MATH HOMEWORK ASSIGNMENT 5b - answers
RATIOS AND PROPORTIONS continued
1. How much ethanol is present in 200 mL of a 25 % solution of ethanol?
25
X
100 200mL
X 50mL
2. A laboratory solution is made of water and ethylene glycol. How could one
prepare 150 m
1
Control by Heat and UV Lab Report
March 15, 2015
Microbiology 2310
abc127
2
Introduction
Heat treatment is one of the most reliable ways to control microbial growth
since it doesnt bring in toxic chemicals to materials and its relatively fast and
inexpe
MATH HOMEWORK ASSIGNMENT 7a - answers
DILUTIONS
1. Suppose you dilute 1 ounce of concentrated cool aid with 6 ounces of water.
a. Express this dilution using the word "in".
1 ounce in 7 ounces
b. Express this dilution using the word "to".
1 ounce to 6 oun
MATH HOMEWORK ASSIGNMENT 1
SCIENTIFIC NOTATION
1. Give the whole number or fraction that corresponds to these exponential
expressions.
a. 2 3 _
b. 31 _
c. 3 2 _
d. 3 3 _
e. 10 6 _
f. 10 7 _
g. Explain how to solve 1d using your calculator.
h. Explain how
MATH HOMEWORK ASSIGNMENT 8 - answers
REVIEW
1. Solve for ? by cross multiplying and dividing. Show your work.
0.35 mg 300 mg
2L
?
300 mg 2L
?
0.35 mg
? 1714.3 L
2. In the following problems:
First state the unknown,
Second, set up the proportion equati
MATH HOMEWORK ASSIGNMENT 9a - answers
GRAPHING AND LINEAR EQUATIONS
1. For each graph, describe in words the relationship that is displayed.
1 a.
Subst rat e
Number of Cells
1 b.
Time
Time
a) substrate decreases over time
b) the number of cells increases
MATH HOMEWORK ASSIGNMENT 1 - answers
SCIENTIFIC NOTATION
1. Give the whole number or fraction that corresponds to these exponential
expressions.
a.
23
b.
8
3
d. 3 1 27 0.0370
31
e.
2
c. 3 19 0.111 .
10 6 1,000,000
3
f.
10 7 0.0000001
g. Explain how to s
MATH HOMEWORK ASSIGNMENT 1
SCIENTIFIC NOTATION
1. Give the whole number or fraction that corresponds to these exponential
expressions.
a. 2 3 _
b. 31 _
c. 3 2 _
d. 3 3 _
e. 10 6 _
f. 10 7 _
g. Explain how to solve 1d using your calculator.
h. Explain how
MATH HOMEWORK ASSIGNMENT 2b - answers
CALCULATING THE SIZE OF ORGANELLES
Magnified X 10,440
1. With your partners, measure the width of 3 mitochondria on this
photomicrograph. Measure them in both inches and mm.
0.5 to 1.5 cm or 0.25 to 0.75 inches
2. Cal
MATH HOMEWORK ASSIGNMENT 2 - answers
MEASUREMENTS AND MAGNIFICATIONS
1. Which is bigger?
a. An object that is 1 cm or an object that is 1 mm?
b. An object that is 25 nm or an object that is 25 m?
c. A volume that is 1 dL or a volume that is 1 mL?
d. A vol
MATH HOMEWORK ASSIGNMENT 6 - answers
CONCENTRATION EXPRESSIONS
1
1 a. 1 part per million (ppm) = 10 6 0.000001 0.0001 %
1
X
1 ppm 6 9 10 3 ppb
c.
10
10
3
X 10
10
X
10%
6 10 5 ppm
100 10
b.
X 10 5
0.0001
X
6 1ppm
100
10
4
6
10 10 1
X
10 2
0.0001%
d.
1m
MATH HOMEWORK ASSIGNMENT 7b - answers
DILUTIONS AND SOLUTION PREPARATION
1. Suppose you have 10 L of an expensive enzyme that has 100 Units/mL. You
are going to use the enzyme in an experiment that requires tubes with 0.01
Units/mL of enzyme and each tube
MATH HOMEWORK ASSIGNMENT 4 - answers
ALGEBRAIC EXPRESSIONS
1. Explain in words what the following relationships mean:
a. A B C D
The sum of A plus B is equal to the sum of C plus D.
b.
A C
B D
A divided by B is equal to C divided by D.
2. Insert numbers i
MATH HOMEWORK ASSIGNMENT 9b - answers
GRAPHING AND LINEAR EQUATIONS continued
1. Draw the line that has a Y intercept of -1mg, and a slope of 2.5mg/cm.
4.0
X
0 cm
1
2
4
Y
-1 mg
1.5
4
9
mg
3.0
2.0
1.0
cm
-1.0
Y
2 mg
X 1
cm
-2.0
-3.0
-4.0
-4.00 -3.00 -2.00
MATH HOMEWORK ASSIGNMENT 3 - answers
LOGS AND ANTILOGS
1. Give the common log of the following numbers.
a. 1.00
0
b. 100,000 c. 1,000,000,000
5
9
d. 0.01
-2
e. 0.1
-1
2. Answer this question without using a calculator; then check your answer with
a calcul
1
Microbiology 2310
February 1, 2015
Lab Report: Environmental Contaminants
Introduction
The purpose of this lab is to observe the different colonies of bacteria present
in fomites (objects or materials that are likely to carry infection) and contaminants
Media & Biochemical Tests Briefs
What follows is a brief overview of the media that will be used in the identification of unknown
organisms.
Bile Escluin
o Application: To determine if the organism can survive in bile, and can hydrolyze
(degrade) Esculin.
Lab Unit 11: Enteric Microorganisms
Procedure
Four organisms will be used during this lab:
o Escherichia coli
o Enterobacter aerogenes
o Klebsiella sp.
o Pseudomonas aeruginos
Students will work in groups of four. Each student in the group will be respons
Lab Unit 11: Enteric Microorganisms
Assignment
The intestinal tract is home to a wide array of bacteria, most of which are normal
residents. We refer to these organisms as the normal flora. Most of these organisms are
generally mild, but in the right circ
DISORDERS OF THE IMMUNE SYSTEM
Autoimmune Diseases
A.
Develop immunity to self-Ag. on host tissues autoantibodies, T lymphocytes
B.
Development autoimmunity destruction host tissues
C.
Immunological tolerance - ability to recognize self vs non-self.
D.
Du
Human Microbe Interactions
Microbiology Lab Notes 3
Topics
*
*
*
*
Symbiosis
Anatomical barriers as ecosystems
Normal flora
Pathogens and infectious diseases
*
*
*
A- Terms definition
B- Characteristics of an infectious disease
C- establishment of an infe
1
Lab Report 5: Unknown Organism
Microbiology 2300
April 5, 2015
Abc127
2
Introduction
A dichotomous key is used to identify organisms based on similar
characteristics (Dichotomous). The key consists of a list of general characteristics
that are compared