Algae is a heterogeneous group of organisms containing members having chlorophyll ‘a’ as their primary photosynthetic pigments. These green chlorophyll molecules along with some accessory pigments are contained generally in a membrane-bound packet-like structure called chloroplast within the algal body. In some members, the chloroplast is absent though; such as …
Read More »Transcription: The Mechanism of pre-mRNA Synthesis
Transcription is the synthesis of RNA molecule using one of the DNA strands as a template. It is the first step in the transfer of genetic information from genotype to phenotype. However, this process of transcription is a highly selective one i.e definite genes are transcribed only when their products …
Read More »Regulation of Gene Expression in Prokaryotes: General features and Significance
Every cell of an organism possesses all the structural genes or cistrons. The genes produce proteins and control the activities of the organism. But a genetic system doesn’t allow them to function all at a time in order to avoid enzymatic chaos. Many gene products are only needed occasionally by …
Read More »Sphagnum: A Useful Peat
(AB: This article only contains the use of peat from Sphagnum and it’s uses in gardening. Although some constructive discussions are in here to facilitate it, they are not exhaustive.) If you are fond of gardening or concerned about the dying condition of your trees, this article will be helpful …
Read More »Porella: The Leafy Liverworts
Systematic Position Division : Bryophyta Class : Hepaticopsida Order : Jungermanniales Family : Porallaceae Genus : Porella Habit And Habitat Get Free Netflix Now Best safe and secure cloud storage with password protection GPL Themes For Free Get Envato Elements, Prime Video, Hotstar and Netflix For …
Read More »Friendly Behaviour Of Bacteria
When we heard about bacteria the first thing that came to our mind is that it must be harmful for us. And it’s very common because the word”bacteria” generally indicates some sort of disease and is likely to repulse and scare we off. Scientists estimate that only 1-10% of total …
Read More »Essential Oil: A Concentrated Hydrophobic Liquid
Essential Oil Essential oil is a concentrated hydrophobic liquid containing volatile aroma compounds from plants. They are usually lipophilic (literally: oil-loving) compounds that usually are not miscible with water. Also, they can be diluted in solvents like pure ethanol and polyethylene glycol. They are also known as volatile oils, ethereal …
Read More »Terpenoids: A Structurally Diverse Class of Natural Products
An enormous range of plant substances are covered by the term ‘Terpenoids’ which is used to indicate that all such substances have a common origin. This Terpenoids are a diverse group of naturally occurring organic compounds mostly found in plants. They are any of a class of hydrocarbons that consist …
Read More »উদ্ভিদপ্রেমীদের চোখে কার্জনহল দেখতে যেমন
ঢাকা বিশ্ববিদ্যালয়ের উদ্ভিদবিজ্ঞানের ছাত্রছাত্রীদের গাছের নাম জানা শুরু হয় কার্জনের গাছ দেখেই। কত হরেক রকম গাছ আছে আমাদের এই কার্জনে, আর উদ্ভিদবিজ্ঞানের বাগানে ঢুকলে তো কথাই নেই। তবুও বাস্তবতা হচ্ছে চোখের সামনের অধ্যয়নের বিষয় থাকলেও চার বছর ধরে দেখা এই গাছগুলোর নাম জিজ্ঞেস করা হলে হয়তো আমাদের উদ্ভিদবিজ্ঞানেরই অনেক ছাত্র …
Read More »Ascomycetes : An Introduction
INTRODUCTION Ascomycota is a phylum of fungi classification containing a compartmentalized mycelium, a dikaryotic life stage in the life cycle, plectenchymatous structures associated with spore production, conidia, and sometimes complex dispersal systems. The primitive morphological character that distinguishes members of Ascomycota from all other fungi is the Ascus (pl. asci, …
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