What is enzyme and characteristics?
Enzymes are biological catalysts that facilitate chemical reactions in living organisms. They are typically proteins, although some RNA molecules also have catalytic activity. Enzymes are essential for life because they speed up the reactions that are necessary for cells to function properly. Without enzymes, many biochemical reactions in the body would occur too slowly to support life. Enzymes work by lowering the activation energy required for a chemical reaction to occur. Activation energy is the amount of energy needed to start a reaction, and enzymes reduce this energy barrier, allowing the reaction to occur more quickly. Enzymes do this by binding to specific molecules, called substrates, and positioning them in…
Why Earthworms Are a Gardener’s Best Friend
Earthworms are considered a gardener’s best friend for several reasons: Soil aeration: Earthworms burrow through the soil, creating tunnels and air pockets that allow air, water, and nutrients to penetrate the soil more easily. This improves soil aeration, which is important for plant root health. Soil structure: Earthworms also help to improve soil structure by breaking down organic matter and creating channels for water to flow through. This creates a more hospitable environment for plant roots to grow. Nutrient cycling: As earthworms eat their way through the soil, they break down organic matter and release nutrients that plants can use. They also excrete castings (worm poop) that are rich in…
Koala Has Human Like Fingerprints!
The discovery that koalas have human-like fingerprints was a surprising revelation that has captured the attention of the scientific community and the general public alike. In this essay, I will explain this discovery in detail, including the methods used by researchers to uncover this fact and the potential implications of this discovery for the field of biology and beyond. The discovery that koalas have unique fingerprints that resemble human fingerprints was made in 2016 by a team of researchers from the University of Adelaide in Australia. The researchers were studying koala genetics in an effort to find ways to protect the species from disease and habitat loss. As part of…
Plasma membrane
Delimiting membrane or boundary of all cells providing the characteristic shape to the cell. Structure ● Composed of approx. 7 nm thick phospholipid bilayer with hydrophilic heads facing outward from both sides into aqueous environment and hydrophobic tails facing inside the bilayer. ● A symmetrical the presence of proteins, floating in the bilayer imparts a fluid mosaic pattern which comprises of (a) Integral/Intrinsic proteins spanning through the lipid bilayer, protruding both extracellular and cytoplasmic sides of membrane. (b) Peripheral/Extrinsic proteins located on outside either extracellular or cytoplasmic surface. (c) Lipid anchored proteins covalently linked to a lipid molecule of bilayer but present outside to it. ● Some oligosaccharides are covalently…
Defences Against Diseases
The body has three main lines of defence against disease. These involve mechanical barriers, chemical barriers and cells. Mechanical barriers Although many bacteria live on the surface of the skin, the outer layer of the epidermis seems to act as a barrier that stops them getting into the body. But if the skin is cut or damaged, the bacteria may get into the deeper tissues and cause infection. Hairs in the nose help to filter out bacteria that are breathed in. However, if the air is breathed in through the mouth, this defence is by-passed. Chemical barriers The acid conditions in the stomach destroy most of the bacteria that may…
True Or False On Carbohydrates
Types of Classification System
Biological classification is the scientific procedure of arranging organisms into groups on the basis of their similarities and dissimilarities and placing the groups in a hierarchy of categories like species, genus, family, etc
The living world and Taxonomy Flashcards
Ecosystem – Structure and Function
https://youtu.be/RlWj__29Uew The term ‘ecosystem’ was proposed by a British ecologist A.G. Tansley (1953). It represents the basic fundamental, functional unit of ecology which comprises of the biotic community together with its abiotic (non-living) environment. Ecosystem is the functional unit of nature where living organisms interact with each other and with their environment. Ecosystems can be recognized as self-regulating and self-sustaining units of landscapes that may be terrestrial or aquatic. Forests, grasslands and deserts are examples of terrestrial ecosystems. The aquatic ecosystems can be either freshwater (ponds, lakes, streams) or saltwater (marine estuaries) type. Ecosystem may be natural (forest, sea) if developed under natural conditions or artificial (garden, aquarium, agriculture) if…
