Procaryotic structure and diversity, Biology

Assignment Help:

Procaryotic Structure and Diversity

The first organisms which did not have well defined nucleus, called procaryotes, (pro = earlier, caryon = nucleus) were probably anaerobic and heterotrophic. It is believed that at that time there was no free oxygen available in the atmosphere, and the autotrophs had a complex metabolism to prepare their own food. You can observe the difference between autotrophism and heterotrophism in Figure shown below.

1182_procaryotic.jpg

We will now discuss different types of procaryotes and their evolutionary relationship to draw an outline of orgahic evolution.The 'group of procaryotes' is known as Monera. This group includes eubacteria, archaebacteria, green bacteria, purple bacteria, virus, prochlorophyta, cyanophyta and mycoplasma. Here we will describe the structure of two procaryotes viz. bacteria and virus.

 


Related Discussions:- Procaryotic structure and diversity

Transport in phloem, Transport in Phloem The basic necessities of plan...

Transport in Phloem The basic necessities of plants, water, are taken up by the roots. Another purpose served by the roots is to absorb water soluble mineral nutrients from th

What are the methods of foams, What are the methods of foams? There are...

What are the methods of foams? There are two basic methods in  the formation of foams i.e. a) whipping and b) condensation.

How does consecutive protein production occur in translation, How many of t...

How many of the same proteins are made at the same time by each ribosome in the translation of one mRNA molecule? How does consecutive protein production occur in translation?

Explain nutrient cycling and their processes, Explain Nutrient Cycling and ...

Explain Nutrient Cycling and their processes? Two major processes are common to all ecosystems: nutrient cycling and the flow of energy. These two functions are carried out by

Nutrition, The oxidation of sugar in the cell of higher organisms takes pla...

The oxidation of sugar in the cell of higher organisms takes place in the ?

Define sample preparation for haemoglobin content in blood, Define Sample P...

Define Sample Preparation for Haemoglobin Content in Blood Wipe the index finger or middle finger with a cotton swab soaked in spirit. Prick the finger with a lancet op

How does the cd4 counting act to monitor the hiv infection, Q. How does the...

Q. How does the CD4 counting act to monitor the HIV infection? What is another laboratory method to follow up the disease? The CD4 counting test is complete from a blood sample

How different are the concepts of neoplasia-tumor and cancer, Q. How differ...

Q. How different are the concepts of neoplasia, tumor and cancer? Not all tumor is neoplastic and not every neoplasia creates tumor. The Tumor is the generic name given to the

Basic research terms - nursing research, Basic Research Terms: Some of...

Basic Research Terms: Some of the basic  terms that are defined  in  this section are:  Assumptions Operational Definitions  Variables  Delimitation and Limitation  H

Pre-embryo - human development, Pre-Embryo - Human Development About t...

Pre-Embryo - Human Development About thirty hours after fertilization the zygote goes through mitosis giving rise to 2 blastomeres. These blastomeres go through further cleava

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd