500 5 A At what time will the firework hit the ground numerical answer only round to the nearest tenth 31 3 B Write the inequality that represents when the firework is below 2500 feet Enter your answer here 16 500 5 2500 C Solve the inequality you wrote in B and enter your answer here round to the nearest tenth 6 2 t 31 3
Statistics
Statistics
A firework is shot straight up into the air with an initial velocity of 500 feet per second from 5 feet off the ground The function modeling the path of the firework is h t 16t 500 5 A At what time will the firework hit the ground numerical answer only round to the nearest tenth 31 3 B Write the inequality that represents when the firework is below 2500 feet Enter your answer here 16 500 5 2500 C Solve the inequality you wrote in B and enter your answer here round to the nearest tenth 6 2 t 31 3
Determine the number of solutions for each of the graphs DRAG DROP THE ANSWER One Solution Two Solutions No Solution
Statistics
Statistics
Determine the number of solutions for each of the graphs DRAG DROP THE ANSWER One Solution Two Solutions No Solution
Use the definition of an exponent to write the given product in exponential form Answer 3 5 5 5 5 5 7 7 Enter one base and one exponent in each box going from left to right All of the boxes may not be used 3 5 5 5 5 5 7 7
Math - Others
Basic Math
Use the definition of an exponent to write the given product in exponential form Answer 3 5 5 5 5 5 7 7 Enter one base and one exponent in each box going from left to right All of the boxes may not be used 3 5 5 5 5 5 7 7
What are the solution s to the system of equations Select all that apply 2 5 25 D 1 0 10 3 75 325
Statistics
Statistics
What are the solution s to the system of equations Select all that apply 2 5 25 D 1 0 10 3 75 325
Solve the inequality algebraically Report the solution in interval notation 2 7 12 2003 4
Statistics
Statistics
Solve the inequality algebraically Report the solution in interval notation 2 7 12 2003 4
The height in feet of a football that is kicked can be modeled by the function 16a 64a where is the time in seconds after it is kicked for what time is the ball at or above a height of 48 feet above the ground
Statistics
Probability
The height in feet of a football that is kicked can be modeled by the function 16a 64a where is the time in seconds after it is kicked for what time is the ball at or above a height of 48 feet above the ground
7 The height in feet of a football that is kicked can be modeled by the function f a 16z 6z where is the time in seconds after it is kicked For what time s is the ball at or above a height of 48 feet above the ground
Statistics
Probability
7 The height in feet of a football that is kicked can be modeled by the function f a 16z 6z where is the time in seconds after it is kicked For what time s is the ball at or above a height of 48 feet above the ground
1 If v w 4 I and v w 1 5 compute and draw v and w
Algebra
Matrices & Determinants
1 If v w 4 I and v w 1 5 compute and draw v and w
7 3n 2n A C 9 29n 52n 32 8n 7 A 4 1 5 B 7 D B D 4 3 with wif 3 7 8 10 8 9x 45x28 2x B A 6 6 D 10 a 7a 25 5 3a 1 A B D 5 2
Algebra
Quadratic equations
7 3n 2n A C 9 29n 52n 32 8n 7 A 4 1 5 B 7 D B D 4 3 with wif 3 7 8 10 8 9x 45x28 2x B A 6 6 D 10 a 7a 25 5 3a 1 A B D 5 2
The calculated X value way of freedom chart as seen on the right Unless in otherwise compare your value to the p 0 05 row 1 A science teacher is bothered because of all the noise outside of his classroom each day He decides to see where th noise is coming from and finds that several groups of freshman students use the water fountain located by the door to his classroom There are three other water stations on campus and after studying the frequency at which students visi each water fountain he becomes convinced that students prefer the water fountain by his room rather than the other three fountains The teacher assigns a student to be at each water fountain and count the total number of students getting water from each one The data is as follows water fountain 1 by the teachers door 45 students water fountain 2 36 students water fountain 3 25 students and water fountain 4 30 students Is the teacher correct the students prefer to use the water fountain by his door Toumain 1 45 fountain 2 36 fountain 15 25 fountain 14 30 Step 1 state the null hypothesis Step 2 determine your expected values Step 3 complete the Chi square chart 113 Observed 05 Expected E TEL O E O E O E E Step 4 calculate your degrees of freedom 366 W20 30live 30 T
Biology
Molecular Basis of Inheritance
The calculated X value way of freedom chart as seen on the right Unless in otherwise compare your value to the p 0 05 row 1 A science teacher is bothered because of all the noise outside of his classroom each day He decides to see where th noise is coming from and finds that several groups of freshman students use the water fountain located by the door to his classroom There are three other water stations on campus and after studying the frequency at which students visi each water fountain he becomes convinced that students prefer the water fountain by his room rather than the other three fountains The teacher assigns a student to be at each water fountain and count the total number of students getting water from each one The data is as follows water fountain 1 by the teachers door 45 students water fountain 2 36 students water fountain 3 25 students and water fountain 4 30 students Is the teacher correct the students prefer to use the water fountain by his door Toumain 1 45 fountain 2 36 fountain 15 25 fountain 14 30 Step 1 state the null hypothesis Step 2 determine your expected values Step 3 complete the Chi square chart 113 Observed 05 Expected E TEL O E O E O E E Step 4 calculate your degrees of freedom 366 W20 30live 30 T
PopQuiz 6 Prof Rudy Meangru Find the first derivative and do not simplify the Algebra y 1 e 1 e x
Calculus
Differentiation
PopQuiz 6 Prof Rudy Meangru Find the first derivative and do not simplify the Algebra y 1 e 1 e x
Identify Types Of Slope Worksheet 4 What type of slope does the line on the graph below have K E EL14 14 13 T TE 30 13 14 O Positive slope O Zero Slope O Negative slope
Algebra
Permutations and Combinations
Identify Types Of Slope Worksheet 4 What type of slope does the line on the graph below have K E EL14 14 13 T TE 30 13 14 O Positive slope O Zero Slope O Negative slope
5 Radical Solve each equation Remember to check for extraneous solutions 1 x 6 x 2 2 x x A 4 3 A 1 2 C 5 2 C 1 3 3 3n n A 0 3 C 1 0 equations quadratics 5 a 12 a A 3 4 C 4 4 7 V 2r 3 r 2 A 1 C 1 1 9 9 2b b A 0 4 C 0 2 B 5 3 D 2 B 0 D 5 0 B 3 D 4 B 5 1 D 4 1 B 2 0 D 0 2 4 6 8 10 4 k 4 11 A 5 C 1 3 A 3 C 3 B 1 D 1 2 2k 6 m 3 2m 6 8 20 a a A 4 C 1 5 B 1 D 1 1 B 3 5 D 3 3 B 1 5 D 1 4 10 a 4 6 a A 2 1 C 5 B 2 D No solution
Algebra
Quadratic equations
5 Radical Solve each equation Remember to check for extraneous solutions 1 x 6 x 2 2 x x A 4 3 A 1 2 C 5 2 C 1 3 3 3n n A 0 3 C 1 0 equations quadratics 5 a 12 a A 3 4 C 4 4 7 V 2r 3 r 2 A 1 C 1 1 9 9 2b b A 0 4 C 0 2 B 5 3 D 2 B 0 D 5 0 B 3 D 4 B 5 1 D 4 1 B 2 0 D 0 2 4 6 8 10 4 k 4 11 A 5 C 1 3 A 3 C 3 B 1 D 1 2 2k 6 m 3 2m 6 8 20 a a A 4 C 1 5 B 1 D 1 1 B 3 5 D 3 3 B 1 5 D 1 4 10 a 4 6 a A 2 1 C 5 B 2 D No solution
Which mechanisms of biogeography explains the distribution in the figure Plethodon amplus Plethodon cheooh Plethodon jordanl Plethodon meridianus Plethodon metcalf Plethodon montanus Plethodon shermani Georgia Tennessee Continental Drift Vicariance Disjunct Dispersal Climatic Cycles Temporary Land Bridges Virginia North Carolina South Carolina
Biology
Ecology - Ecosystems
Which mechanisms of biogeography explains the distribution in the figure Plethodon amplus Plethodon cheooh Plethodon jordanl Plethodon meridianus Plethodon metcalf Plethodon montanus Plethodon shermani Georgia Tennessee Continental Drift Vicariance Disjunct Dispersal Climatic Cycles Temporary Land Bridges Virginia North Carolina South Carolina
If A is 4x4 matrix the dat A det A Select one True False
Algebra
Matrices & Determinants
If A is 4x4 matrix the dat A det A Select one True False
30 1 2t 4 31 3 4 x 20 32 51 2x 40
Algebra
Quadratic equations
30 1 2t 4 31 3 4 x 20 32 51 2x 40
1 AOTD What is the primary purpose of the horned lizards shooting blood from their eyes OC To scare or blind predators To feed baby lizards to reduce intra ocular blood pressure To camouflage the lizard
Biology
Ecology - Biodiversity & Conservation
1 AOTD What is the primary purpose of the horned lizards shooting blood from their eyes OC To scare or blind predators To feed baby lizards to reduce intra ocular blood pressure To camouflage the lizard
Adjacent water molecules interact through the sharing of electrons between the hydrogen of one water molecule and the oxygen of another water molecule electrical attraction between the hydrogen of one water molecule and the oxygen of another water molecule sharing of electrons between adjacent oxygen molecules trical attraction between the hydrogen atoms of adjacent water molecules
Biology
Human Physiology - Breathing & Exchange of Gases
Adjacent water molecules interact through the sharing of electrons between the hydrogen of one water molecule and the oxygen of another water molecule electrical attraction between the hydrogen of one water molecule and the oxygen of another water molecule sharing of electrons between adjacent oxygen molecules trical attraction between the hydrogen atoms of adjacent water molecules
Based on your reading about the patterns of survivorship which of following curves indicate relatively constant survivorship over all ages Percentage of Individuals Surviving Listen 100 0 1 Curve III Curve I Curve II 11 Time
Biology
The Living World
Based on your reading about the patterns of survivorship which of following curves indicate relatively constant survivorship over all ages Percentage of Individuals Surviving Listen 100 0 1 Curve III Curve I Curve II 11 Time
Find the values of a and b that make the function f x continuous everywhere 2x a x 3 f x ax 2b b 5x 3 x 3 x 3
Calculus
Differentiation
Find the values of a and b that make the function f x continuous everywhere 2x a x 3 f x ax 2b b 5x 3 x 3 x 3
1 2023 Kuta Software LLC All rights reserved Solving Quadratics a 1 Solve each equation by factoring 1 7x 3x 0 A 4 27 8 7 C 1 55 7n 52n 21 9 3 3 3p 14p 27 3 A 2 7 6 B A 7 9 12 8 C 7 3n 2n A B C D 4 D B D B D 9 29n 52n 32 8n A B 131 D 37 43 3 48 2 4 6 8 10 2 3b 206 32 0 A C 4 5x 27x 31 3 A B 6 2p 15p 18 A 1 1 C D 5 B D B 7 1 3 8 8 9x 45x28 2x A D 3 5 B B D D 225 6 3 7 25 10 a 7a 25 5 3a A 4 4 6 5 6
Algebra
Permutations and Combinations
1 2023 Kuta Software LLC All rights reserved Solving Quadratics a 1 Solve each equation by factoring 1 7x 3x 0 A 4 27 8 7 C 1 55 7n 52n 21 9 3 3 3p 14p 27 3 A 2 7 6 B A 7 9 12 8 C 7 3n 2n A B C D 4 D B D B D 9 29n 52n 32 8n A B 131 D 37 43 3 48 2 4 6 8 10 2 3b 206 32 0 A C 4 5x 27x 31 3 A B 6 2p 15p 18 A 1 1 C D 5 B D B 7 1 3 8 8 9x 45x28 2x A D 3 5 B B D D 225 6 3 7 25 10 a 7a 25 5 3a A 4 4 6 5 6
If A is a 3 x 3 matrix such that det A 3 then det A2 6 Select one O True O False
Algebra
Matrices & Determinants
If A is a 3 x 3 matrix such that det A 3 then det A2 6 Select one O True O False
If A is a 4x4 matrix A such that det A 2 then det 2A 1 Select one True False
Algebra
Quadratic equations
If A is a 4x4 matrix A such that det A 2 then det 2A 1 Select one True False
15 2x 124 X 16 x 1 6 4x 17 2x x 1
Algebra
Quadratic equations
15 2x 124 X 16 x 1 6 4x 17 2x x 1
22 min a b c 4a 5b 7b 4p 23 6x 5y 5z 2y TE Yan t The Answer is 41 Yan t The Answer is 57
Algebra
Quadratic equations
22 min a b c 4a 5b 7b 4p 23 6x 5y 5z 2y TE Yan t The Answer is 41 Yan t The Answer is 57
Let v 1 3 0 6 2 Then there exists a vector w such that w 1 and v 1 v w and there exists a vector u such that u 1 1 and v v u Then w 5 and u 4 The number of different w that do the above trick is Note If the number is infinite write X in the space and the number of different u that do the trick is
Algebra
Permutations and Combinations
Let v 1 3 0 6 2 Then there exists a vector w such that w 1 and v 1 v w and there exists a vector u such that u 1 1 and v v u Then w 5 and u 4 The number of different w that do the above trick is Note If the number is infinite write X in the space and the number of different u that do the trick is
