Miller-urey''s experimental procedure, PL-SQL Programming

Assignment Help:

MILLER-UREY'S EXPERIMENTAL PROCEDURES -

They recreated the probable conditions on the primitive earth in the laboratory.
An atmosphere containing hydrogen, ammonia, methane in ratio of 2 : 1 : 2 and water vapour was created in one chamber of a spark discharge apparatus and condensed liquids were allowed to accumulate in the other chamber.
Energy was supplied by heating the liquid containing chamber as well as by electric sparks from electrodes in the gaseous chamber. Experiment was performed at 800°C for 7 days.

1609_miller experiment.png

They observed that amino acids like glycine, alanine aspartic acid and some more complex organic compounds were formed in vitro when the mixture of water vapours, methane, ammonia and hydrogen gasses in a close chamber is subjected to electric discharge for a few days.
This experiment confirmed the possibility of a biogenic synthesis of various containing complex organic compounds from the amino acids reducing mixture of simple gases.
Calvin Melvin (1958) irradiated CO and H₂O directly in a cyclotron and obtained formic acid, succinic acid and oxalic acid.

Related Discussions:- Miller-urey''s experimental procedure

Explicit cursor attributes, Explicit Cursor Attributes The cursor varia...

Explicit Cursor Attributes The cursor variable or each cursor has four attributes: %FOUND, %ISOPEN, %ROWCOUNT, and %NOTFOUND. When appended to the cursor or cursor variable, th

Anatomy of a table, Anatomy of a Table: Figure shows the terminology u...

Anatomy of a Table: Figure shows the terminology used in SQL to refer to parts of the structure of a table. As you can see, SQL has no official terms for its counterpa

Data types in sql - xml, Data Types in SQL - XML, Array, Row ...

Data Types in SQL - XML, Array, Row BINARY LARGE OBJECT for arbitrarily large bit strings. XML for XML documents and fragments. ARRAY types for arrays.

Tables within a table - sql, Tables within a Table - SQL Figure here ...

Tables within a Table - SQL Figure here is an exact copy of the one in the theory book and as before it is just an alternative way of representing some of the information con

Operators on tables and rows, Operators on Tables and Rows Row Extrac...

Operators on Tables and Rows Row Extraction TUPLE FROM r, SQL has row subqueries. These are just like scalar subqueries except that they may specify more than one column.

Comparison operators - sql operators, Comparison Operators Usually, yo...

Comparison Operators Usually, you use the comparison operators in the WHERE clause of a data manipulation statement to form the predicates, that compare one expression to anot

Miller-urey''s experimental procedure, MILLER-UREY' S EXPERIMENTAL PROCEDU...

MILLER-UREY' S EXPERIMENTAL PROCEDURES - They recreated the probable conditions on the primitive earth in the laboratory. An atmosphere containing hydrogen, ammonia, me

Semijoin and composition - sql, Semijoin and Composition - SQL For sem...

Semijoin and Composition - SQL For semijoin, the dyadic relational operator MATCHING, defined thus: r1 MATCHING r2, where r1 and r2 are relations such that r1 JOIN r2 is de

Using invoker rights in pl sql, Using Invoker Rights: By default, the ...

Using Invoker Rights: By default, the stored procedure executes with the privileges of its definer, not its invoker. These procedures are bound to the schema in which they inh

Functions in pl/sql, Functions The function is a subprogram that cal...

Functions The function is a subprogram that calculates a value. The Functions and procedures are structured similar, except that the functions have a RETURN clause. You can

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages