About Microscopic Organism

ALL POSTS FROM CATEGORY


Bacterium Diagram
October 9, 2018

Bacterium Diagram

The illustration shows a generalised bacterium with many of the main components illustrated. No real organism would have all of these features. The image above is 400 pixels across and the original is 5, 438 pixels across. CELL WALL The top half of the diagram shows a Gram +ve bacterium with its thick peptidoglycan outer wall closely apposed to the inner plasma…

Facts About Bacterial cell
September 13, 2018

Facts About Bacterial cell

It turns out, there are more reasons to love bacteria than to fear them — the latest being a the discovery of a new bacteria-based antibiotic that allows scientists to fight infections that kill hundreds of thousands of people each year! But there’s more to bacteria than their antibiotic qualities. Check out these nine facts — some of them may surprise you: This…

Capsule of a cell
September 4, 2018

Capsule of a cell

Fourteen years ago, during the darkest moments of the “stem-cell wars” pitting American scientists against the White House of George W. Bush, one group of advocates could be counted on to urge research using cells from human embryos: parents of children with type 1 diabetes. Motivated by scientists who told them these cells would lead to amazing cures, they spent…

Bacteria cell Pili
August 20, 2018

Bacteria cell Pili

Pili-plural for pilus-are hairlike appendages found on the surface of many bacteria. Pili are fragile and need to be constantly replaced. The pili (plural) or pilus (singular)is a biological molecule that is on the surface of many bacteria. It is sometimes described as a hair structure. The term pilus comes from the latin word thread or fiber. All of the pili…

Taxonomic Methods
July 15, 2018

Taxonomic Methods

Heterotrophic flagellates contribute significantly to the matter flux in aquatic and terrestrial ecosystems. Still today their quantification and taxonomic classification bear several problems in field studies, though these methodological problems seem to be increasingly ignored in current ecological studies. Here we describe and test different methods, the live-counting…

Microbe Classification
June 27, 2018

Microbe Classification

The Baltimore system of virus classification devised by virologist & Nobel laureate David Baltimore is based on the genomic nature of the viruses. The central theme of Baltimore system of virus classification is ‘all viruses must synthesize positive strand mRNAs from their genomes, in order to produce proteins and replicate themselves’. The precise mechanisms…

Structure and Function of Bacterial cell Component
June 3, 2018

Structure and Function of Bacterial cell Component

Although a given bacterial species has a basic, characteristic PG structure, the PG layer remains in a dynamic state throughout a bacterium s life, and PG structure is the result of complex biosynthetic, maturation, and degradation reactions, which will be described below. Structural analysis of PG muropeptides using HPLC and mass spectrometry has allowed the…

Bacteria Type of cell
May 13, 2018

Bacteria Type of cell

Scientists have created a 3D image of a molecular structure that many different bacteria use to pump toxins into humans cells and spread antibiotic-resistance genes to other bacteria. Experts predict that by 2050, antibiotic-resistant bacteria will cause as many deaths as cancer. For the study, published in, researchers looked specifically at Legionella, the…

Bacterial cell Structures and Functions
April 22, 2018

Bacterial cell Structures and Functions

KEY CONCEPTS: A cell is the basic unit of life, as we understand it. Whilst the overall workings of all cells are very similar, there is no such thing as the conveniently termed ‘typical cell’ but cells within the two main groups of organisms, the prokaryotes (mainly bacteria) and the eukaryotes (higher animals and plants), have many chemical and physical features…

Bacteria cells Organelles
April 4, 2018

Bacteria cells Organelles

Bacteria are microscopic (very tiny) organisms that are unicellular (made up of a single cell). Bacterium is the term for a single bacteria. Evolution of Bacteria : These primitive organisms were among the first to appear on Earth; bacteria evolved roughly 3.5 billion years ago. The oldest-known fossils are those of bacteria-like organisms. Discovery of Bacteria:…

Cell Structure, Function
March 5, 2018

Cell Structure, Function

WHY did nature evolve cellular structures? In, I laid out a structural classification of cellular structures in nature, proposing that they fall into 6 categories. I argued that it is not always apparent to a designer what the best unit cell choice for a given application is . While most mechanical engineers have a feel for what structure to use for high stiffness…

Cells Parts and Descriptions
February 18, 2018

Cells Parts and Descriptions

Britannica Lists & Quizzes Wilfredo R. Rodriguez H. Think back to your high school biology class. Do you still remember the names and functions of all those little cell parts? A little foggy on the details, perhaps? Here’s a quick refresher course of some of the major eukaryotic organelles to keep your science skills sharp. It might come in handy for…

Bacteria cell wall Diagram
February 3, 2018

Bacteria cell wall Diagram

The Gram positive cell wall has a thick peptidoglycan (orange red in this picture) layer outside the plasma membrane. There may be a gap or periplasmic space between the peptidoglycan layer and the plasma membrane. Various membrane proteins can be seen floating in the plasma membrane. Elongate molecules called teichoic acids intermesh with the peptidoglycan layer…

Where is the Cytoplasm found?
January 31, 2018

Where is the Cytoplasm found?

