Customer Service Chat
Get quote & make Payment
Theory of biogenesis, PL-SQL Programming
THEORY OF BIOGENESIS
This theory explains that the existing living organisms originated from pre-existing living beings not from non living entities.
This concept of origin of life was supported by various evolutionists on the basis of their experiments.
All such evolutionists have rejected the concept of autogenesis or abiogenesis.
(1626-98) conducted an experiment in which he cooked some meat so that no organisms were left alive and placed them in three jars; one jar left uncovered, one jar was covered with muslin cloth and the third jar covered with parchment paper.
After a week, he observed that maggots appeared only in that jar which was uncovered not in those jars that were covered by either muslin cloth or parchment paper.
He concluded that flies arise from the eggs laid down by parent flies in the uncovered jar. On the basis of this experiment
Redi had discarded the concept of spontaneous generation.
(1729-99) prepared a nutritive broth of vegetables and flesh and placed it in flasks and sealed the necks of the flasks just to check the entry of air. He boiled the broth for four hours and left these flasks as such for many days.
e observed that no living organisms appeared in broth of flasks and hence he concluded that
microorganisms are formed not spontaneously, but from those already present in the air.
(1822-95) refused the concept of spontaneous generation on the basis of an experiment.
He has taken a mixture of sugar and yeast syrup and put this mixture into
The contents of the flask were boiled till steam passed out the tube and then they were cooled.
did not found any change in the content of the flaks after a considerable longer period of time and no growth of organisms was observed.
He concluded his experiment with an inference that when the air entered the flask, all air-born particles got stuck at the bend of the tube and only the pure air reached the syrup that remained sterile.
He broke the neck of the flask.
This made a direct contact of syrup with the air and a thick growth of microorganisms appeared in the flask.
By this experiment and result,
Pasteur conclusively disproved the idea of spontaneous generation.
Posted Date: 10/8/2012 8:38:24 AM | Location : United States
Ask an Expert
Theory of biogenesis, Assignment Help, Ask Question on Theory of biogenesis, Get Answer, Expert's Help, Theory of biogenesis Discussions
Write discussion on Theory of biogenesis
Your posts are moderated
Write your message here..
Interesting properties of cross join - sql, Interesting properties of CROSS...
Interesting properties of CROSS JOIN - SQL Compare these with the "interesting properties of JOIN", CROSS JOIN is associative but not commutative. Unlike JOIN and NATURAL JOI
Declare keyword description in pl sql, DECLARE : This keyword signals t...
DECLARE : This keyword signals the beginning of the declarative section of the PL/SQL block, that contains local declarations. The Items declared locally exist only within the
Literals in pl/sql, Literals A literal is an explicit numeric, string...
Literals A literal is an explicit numeric, string, character, or Boolean value not represented by an identifier. Numeric literal 147 and the Boolean literal FALSE are some of
Calculate the number of tuples, Question: (a) The objective of query opti...
Question: (a) The objective of query optimization is to choose the most efficient strategy for implementing a given relational query, thereby improving the system performance. On
Components of an object type - attributes in pl/sql, Attributes: Just ...
Attributes: Just similar to variable, an attribute is declared with a name and datatype. The name should be exclusive within the object type. The datatype can be any Oracle ty
Advantages of packages, Advantages of Packages The benefits of the Pack...
Advantages of Packages The benefits of the Packages are as shown below: Modularity The Packages encapsulate logically associated items, types, and subprograms in the
Defining records, Defining and Declaring Records To create records, yo...
Defining and Declaring Records To create records, you have to define a RECORD type, and then declare records of that type. You may also define RECORD types in the declarative
Transaction visibility, Transaction Visibility As the figure shows, th...
Transaction Visibility As the figure shows, the changes made by an autonomous transaction become visible to another transaction whenever the autonomous transaction commits. Th
Example of groupby operator - sql, Example of GROUPBY Operator Example...
Example of GROUPBY Operator Example: How many students sat each exam, using GROUP BY, NATURAL LEFT JOIN, and COALESCE SELECT CourseId, COALESCE (n, 0) AS n FROM COURS
Rollback behavior - bulk bind performance improvement, Rollback Behavior ...
Rollback Behavior When a FORALL statement fails, the database changes are rolled back to an implicit savepoint marked before each of the SQL statement execution. The Changes t
Accounting Assignment Help
Economics Assignment Help
Finance Assignment Help
Statistics Assignment Help
Physics Assignment Help
Chemistry Assignment Help
Math Assignment Help
Biology Assignment Help
English Assignment Help
Management Assignment Help
Engineering Assignment Help
Programming Assignment Help
Computer Science Assignment Help
Why Us ?
~24x7 hrs Support
~Quality of Work
~Time on Delivery
~Privacy of Work
Human Resource Management
Literature Review Writing Help
Terms & Conditions
Copyright by ExpertsMind IT Educational Pvt. Ltd.