First Learn Blog
This page will let you know our latest added and the updated pages to my website. Visiting this page will update you with what we have added recently.
Apr 18, 2023
Transpiration | Characteristics Features | Different Types | Factors
Definition of transpiration - Transpiration is the physiological activity in which water molecules carried from the root to the pores of the leaves present in the downward side of the leaf and evaporates from the plant body. Actually this is the process of evaporation of
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Apr 09, 2023
Water Movement Up a Plant | Absorption of Water by Roots
Transport of water and minerals- The transport of the substances from one part of the plant to another is called conduction. Roots absorbed water and minerals from the soil those are need to be transported to the different parts of the plants body.
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Apr 09, 2023
How do Plant Absorb Water? | Absorption of Water by Roots | Osmosis
As we all know that water is very essential elements for the plants because it acts as an essential raw material for the photosynthesis of plants for their growth and survival of plants need water to carry out many life processes, physiological processes
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Feb 13, 2023
Plant-Water Relations | Water potential|Osmosis|Plasmolysis|Imbibition
This is a physical phenomenon of net flow of solvent molecules from a solution of lower concentration to a solution of higher concentration through a semi permeable membrane (a membrane which allows only the solvent molecules and not the solute molecules
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Feb 13, 2023
Explain Long Distance Transport of Water | Transport in Plants | Xylem
Transport or conduction of the water means transport of substances from one part of plant to the another means transport of water and dissolved minerals from the roots to the leaves via xylem. Roots the underground parts of the plants which is positive geotrophic in nature.
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Dec 21, 2022
Means of Transport | Bulk Transport | Passive transport | Diffusion
There are different mechanisms for the transport like diffusion, Osmosis, active transport, facilitated diffusion etc. Mainly we can divide the entire transport process into two those are- active transport and passive transport. Passive transport includes diffusion osmosis
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Dec 17, 2022
Meiosis Cell Division | Biology | Importance for Meiosis | Cytokinesis
Meiosis is a complex cell division process in which the diploid number of chromosome of the mother cell is reduced to haploid number of chromosomes in the four daughter cell.
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Dec 16, 2022
Meiosis II | Location | Interkinesis II | Prophase II | Metaphase II
Meiosis is a complex type of cell division where a number of chromosome of the mother cell is reduced to the haploid number of chromosome in daughter cell.
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Nov 18, 2022
Meiosis I |Telophase I | Metaphases I | Definition of Leptotene
First meiotic division- Process of meiosis is start with the interphase like that of mitosis and DNA duplication takes place at the premeiotic “S” phase. The first meiotic division consists of prophase 1, pro metaphase1, metaphase 1, anaphase 1, telophase 1.
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Nov 17, 2022
Significance of Meiosis Cell Division | Evolution | Adaptation | Cell
Meiosis cell division is happened in two stage- first stage is called meiotic first division and second is called meiotic second division. First stage of division is also called reduction division and second part is same as mitosis division.
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Nov 08, 2022
Significance of Mitosis Cell Division | Hereditary Conservation
Places for mitosis- cell are divided by the process of mitosis in bacteria, protozoa, dinoflagellate, mammals. Beside the mammalian cell, other cell division of mitosis is quite different, as the nuclear membrane remain intact. But in mammalian cell the nuclear membrane
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Nov 08, 2022
Explain about M Phase | Definition and Types of Mitosis Process
The term mitosis was first coined by the scientist Flemming in 1882. The details were worked out by Strasburger in 1875 and Flemming in 1879. In 1960 Cocktail and Mac Canley explained the biochemical aspect of the process and initially the two process mitosis
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Oct 20, 2022
Explain about Interphase | Definition| Post mitotic Gap Phase |S-Phase
Interphase is a stage between two mitotic cycles in an eukaryotic cell, during which various physical and chemical changes for the preparation of cell division takes place.
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Aug 25, 2022
Phases of Cell Cycle | Definition | Interphase | M Phase | Mitosis
Definition of cell cycle- Cell cycle is a series of cyclical changes by which a cell passes during its growth and division. Generation time- The time interval between the two successive divisions are called generation time. Different division of cell cycle- Cell cycle
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Aug 23, 2022
Explain about Cell Cycle | Definition | Different Phases|Cell Division
Cell cycle is the entire sequence of events happening from the end of one nuclear division to the beginning of the next. In 1953 Howard and Pele denoted four phases of cell cycle G1, S, G2 and M phases.
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Aug 23, 2022
Explain about Cofactors | Definition, Types & Importance of Cofactors
Co factors are organic compound, metallic ions, metallic ion clusters that bind with enzymes and influence the enzyme activity. When the co factor is tightly bound to the enzyme ,this is called prosthetic group. If it is loosely bound it is called co factor.
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Aug 23, 2022
Classification and Nomenclature of Enzymes | Types of Enzymes |Diagram
classification and nomenclature of enzymes
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Aug 12, 2022
Factors Affecting Enzyme Activity |Substrate Concentration|Temperature
Though specific enzymes have specific substrate for their action. Their affinities for that particular substrate can be changed by different influencing factors . Factors that affect enzyme activity are – 1.Enzyme concentration- If the amount of substrate is more than the
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Aug 12, 2022
Nature of Enzyme Action | Chemical Reactions | Mechanism of Enzyme
In 1931 Michaelis Menton proposed that for catalization of enzyme reactions, the substrate (S) first binds with the enzyme (E) to form a very unstable enzyme substrate (ES) complex. The ES complex then immediately dissociates to liberate the enzyme the enzyme which remains
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Aug 04, 2022
How do Enzyme Bring about Such High Rates of Chemical Conversion?
Enzymes are biological catalysts that are produced from the cell and are associated with the conversion of the substrate to another components called products. Examples are- Reaction of enzymes- E (Enzymes)+ S (substrate)= ES complex= P (products)
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Aug 03, 2022
Explain Chemical Reaction | Definition | Types of Chemical Reaction
Chemical reactions are process where a set of chemical compounds converted to the new set of compound. In this process, the group of substances that involved in the reaction are called reactants and the new compounds that produces are called products. In chemical reactions
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Jul 25, 2022
Explain about Enzymes | Definition | Types & Characteristics of Enzyme
Enzymes are biological catalyst which speed up the reaction and it remain unchanged itself after the reaction by lowering the activation energy. History – In 1897 Kunhe described enzyme as – “biocatalyst are proteinaceous substances which are capable of cataloguing
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Jul 22, 2022
The Living State | Characteristics of Living State | Metabolism
Living beings are those which shows following characteristics – growth, development, reproduction, different physiological activities, adaptation, death, survival etc. Characteristics of living state are - Components of the body- Body of every living beings are made up of
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Jul 22, 2022
Polysaccharides | Definition, Types and Functions of Polysaccharides
Polysaccharides are huge carbohydrate molecules which is made up of multiple number of monosaccharide with the help of glycosidic bond. They can be branched or unbranched. Examples of polysaccharides glycogen, starch etc.
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Jul 22, 2022
Nucleic Acid | Definition | Types of Nucleic Acid | DNA | RNA|Diagrams
Definition of nucleic acid- It is a biomolecules present in almost all living beings, able replicate itself and is the major components of chromosome that carries genetic information. This are made up of carbon, hydrogen, oxygen, nitrogen and phosphorus.
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Jul 22, 2022
Explain about the Structure of Proteins | Definition | Components
Proteins are one of the major components of food , associated with cellular structure and different physiological activities . Components of protein- Proteins are made up of amino acids. Each amino acids contains carbon, hydrogen, oxygen, nitrogen. But sometimes other
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Jul 22, 2022
Nature of the Bond Linking Monomers in Polymers | Definition | Types
Definition of monomer- this are molecules of low molecular weight which are combined with same type of molecules or different types of molecules to form polymer due to formation of different types of bonds. Examples of monomers are glucose, fructose, nucleotides, amino acids
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Jul 22, 2022
Dynamic State of Body Constituents | Catabolic Process | Anabolism
Metabolism- This is the sum total of all the chemical reactions occur in living beings in an olderly fashion. Metabolism is made up of anabolism and catabolism. Anabolism- Anabolism is the sum total of those reaction which build up complex substances from simpler ones.
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Jul 22, 2022
Metabolic Basis for Living | Importance of Metabolism | Formation
Definition of metabolism- metabolism is the process by which chemical energy is required to maintain the life of living organisms. Importance of metabolism- Metabolism have three major functions. Such as- 1.Metabolism is associated with breakdown of food or fuel to
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Jun 25, 2022
Explain about Protein|Definition, Structure, Shape & Source of Protein
Large molecules of organic substances which 8s made up of hydrogen, carbon, oxygen, nitrogen and essential for the cellular structure, metabolism and development are called proteins.
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Jun 13, 2022
Biomacromolecules | Definition | Polysaccharides|Proteins|Amino Acids
Biomacromolecules are molecules that has molecular weight of more than 1000 Dalton and are found in the acid soluble pool of the chemical analysis of living tissue. These are large sized complex molecules which are of high molecular weight which are commonly formed
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May 29, 2022
Explain Primary and Secondary Metabolites | Definition|Functions|Types
The term metabolites mean the end product which is produced due to metabolism of different products. These are generally referred to as the small
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May 28, 2022
How to Analyse Chemical Composition? | Quantitative Analysis | X ray
Chemical composition of the substances can be determined according to the two types. One is qualitative and the other is quantitative. Qualitative analysis - This is a type of chemical analysis which is execute to identify the components of the mixture.