The intracellular fluid of inside a cell called the cytosol. It is separate from certain cell organelles such as the nucleus and the mitochondria. In eukaryotes, the cytoplasm is the content within a cell membrane minus the content in the cell nucleus. It is where many metabolic reactions occur, there are still others within organelles. In prokaryotes, cytosol…

BBC Micro Organism
January 22, 2018

BBC Micro Organism

Ancient bacteria trapped in a state of suspended animation for 250 million years are the world s oldest living things, claim US scientists. The microbes are ten times older than any previously discovered living organism and may reopen the debate about the origins of life on Earth. The bacteria were found in salt crystals buried almost 609 metres (2, feet) below…

Bacterial cell with Labels
January 10, 2018

Bacterial cell with Labels

Visualization of mycobacterial membrane dynamics in live cells Journal of the American Chemical Society Rodriguez-Rivera, Zhou, Theriot, and Bertozzi 2017 139 (9), pp 3488–3495 Abstract: Mycobacteria are endowed with a highly impermeable mycomembrane that confers intrinsic resistance to many antibiotics. Several unique mycomembrane glycolipids have been isolated…

Smallest Bacterial cell
December 20, 2017

Smallest Bacterial cell

The word bacterium was probably used for the first time in the 1850s by Casimir Davaine who used the term to mean rod or staff . There are three different basic forms of bacteria. Their role is normally related to diseases. There are the bacillus; which are rectangular with sharply rounded ends, which varies in diameter between 20 µm and 0.5 µm. The second…

Soil Microorganisms Bacteria
December 13, 2017

Soil Microorganisms Bacteria

Amongst the different microorganisms inhabiting in the soil, bacteria are the most abundant and predominant organisms. These are primitive, prokaryotic, microscopic and unicellular microorganisms without chlorophyll. Morphologically, soil bacteria are divided into three groups viz Cocci (round/spherical), (rod-shaped) and Spirilla I Spirllum (cells with long…

Organelles Include
December 7, 2017

Organelles Include

In cell biology, an organelle is a specialized structure within a cell that performs a specific function and that generally is considered to be separately enclosed within its own lipid membrane. For example, the nucleus of a cell is an organelle that maintains the integrity of genes and controls cell activity by regulating gene expression. Lysosomes are organelles…

Science Fungi
November 28, 2017

Science Fungi

MycoWorks mushroom leather. Credit: Science Friday As it stands, the mushroom is a pretty multi-purpose organism: Aside from its ecological functions, it can be eaten as nourishment, brewed as tea, taken as a naturopathic remedy, and used in dyes. But a San Francisco start-up by the name of MycoWorks has even more plans for mushrooms, starting with a leather-like…

What are the Different Types of microbes?
November 22, 2017

What are the Different Types of microbes?

Propionibacterium acnes bacteria are found deep in the hair follicles and pores of the skin, where they usually causes no problems. However, if there is an over-production of sebaceous oil, they grow, producing enzymes that damage the skin and cause acne. Credit: SCIENCE PHOTO LIBRARY/Getty Images Propionibacterium acnes thrive on the oily surfaces of the skin…

Prokaryotic cell Nucleoid
November 10, 2017

Prokaryotic cell Nucleoid

The nucleoid is an irregularly-shaped region within the cell of a prokaryote that contains all or most of the genetic material. Learning Objective Evaluate the nucleoid in prokaryotes Key Points The genome of prokaryotic organisms generally is a circular, double-stranded piece of DNA, multiple copies of which may exist at any time. The length of a genome varies…

Bacterial cell Labeled Diagram
September 20, 2017

Bacterial cell Labeled Diagram

One of the first things you learn once you start taking biology as a subject is that life is split into two separate domains - prokeryotes and eukaryotes. Prokaryotes are small and blobby and have no nucleus or internal organisation, while eukaryotes are big and multicellular and contain not just a nucleus, but all sorts of other organelles inside the cell such…

Bacterial Organelles
September 14, 2017

Bacterial Organelles

Researchers at Berkeley Lab and MSU have obtained the first atomic-level view of an intact bacterial microcompartment, shown here. Credit: Markus Sutter/Berkeley Lab and MSU Scientists are providing the clearest view yet of an intact bacterial microcompartment, revealing at atomic-level resolution the structure and assembly of the organelle s protein shell. The…

Role of humus in soil
August 24, 2017

Role of humus in soil

What sounds like a healthy dip and is good for soil fertility? The unexpected answer is: humus. While for many hummus is the ultimate dip, humus is the ultimate organic soil. Humus, which literally means “earth” and “ground” in Latin, is made from decomposed plants and other organic materials¹. Because of its high ratio in organic compounds, humus is also very…

Meaning of Micro organisms
August 3, 2017

Meaning of Micro organisms

She said that despite these tests, the precise microorganism cannot be identified in up to half of the people who have pneumonia and when the person is severely ill and is not helped by initial therapy and doctors can try to obtain better samples, often by inserting a long flexible tube (bronchoscope) into the airways.The effective microorganism enhances the…

Types of Microbes in soil
January 28, 2017

Types of Microbes in soil

RELATIVE AMOUNTS OF BACTERIA AND FUNGI All soils contain both bacteria and fungi, but they may have different relative amounts depending on soil conditions. The general ways in which you manage your soil—the amount of disturbance, the degree of acidity permitted, and the types of residues added—will determine the relative abundance of these two major groups of…

1
2