Calvin Cycle – Definition, Steps, Products, Functions

Calvin Cycle - Definition, Steps, Products, Functions

What is Calvin Cycle? The Calvin Cycle, also known as the C3 cycle or Calvin-Benson cycle, is a critical biochemical process in photosynthesis that enables plants to convert carbon dioxide into organic compounds, primarily glucose. Named after Melvin Calvin, who discovered the pathway in the 1950s, this cycle occurs in the stroma of chloroplasts in … Read more

Human Immunodeficiency Virus (HIV) – Overview

HIV-1 Genome and Structure

What is Human Immunodeficiency Virus (HIV)? Classification of HIV Human Immunodeficiency Virus (HIV) is classified into two primary types: HIV-1 and HIV-2. Both types belong to the Retroviridae family, specifically under the genus Lentivirus. These viruses exhibit significant diversity, which is crucial for understanding their epidemiology, transmission dynamics, and treatment options. Morphology of HIV Virus … Read more

Mycobacterium tuberculosis – Pathogenesis, Virulence, Treatment

Overview of Mtb infection. Mtb enters the human body through the airway where it engages the innate immune system within the alveolar space. Macrophages and dendritic cells ingest the bacteria, recruiting new cells and activating adaptive immunity. Together, the innate and adaptive immune systems collaborate to eradicate the bacteria or restrict its active replication within a granuloma. Active tuberculosis occurs either after primary infection or after reactivation due to immunodeficiency, leading to symptomatic disease and transmission to a new host to start a new infection cycle.

Classification of Mycobacterium tuberculosis The genus Mycobacterium comprises over 70 species, several of which are pathogenic to humans. The most notable among these is Mycobacterium tuberculosis, the bacterium responsible for tuberculosis (TB). Understanding the classification of M. tuberculosis and its related species is crucial for medical research and public health. Culture of Mycobacterium tuberculosis The … Read more

Osmosis – Definition, Types, Mechanism, Significance, Examples

Osmosis - Definition, Types, Mechanism, Significance, Examples

What is Osmosis? Definition of Osmosis Osmosis is the spontaneous movement of solvent molecules, typically water, through a selectively permeable membrane from a region of lower solute concentration to a region of higher solute concentration, aiming to equalize solute concentrations on both sides. How Does Osmosis Work? Osmosis is a fundamental process that facilitates the … Read more

Factors That Affects Enzyme Activity

Factors That Affects Enzyme Activity

What is Enzyme? Factors That Affects Enzyme Activity Enzyme activity, a crucial aspect of biological processes, is influenced by several key factors that dictate the rate and efficiency of enzymatic reactions. Understanding these factors is vital for comprehending the intricacies of enzyme functioning. Let us delve into the six main factors that affect enzyme activity: … Read more

Collagen – Definition, Structure, Types, Functions

Collagen - Definition, Structure, Types, Functions

What is Collagen? Definition of Collagen Collagen is the most abundant protein in the body, providing structural support to connective tissues such as skin, bones, tendons, and ligaments. It consists of a triple helix of amino acids, forming a framework that maintains the integrity and elasticity of various tissues. Collagen plays crucial roles in wound … Read more

Classification of Protein On the Basis of Structure, Composition, Functions

Classification of Protein On the Basis of Structure, Composition, Functions

What is Protein? Classification of protein On the Basis of Structure 1. Fibrous protein Fibrous proteins are a distinct category of proteins characterized by their elongated or fiber-like structure. These proteins are primarily found in animals and play specific roles in structural support. Therefore, understanding their nature, structure, and function is essential for a comprehensive … Read more

Peptide Bond – Definition, Structure, Formation, Hydrolysis, Examples

Peptide Bond - Definition, Structure, Formation, Hydrolysis, Examples

What Is a Peptide Bond? Definition of Peptide Bond A peptide bond is a covalent bond formed between the α-carboxyl group of one amino acid and the α-amino group of another, resulting in the release of a water molecule. This bond links amino acids together in a peptide or protein chain and is characterized by … Read more

Amino Acids – Physical Properties, Structure, Classification, Functions

Amino Acids Physical Properties, Structure, Classification, Functions

What are Amino Acids? Definition of Amino Acids Amino acids are organic compounds that serve as the building blocks of proteins. They consist of carbon, hydrogen, and nitrogen atoms and play essential roles in the proper functioning of living organisms. List of 20 Amino acids with the chemical formula Alanine C3H7NO2 Leucine C6H13NO2 Aspartic Acid … Read more

Virus – Structure, Origin, Replication, Classification, and Example.

Anaerobic Respiration

What are Viruses? Origins of Viruses Viruses have likely existed since the earliest life forms and have evolved alongside cellular organisms. Due to their lack of fossil records, the origins of viruses remain unclear, and scientists use molecular biology techniques to explore their evolutionary history. Three primary hypotheses attempt to explain how viruses may have … Read more

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