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May 28, 2022
Explain about Biomolecules | Definition | Macromolecules | Animal Cell
All molecules of the living organisms or chemicals of living organisms which are functional within them are known as biomolecules. It is associated with almost 1000 types of chemical reaction in animal cell. Different types of chemicals present in the cells are called
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May 23, 2022
Secondary Growth of Roots | Cork Cambium or Phellogen | Primary Xylem
Secondary growth is observed in vascular cambium and phellogen of dicot roots. It is seen that vascular cambium can be formed secondarily from conjunctive parenchyma and part of pericycle just lying opposite to the protoxylem points.
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May 22, 2022
Explain Microbodies | Definition | Glyoxisomes|Glycosome|Hydrogenosome
This in 1954 first was the first to observed microbodies. Microbodies are spherical or oval in shape with the diameter of 0.2 to 1.5 micrometer. It has outer covering with lipid and lipoprotein membrane. It contains different enzymes for catalase but do not contain any
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May 19, 2022
Centrosome and Centrioles | Distribution of the Centrosome | Structure
Definition of Centrosome - Centrosomeis a more or less spherical mass of dense cytoplasm situated close to the nucleus and contains a pair of cylindrical bodies which are concerned with spindle formation during cell division. In 1888 Boveri first discovered these organelles
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May 19, 2022
Explain about Nucleus | Nuclear Envelope | Nucleoplasm |Nuclear matrix
Robert Brown in 1831 first discovered a double membrane covered protoplasmic body that contains hereditary information. A cell usually contains a single nucleus (uninucleate, monokaryote).
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May 12, 2022
Cilia and Flagella | Definition | Location | Origin |Types of Flagella
Definition – Cilia and flagella are hair like micro tubular organelles projecting from the cell surface into the extra cellular medium and are concerned with cell motility.
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May 08, 2022
Cytoskeletal Structure | Functions and Types of Cytoskeleton Structure
Cytoskeletal structures are fibrous or fine tubular structures that consists of supportive structure of cell. The term cytoskeletal is coined by Koltzoff in 1928.
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Apr 06, 2022
Explain about Ribosomes | Distribution and Origin of Ribosomes
Ribosomes are small ,granular, non- membranous structure which is mafe up of RNA and protein and concerned with protein synthesis. In 1943 presence of ribosomes are first observed by Claude and later in 1955 Palade described a detailed description of it by define the name.
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Apr 01, 2022
Define the Plastids | Structure of Plastids | Types of Plastids
Plastids are semi-autonomous cell organelles which are surrounded by double membrane envelope, take part in storage and synthesis of organic compounds which occurred in some plant and protistans.Plastidome consists of all the whole plastids complex of cell.
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Mar 31, 2022
Explain about Mitochondria | Functions of Mitochondria | Distribution
The term mitochondria can be broken into mito and chondrion. The term “mito “ means fibril and” chondrion “means granule. Definition of mitochondria - The rod like filamentous, spherical or oval, double membrane bound cytoplasmic organelles of eukaryotic cells ,which are
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Mar 13, 2022
Endomembrane System | Endoplasmic Reticulum | Golgi Apparatus
Endoplasmic reticulum-It is discovered by Porter et al and Thompson in 1945. The name was given by Porter in 1953.It is a system of membrane lines channels found in all eukaryotic cells except mature erythrocytes.
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Mar 11, 2022
Cell Wall | Definition of Cell Wall |Middle Lamella|Primary, Secondary
Definition of cell wall- The thick and rigid , nonliving covering present just outside the plasma membrane of plant cells is called cell wall. It is discovered by Robert Hooke in 1665 while observing cell in the section of cork.
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Mar 10, 2022
Explain about Cell Membrane | Structure of the Cell Membrane
Definition - Cell membrane is the thin, elastic and semipermeable living membrane that surrounds the protoplasm of a cell is called cell membrane o plasma membrane or plasma lemma.
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Feb 24, 2022
Explanation of Eukaryotic Cell | Definition | Type of Cell Organelles
Definition of eukaryotic cell- It is a type of cell which contains well defined nucleus, membrane bound organelles. Examples of eukaryotic cell- Eukaryotic cells are present in all higher plants and animals.
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Feb 17, 2022
Cell Envelop and its Modification | Prokaryotic Cells | Explain |First
Cell envelope is generally made up of three things in case of prokaryotic cells. These three things are- 1. Glycocalyx-It is located as an external covering around the cell membrane of some animal cell which is made up of glycoproteins -type of mucopolysacharides
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Feb 16, 2022
Ribosomes and Inclusion Bodies | Definition | Stored Food | Pigments
Definition of ribosome- Ribosome is the organelles which is associated with protein synthesis. It is made up of two subunits. The larger one is spherical in shape and the smaller one is oval in shape. Ribosomes are attached with the endoplasmic reticulum and formed rough
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