Cell – Structure, Characteristics, Types, Size and Shape, Functions

Cell - Structure, Characteristics, Types, Size and Shape, Functions

What is a Cell? Definition of Cell A cell is the smallest, basic unit of life that performs essential functions such as growth, reproduction, and energy processing, and serves as the structural and functional building block of all living organisms. Discovery of Cells The discovery of cells marked a turning point in biological science, revealing … Read more

Mode of Transport Across Plasma Membrane

Mode of Transport Across Plasma Membrane

Types of Membrane Transport Membrane transport refers to the movement of molecules across cell membranes. This process is essential for maintaining cellular homeostasis and involves multiple mechanisms, which can be classified based on energy requirements. The types of membrane transport are broadly categorized into passive and active transport. Passive transport It is a sort of … Read more

Reactive Oxygen Species (ROS) – Definition, Types, chemistry, Defence, Roles

Reduction of oxygen and its byproducts.

What is Reactive Oxygen Species (ROS)? Types of reactive oxygen species (ROS) Reactive oxygen species (ROS) encompass a diverse range of oxygen-containing molecules that exhibit significant chemical reactivity. These species are primarily generated as byproducts of cellular metabolism, particularly through mitochondrial oxidative phosphorylation, as well as through various enzymatic processes. Understanding the types of ROS … Read more

Plasmodesmata – Definition, Structure, Functions and Diagram

Plasmodesmata: Definition, Structure, Functions and Diagram

What is Plasmodesmata? Definition of Plasmodesmata Plasmodesmata are microscopic channels that traverse the cell walls of plant and algal cells, allowing for direct transport and communication between adjacent cells. These structures enable the movement of water, proteins, small RNAs, and other metabolites, playing a crucial role in cellular connectivity and plant physiology. Structure of Plasmodesmata … Read more

Biomolecule – Definition, Types, Structure, Examples, Significance

Biomolecule - Definition, Types, Structure, Examples, Significance

What are Biomolecules? Definition of Biomolecule A biomolecule is any organic molecule that is essential for life and is involved in the structure, function, and regulation of the cells and tissues in living organisms. Common types of biomolecules include carbohydrates, lipids, proteins, and nucleic acids. Types of Biomolecules – Four Major Types of Biomolecules Biomolecules … Read more

Cell Division – Definition, Types, Mitosis, Meiosis, Cell cycle

Cell Division

What is Cell Division? Definition of Cell Division Cell division is the process by which a single cell divides to produce two or more new cells, essential for growth, repair, and reproduction in living organisms. Discovery of Cell Division The discovery of cell division is a fundamental aspect of cellular biology, providing insights into the … Read more

Nervous System – Definition, Parts, Functions

Nervous System - Definition, Parts, Functions

What is Nervous System? Definition of Nervous System The nervous system is a complex network of cells and tissues that coordinates and regulates the activities of an organism by transmitting electrical signals between different parts of the body. Cells of the Nervous System Neurones Glial Cells Astrocytes Oligodendrocytes Microglia Ependymal cells Nervous System Structure and … Read more

Animal Cell – Diagram, Structure, Types, Functions

Animal Cell Labeled Diagram, Structure, Types, Functions

Animal cell are considered to be the fundamental living species belonging to the kingdom Animalia. They are eukaryotic cells which means they possess an actual nucleus as well as organelles, which are special structures which perform various functions. Animal cells don’t have specific organelles for plants, such as cell walls that support the plant cell or the chloroplasts, an organelle that is responsible for photosynthesis.

Microvilli – Definition, Structure, Functions and Diagram

Microvilli - Definition, Structure, Functions and Diagram

Microvilli are tiny, finger-like projections found on the surface of epithelial cells throughout the body, particularly in the small intestine. These structures significantly increase the surface area of the cells, enhancing their ability to absorb nutrients and other substances. The primary functions of microvilli include facilitating nutrient absorption, aiding in the process of fertilization, supporting … Read more

Zygote – Definition, Formation, Development, Example

Zygote - Definition, Formation, Development, Example

What is a Zygote? A zygote is a crucial concept in biology, representing the very first stage of a new organism’s development following the fertilization event. The term “zygote” (pronounced /ˈzaɪˌɡoʊt/) originates from the Ancient Greek word ζυγωτός (zygōtós), meaning ‘joined’ or ‘yoked,’ derived from ζυγοῦν (zygoun), which means ‘to join’ or ‘to yoke’. This … Read more

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