Abstract: It is important to be able to identify pathogenic bacteria that may be causing harm. Tomato crops can be affected by several different pathogenic bacteria. By using Koch’s postulates, it was determined that Pseudomonas syringae was the bacteria causing rot. There are four criteria that must be met when using Koch’s postulates. They are that the organism must be fund in all infected, the organism must be isolated in pure culture then once reinnoculated in a healthy host, must cause the same symptoms and last, the organism must be reisolated in pure culture. All of Koch’s postulates were demonstrated with the tomato. Introduction: Koch’s postulates is important to determine various pathogens. There are 4 criteria must be met to determine a pathogen. 1) Presence of organism in all hosts, 2) isolation of pathogen in pure culture, 3) pathogenic when introduced into healthy host, 4) reisolated in pure culture. A tomato will be used to test Koch’s Postulates. The bacteria from a rotten tomato will be isolated and grown in pure culture. A healthy tomato will be reinocculated with the grown bacteria. The tomato that shows that same rot as the initial tomato will have the bacteria reisolated and grown under pure culture. If the bacterial colonies look the same, biochemical testing will be done to determine the species of bacteria. It is predicted that Pseudomonas syringae will be the pathogenic bacteria. Materials and Methods:

The bacteria from a rotten tomato was streaked on nutrient agar plate. The different colonies were then isolated and grown on nutrient agar slants. Slices of healthy tomato were inoculated using the grown bacteria (one type of bacteria per slice) and, there was a control which was not inoculated. The slices of tomatoes were allowed to incubate but, water was added to make sure the slices did not dry out. Once the same signs of rot were present on one of the inoculated tomatoes that was present on the original rotten tomato, the bacteria...

...Koch'sPostulates
Introduction
Koch created four guidelines to determine the causal agents of disease in humans, animals, and plants. Koch proved that a disease-causing agent could be transferred from one organism to another and create the same illness. Isolation of pure cultures and the introduction of the disease-causing agent to a healthy organism will transmit the disease and infect the inoculated organism. Koch's four guidelines by which...

...Shockley produced a conceptual design based on certain aspects that are considered to have an effect on the auditor’s capability to endure stress. It has been suggested that, given the shut working connection between auditors and customers and the fact that auditors are paid by their customers, it is emotionally impossible for an auditor to be free from prejudice. Numerous aspects of concern have been noted in the literary works for many years.
Shockley’s conceptual design highlighted on...

...appointed auditor – an external auditor holds office because of legal rules contained in CA 85 and 89.
2
AUDIT THEORIES
Postulates of auditing Academics have attempted to codify certain underlying principles or postulates, which serve as the basis of auditing theory. A postulate is a concept that can be observed to be relevant to some course of study. Certain postulates that underlie the practice of auditing have been...

...Transitive Property | If a = b and b = c, then a = c. |
Addition Postulate | If equal quantities are added to equal quantities, the sums are equal. |
Subtraction Postulate | If equal quantities are subtracted from equal quantities, the differences are equal. |
Multiplication Postulate | If equal quantities are multiplied by equal quantities, the products are equal. (also Doubles of equal quantities are equal.) |
Division...

...Geometry Definitions, Postulates and Theorems
Definitions Name Complementary Angles Supplementary Angles Theorem Vertical Angles Transversal Corresponding angles Same-side interior angles Alternate interior angles Congruent triangles Similar triangles Angle bisector Segment bisector Legs of an isosceles triangle Base of an isosceles triangle Equiangular Perpendicular bisector Altitude
Definition Two angles whose measures have a sum of 90o Two angles whose measures have a...

...Adrian Zwierzchowski
2 IB
Investigation – Von Koch’s snowflake curve
In this investigation I am going to consider a limit curve named after the Swedish mathematician Niels Fabian Helge von Koch. I will try to investigate the perimeter and area of Von Koch’s curve.
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The Koch’s curve has an infinite length because each time the steps above are performed on each line segment of the figure there are four times as many line segments, the...

...congruent to the corresponding part in the other.
(SSS) Side Side Postulate
If the three sides of a triangle are congruent to the three sides of another triangle, then the two triangles are congruent.
(SAS) Side Angle Side Postulate
If two sides and the included angle of a triangle are congruent to two sides and the included angle of another triangle, then the two triangles are congruent.
(ASA) Angle Side Angle Postulate
If two angles and...

...Another postulate of the kinetic molecular theory is that gas particles are always in motion, like the other states of matter. But they are different in that they undergo random translational movement. In solids, the particles mainly experience vibrational motion and in liquids they mainly vibrate and rotate, with some translational motion. Gas particles move rapidly in straight lines, unless acted upon by another particle or the walls of a container. This continuous contact...