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

Using delete - collection method, Using DELETE This process has three ...

Using DELETE This process has three forms. The DELETE removes all elements from the collection. DELETE(n) removes the nth element from the nested table. When n is null, then D

Triggers, At times, customers make mistakes in submitting their orders and ...

At times, customers make mistakes in submitting their orders and call to cancel the order. Brewbean’s wants to create a trigger that automatically updates the stock level of all pr

Sql queries, SELECT a.child_fname,a.child_lname,concat(b.parent_title,b.par...

SELECT a.child_fname,a.child_lname,concat(b.parent_title,b.parent_fname), b.parent_lname,b.parent_tphone FROM child a,parent b WHERE a.parent_id=b.parent_id ORDER BY a.child_fnam

Transaction control, Transaction Control The Oracle is transaction orie...

Transaction Control The Oracle is transaction oriented; that is, Oracle uses the transactions to make sure the data integrity. The transaction is a sequence of SQL data manip

Effects of null for multiple assignments - sql, Effects of NULL for Multipl...

Effects of NULL for Multiple Assignments - SQL If the row expression given as the source for a multiple assignment evaluates to NULL, then NULL is assigned to each target. If

Conditionals - sql, Conditionals - SQL At first sight SQL does not app...

Conditionals - SQL At first sight SQL does not appear to have a single operator for expressing logical implication. In this respect it would be in common with most programming

Heap sort algorithm in pl sql, I want to implement heap sort algorithm in p...

I want to implement heap sort algorithm in pl sql please share the source code for guidance

Pl/sql assignment, 1. a. Write a trigger that fires when a part's price...

1. a. Write a trigger that fires when a part's price is updated. The trigger will write a record into a table called PriceUpdates. The record should contain the information of

Use of table comparisons - sql, Use of Table Comparisons - SQL Table ...

Use of Table Comparisons - SQL Table comparisons where it is noted that although table expressions cannot be compared, we have TABLE (t) to convert a table expression t into

Defining ref cursor types, Defining REF CURSOR Types To make cursor va...

Defining REF CURSOR Types To make cursor variables, you take 2 steps. At first, you define a REF CURSOR type, and then declare the cursor variables of that type. You can defin

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages