Online Microbiology and Biology Notes
Acute disease definition Acute disease is a condition or a disorder that comes on or onsets rapidly and lasts for a shorter period of time. The period of time associated with acute diseases varies with the type of illness and the context, but it is always quantitatively shorter in time when compared to chronic diseases. … Read more 13 Differences between Acute disease and Chronic disease
Absorption Definition Absorption, in biology, is the process of taking or assimilating substances into the cell or across the tissues by the process of diffusion or osmosis. Absorption of substances into a cell or tissue usually occurs through the general surface of the cell. The rate and process of absorption depend on a number of … Read more 10 differences between Absorption and Adsorption (Absorption vs Adsorption)
Actin Definition Actin is a group of globular proteins that are the most abundant proteins in most eukaryotic cells and help in providing shape, structure, and mobility to the body. Actin is present in all eukaryotes except for the nematode sperm. The actin proteins are highly conserved and participate in more protein-protein interactions than any … Read more 14 differences between Actin and Myosin (Actin vs Myosin)
Unitwise Marking Scheme of CBSE Class 11 Biology Unit Title Marks I Diversity of Living Organisms 15 II Structural Organisation in Plants and Animals 8 III Cell: Structure and Function 15 IV Plant Physiology 15 V Human Physiology 17 Total 70 Unit-I Diversity of Living Organisms Chapter-1: The Living World What is living? Biodiversity; Need … Read more CBSE Class 11 Biology Syllabus (2020-2021)
Unitwise Marking Scheme of CBSE Class 12 Biology Unit Title Marks VI Reproduction 14 VII Genetics and Evolution 18 VIII Biology and Human Welfare 14 IX Biotechnology and its Applications 12 X Ecology and Environment 12 Total 70 Unit-VI Reproduction Chapter-1: Sexual Reproduction in Flowering Plants Flower structure; development of male and female gametophytes; pollination … Read more CBSE Class 12 Biology Syllabus (2020-2021)
Image Source: AB Tasty. Type 1 error definition Type 1 error, in statistical hypothesis testing, is the error caused by rejecting a null hypothesis when it is true. Type 1 error is caused when the hypothesis that should have been accepted is rejected. Type I error is denoted by α (alpha) known as an error, … Read more Type I Error and Type II Error with 10 Differences
Homeostasis Definition Homeostasis is the ability of living systems to maintain a steady and uniform internal environment to allow the normal functioning of the systems. It is the tendency to achieve equilibrium against various natural and environmental factors. Homeostasis results in a dynamic equilibrium, where continuous changes keep on taking place, and yet steady conditions … Read more Homeostasis- Definition, Types, Examples, Applications
Centrifuge definition A centrifuge is a device used to separate components of a mixture on the basis of their size, density, the viscosity of the medium, and the rotor speed. The centrifuge is commonly used in laboratories for the separation of biological molecules from a crude extract. In a centrifuge, the sample is kept in … Read more Types of Centrifuge & Centrifugation (definition, principle, uses)
Neutrophils Definition Neutrophils are a type of white blood cell with multi-lobed nuclei and stainable cytoplasmic granules. These are the most abundant granulocytes, occupying about 40-60% of the total number of white blood cells in the blood. Neutrophils, like all other blood cells, are formed from the stem cells in the bone marrow. After differentiation … Read more Neutrophils – Definition, structure, count, range, functions
Definition of prokaryotic cells Prokaryotic cells are single-celled entities that are primitive in structure and function as they lack a membrane-bound nucleus and other organelles. The term “prokaryote” is derived from two Greek words, ‘pro’ meaning ‘before’ and ‘karyon’ meaning ‘nucleus’. Prokaryotes are considered to be the first living organisms of the earth as they … Read more Prokaryotic cells- characteristics, structure, division, examples
Image Credit: International Baccalaureate Organization. Core Topics (95 Hours) Topic 1. Cell biology (15 Hours) 1.1 Introduction to Cells 1.2 Ultrastructure of Cells 1.3 Membrane Structure 1.4 Membrane Transport 1.5 Origin of Cells 1.6 Cell Division Topic 2. Molecular biology (21 Hours) 2.1 Molecules to Metabolism 2.2 Water 2.3 Carbohydrates and Lipids 2.4 Proteins 2.5 … Read more International Baccalaureate (IB) Biology Syllabus (Core+Options)
Bio. 302 (Class 12 Biology Syllabus with practical and sample project works) Grade 12 – Botany (Theory) (64 teaching hours) Unit 1 – Plant Anatomy (8 teaching hours) 1.1 Plant anatomy: Concept of tissues, types of plant tissues (meristems and permanent tissues), Anatomy of dicot and monocot root, stem and leaf Secondary growth of dicot … Read more Class 12 Biology (Botany + Zoology) Syllabus 2020 (Nepal)