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Editorial Team, Academic Writer

Welcome to Biology Notes Online! We are the BNO Team, dedicated to providing high-quality, accessible biology study notes for students and teachers alike. Our goal is to simplify complex biological concepts and present them in an easy-to-understand format, entirely free of charge. Whether you're preparing for exams, teaching a class, or simply passionate about biology, our comprehensive notes are designed to support your learning and teaching journey.

Antiviral Chemotherapy

Antiviral Chemotherapy

Vaccines have so far held the center position in efforts to stop viruses. They are inexpensive and secure, and the protection can last for a long time. But some viruses because of a number of reasons, aren’t compatible with this method like retroviruses, influenza as well as rhinoviruses and arboviruses.

Viral Life Cycle – Steps of Viral Infection

Ketolysis. Ketone bodies are broken down in a series of reactions in essentially the reverse of ketogenesis.

Introduction In our daily life, we are thinking about Viral Infection and their symptoms, when we get infected by any infectious virus such as the flu or the chickenpox. But ever you ask, what’s actually happening in your body when you have been infected by a virus? In biology, viral infection means viruses are started … Read more

Baltimore Classification System of Viruses

Electrochemical gradients

The virus uses the host’s complete system for protein translation because they lack translational machinery. Hence, the Baltimore classification system is based on this machinery how viruses use the host mechanism. Messenger RNA (mRNA) is the main focus of this classification system. In the beginning, there were six classes of viruses in Baltimore classification system … Read more

Viroids Definition, Infection, Structure, Examples, Diagnostic, Origin, Disease.

Viroids Replication

Viroids Definition Viroids Structure: Replication of Viroids or Infection of Viroids Viroid RNA replicates autonomously and spreads within the host by recruiting host proteins. There are three enzymes that help in RNA replication such as RNA pol. II, RNAase and RNA ligase. Viroid RNA don’t code for any plant protein and they lack AUG initiation … Read more

Laboratory Diagnosis of Viral Infections

Resonance forms

Diagnosis of viral infections Importance of Viral Diagnosis The Viral diagnosis will be particularly helpful in different clinical situations such as; Diagnosis Methods 1.  The Direct Examination of Specimen The direct method is accomplished by these following processes; 2. Indirect Method or cell cultures (Virus Isolation) The Cytopathic Effect (CPE) is present in both HSV … Read more

Cysticercosis – Definition, Symptoms, Treatment, Diagnosis

Development/Life Cycle of Taenia Solium

What is Cysticercosis? Clinical manifestations of Cysticercosis Cysticercosis is a parasitic infection caused by the larval stage of the tapeworm Taenia solium. The clinical manifestations of cysticercosis depend on the location of the cysticerci (larval stage) within the body. It’s worth noting that not all patients with cysticercosis will experience symptoms. Asymptomatic cysticercosis is often … Read more

Fasciola hepatica – Definition, Structure, Reproducation, Life Cycle

Life Cycle of Fasciola Hepatica Summery

Fasciola hepatica – Classification Kingdom Animalia Phylum Platyhelminthes Class Trematoda Subclass Digenea Order Echinostomida Genus Fasciola Species hepatica Fasciola hepatica General Characteristics Habitat of Fasciola hepatica Hosts of Fasciola hepatica History and distribution of Fasciola hepatica Epidemiology of Fasciola hepatica Morphology of Fasciola hepatica/Structure of Fasciola Hepatica Shape, Size and Colour External Morphology Internal Morphology The architecture of F. hepatica’s body … Read more

Foodborne Giardiasis – Definition, Pathogenesis, Contamination

Foodborne Giardiasis - Definition, Pathogenesis, Contamination

What is Foodborne Giardiasis? Characteristics of Giardia Giardia is a genus of microscopic, single-celled parasites that can cause the infection known as giardiasis. Here are some characteristics of Giardia: Overall, Giardia is a highly adaptable and resilient parasite that can cause a range of symptoms in humans and animals. By practicing good hygiene and food safety … Read more

Candidiasis – Definition, Causative Agent, Types, Transmission

Candidiasis - Definition, Causative Agent, Types, Transmission

Candidiasis, also known as a yeast infection, is a fungal infection caused by a group of yeasts called Candida. Candida is a normal part of the human microbiota and is commonly found in the mouth, gut, and female genital tract. However, when there is an overgrowth of Candida, it can cause infection. Candidiasis can occur … Read more

Fusarium spp – Definition, Structure, Pathogenesis

Fusarium spp - Definition, Structure, Pathogenesis

Kingdom: Fungi Division: Ascomycota Class: Sordariomycetes Order: Hypocreales Family: Nectriaceae Genus: Fusarium Fusarium is a large genus of filamentous fungi belonging to the hyphomycetes group, which is extensively distributed in soil and closely associated with plants. The majority of species are saprobes and are relatively abundant constituents of the soil microbiome. Certain species generate mycotoxins … Read more