Structure - Biology Notes Online

Protozoa – Definition, Classification, Characteristics, Structure, Locomotion, Examples

Published on October 1, 2024 25 min readby BNO Team

What is Protozoa? Protozoa Definition Protozoa are a diverse group of single-celled eukaryotic organisms that can be either free-living or parasitic. They primarily feed on organic matter, including microorganisms and organic debris. Protozoa are characterized by their lack of a rigid cell wall, motility, and heterotrophic feeding habits. Examples include Amoeba, Paramecium, Euglena, and Trypanosoma. … Read more

Prions – Definition, Structure, Replication, Function, Disease

Last Updated October 14, 2024 0 revisions 28 min readby BNO Team

Prions Disease: Definition, Structure, Prevention, Control, Treatment, Transmission.

What are Prions? Definition of Prion A prion is an infectious, misfolded protein that causes neurodegenerative diseases by inducing abnormal folding of normal cellular proteins, leading to the accumulation of these misfolded proteins in the brain. Unlike other infectious agents, prions lack nucleic acids and propagate their abnormal structure through direct protein-protein interactions. Characteristics of … Read more

RNA – Definition, Structure, Types, Application

Published on May 31, 2024 42 min readby BNO Team

What is RNA? Definition of RNA RNA, or Ribonucleic acid, is a nucleic acid molecule that plays a crucial role in gene expression and protein synthesis. It is a single-stranded molecule composed of nucleotides, including adenine (A), cytosine (C), guanine (G), and uracil (U). RNA carries genetic information from DNA and acts as a template … Read more

Amoeba Cell – Labeled Structure, Characteristics, Movement, Nutrition, Reproduction, Disease, Habitat.

Published on April 8, 2024 13 min readby BNO Team

In this article, we will learn about the Habitat, structure, nutrition, characteristics, reproduction, locomotion of the Amoeba cell with diagram. Domain Eukaryota Phylum Amoebozoa Class Tubulinea Order Euamoebida Family Amoebidae Genus Amoeba Amoeba cell also known as the ameba or amoeboid. Amoeba is a unicellular eukaryotic organism which can alter their shape by extending and … Read more

Plastids – Types, Structure, Functions

Published on April 7, 2024 22 min readby BNO Team

Plastid is a two-membrane-bound organelle that is involved in the synthesis and preservation of nutrients. typically found in the photosynthesis cells of plants. Plastids were first discovered and identified in the work of Ernst Haeckel, but A. F. W. Schimper was the first to offer an accurate definition.

Endospore – Definition, Formation, Germination, Structure, Resistance

Published on April 6, 2024 6 min readby BNO Team

Endospores are dormant, tough, resistant, and non-reproductive structures which are produced by gram-positive bacterial cell (such as bacillus, clostridium) in the phylum firmicutes during the unfavorable condition of the environment.