1 Calculate the volume of vector and PCR product that you need for each of the reactions 2 Setup a reaction mixture of 20 L to perform the four ligation reactions Tube 1 Digested pUC19 or digested pBR322 without insert Tube 2 Digested pUC19 or digested pBR322 with insert Tube 1 I Reagents Digested pUC19 or digested pBR322 10X ligase buffer Digested GFP PCR amplicon insert Sterile water Ligase Tube 2 1 L 1 L Final Volume 20 L 20 L Note the values of the table will be calculated in class Question What role does each of the ligation reactions play ex control what type to control what sample 3 3 Transformation of competent E coli
Biology
The Living World
1 Calculate the volume of vector and PCR product that you need for each of the reactions 2 Setup a reaction mixture of 20 L to perform the four ligation reactions Tube 1 Digested pUC19 or digested pBR322 without insert Tube 2 Digested pUC19 or digested pBR322 with insert Tube 1 I Reagents Digested pUC19 or digested pBR322 10X ligase buffer Digested GFP PCR amplicon insert Sterile water Ligase Tube 2 1 L 1 L Final Volume 20 L 20 L Note the values of the table will be calculated in class Question What role does each of the ligation reactions play ex control what type to control what sample 3 3 Transformation of competent E coli
1 2 3 Directions Complete the table below by listing the attributes of each shape Write zero 0 or N A if the attribute does not apply For columns B D and E write the names using words not symbols A Shape O B Name of Shape SPhere 1 cone C Number of Face s include bases in this number Cylinder Pyramia 2 Triangle E Pyram 3 5 Rectangle Prime 6 3 D Shape of Face s circular curved No circular Triangle E Rectangular Face F Shape of Base s curved curved Lateral square Square Triangular Triangle F Number of Straight Edges 4 2 8 12 9 G Apex O O 5 8
Geometry
2D Geometry
1 2 3 Directions Complete the table below by listing the attributes of each shape Write zero 0 or N A if the attribute does not apply For columns B D and E write the names using words not symbols A Shape O B Name of Shape SPhere 1 cone C Number of Face s include bases in this number Cylinder Pyramia 2 Triangle E Pyram 3 5 Rectangle Prime 6 3 D Shape of Face s circular curved No circular Triangle E Rectangular Face F Shape of Base s curved curved Lateral square Square Triangular Triangle F Number of Straight Edges 4 2 8 12 9 G Apex O O 5 8
4 4 0 4 y 0x00 X
Math - Others
Basic Math
4 4 0 4 y 0x00 X
Proceeds from Notes Payable On January 26 Bella Co borrowed cash from Conrad Bank by issuing a 120 day note with a face amount of 72 000 Assume a 360 day year a Determine the proceeds of the note assuming the note carries an interest rate of 8 b Determine the proceeds of the note assuming the note is discounted at 8 A
Calculus
Definite Integrals
Proceeds from Notes Payable On January 26 Bella Co borrowed cash from Conrad Bank by issuing a 120 day note with a face amount of 72 000 Assume a 360 day year a Determine the proceeds of the note assuming the note carries an interest rate of 8 b Determine the proceeds of the note assuming the note is discounted at 8 A
4 4 0 4 y X 0
Math - Others
Binomial theorem
4 4 0 4 y X 0
4 0 0004 OC
Math - Others
Basic Math
4 0 0004 OC
4 t 0 4 y X 00
Math - Others
Basic Math
4 t 0 4 y X 00
2010 bunt banway SUDIONS upium sit still wolf a ubwop Coo cipium 5 1 Sty wolf 36 it D x2 x J 1 XJ
Calculus
Application of derivatives
2010 bunt banway SUDIONS upium sit still wolf a ubwop Coo cipium 5 1 Sty wolf 36 it D x2 x J 1 XJ
Use the washer method to find the vo Question Find the volume of a solid of revolution formed by rotating the region bounded above by the graph of f x x 4am below by the graph of g over the interval 2 8 about the x axis Enter an exact value in terms of Provide your answer below
Calculus
Definite Integrals
Use the washer method to find the vo Question Find the volume of a solid of revolution formed by rotating the region bounded above by the graph of f x x 4am below by the graph of g over the interval 2 8 about the x axis Enter an exact value in terms of Provide your answer below
For example all breeds of domestic dogs belong to one species Dogs belong to a different species than coyotes but these two species are similar enough to be included in the same genus Wolves dogs and coyotes share enough characteristics to be included in one family Traditionally two organisms were considered to belong to the same species if members of the opposite could mate and produce viable fertile offspring The classification of bacteria is not straightforward because 1 bacteria do not reproduce sexually so they do not mate 2 bacteria may look very much alike when viewed through the microscope but may not be related closely and 3 bacteria can acquire DNA horizontally through conjugation for example from various microbes Phenotypic bacterial classification schemes utilize the Gram stain bacterial morphology staining properties growth requirements and biochemical tests The environmental reservoir of the organism vectors and means of transmission of the pathogen are of importance to clinicians The ability of bacteria to grow in the absence or presence of oxygen is an important characteristic in classifying bacteria for example Bacteroides found in the large intestine are strict anaerobes The types of biochemical reactions each organism can perform serve as a thumbprint for identification For example the catalase test identifies microbes that produce the enzyme catalase such as Streptococcus species Data Wor FGK Figure Catalase G C moles 43 Gelatin hydrolyzed Gram stain A H S produced Indole produced Lactose fermented Metabolism Methyl red Sterols required Voges Proskauer Glucose fermented Acid gas Methyl red Sterols required Voges Proskauer G 53 Figure Catalase G C moles Gelatin hydrolyzed Gram stain H S produced Indole produced Lactose fermented Metabolism 50 Glucose fermented Acid gas H FEH C Acid Acid only only 2 8 1EFE 45 58 Anaerobe Acrobe Anaerobe Facultative Facultative Facultative anaerobe anaerobe anaerobe I 60 Q D Acid only 40 Acid only Facultative anacrobe Acrobe Acrobe Acrobe J 1111 B 66 E 30 Acid only K S JE Facultative anaerobe Acid gas H F 53 ODJ Acid gas OE I
Biology
The Living World
For example all breeds of domestic dogs belong to one species Dogs belong to a different species than coyotes but these two species are similar enough to be included in the same genus Wolves dogs and coyotes share enough characteristics to be included in one family Traditionally two organisms were considered to belong to the same species if members of the opposite could mate and produce viable fertile offspring The classification of bacteria is not straightforward because 1 bacteria do not reproduce sexually so they do not mate 2 bacteria may look very much alike when viewed through the microscope but may not be related closely and 3 bacteria can acquire DNA horizontally through conjugation for example from various microbes Phenotypic bacterial classification schemes utilize the Gram stain bacterial morphology staining properties growth requirements and biochemical tests The environmental reservoir of the organism vectors and means of transmission of the pathogen are of importance to clinicians The ability of bacteria to grow in the absence or presence of oxygen is an important characteristic in classifying bacteria for example Bacteroides found in the large intestine are strict anaerobes The types of biochemical reactions each organism can perform serve as a thumbprint for identification For example the catalase test identifies microbes that produce the enzyme catalase such as Streptococcus species Data Wor FGK Figure Catalase G C moles 43 Gelatin hydrolyzed Gram stain A H S produced Indole produced Lactose fermented Metabolism Methyl red Sterols required Voges Proskauer Glucose fermented Acid gas Methyl red Sterols required Voges Proskauer G 53 Figure Catalase G C moles Gelatin hydrolyzed Gram stain H S produced Indole produced Lactose fermented Metabolism 50 Glucose fermented Acid gas H FEH C Acid Acid only only 2 8 1EFE 45 58 Anaerobe Acrobe Anaerobe Facultative Facultative Facultative anaerobe anaerobe anaerobe I 60 Q D Acid only 40 Acid only Facultative anacrobe Acrobe Acrobe Acrobe J 1111 B 66 E 30 Acid only K S JE Facultative anaerobe Acid gas H F 53 ODJ Acid gas OE I