Definition Archives - Page 4 of 16 - CBSE Class Notes Online

Biology / Biology Concepts / Chapter 6 Life Processes - Class 10 / Class 10 / nutrition / Science Facts / Uncategorized

Chemosynthesis – Definition, Process, Equation, Chemosynthetic bacteria , types , examples

June 22, 2023June 23, 2023 - by Jaishree Gorane - Leave a Comment

Chemosynthesis is a process where chemosynthetic bacteria convert inorganic compounds into energy-rich organic compounds. It occurs in environments lacking sunlight. The equation for chemosynthesis is carbon dioxide + water + inorganic compounds → organic compounds + sulphur compounds. Chemosynthetic bacteria, like sulphur bacteria, iron bacteria, and nitrifying bacteria, are examples of organisms that carry out chemosynthesis. Chemosynthesis differs from photosynthesis in energy sources and reactions.

Chloroplast – Definition, Structure, Distribution, function and Diagram

June 1, 2023June 22, 2023 - by Jaishree Gorane - 1 Comment

Chloroplasts, found in plant cells, are defined as organelles that contain chlorophyll. They have a complex structure with outer and inner membranes, stroma, thylakoid membranes and grana. Functionally, chloroplasts play a key role in photosynthesis. They convert light energy into chemical energy, produce ATP and oxygen and fixing carbon dioxide. The diagrams illustrate the structure and functions of chloroplasts in plant metabolism.

Biology / Biology Concepts / Chapter 6 Life Processes - Class 10 / Class 10 / NEET Biology / Notes / nutrition / Science / Science Facts

Salivary Glands – Definition, Types, Location, Size, Ducts, Diagram, Characteristics, Secretion, Structure and Function

May 30, 2023June 2, 2023 - by Jaishree Gorane - Leave a Comment

Salivary glands are exocrine glands responsible for saliva secretion. They have acinar cells for saliva synthesis and ductal cells for transport. Myoepithelial cells aid saliva movement. Major glands include parotid (largest), submandibular, and sublingual (smallest). Ducts are Stensen’s (parotid), Wharton’s (submandibular), and multiple (sublingual). Saliva lubricates, digests, and protects. Understanding their structure and function is vital.

Biology / Biology Concepts / Chapter 6 Life Processes - Class 10 / Class 10 / NEET Biology / nutrition / Science Facts

Gastric Glands – Location , Structure, Types, Secretion and Functions

May 29, 2023May 29, 2023 - by Jaishree Gorane - 1 Comment

Gastric glands, present in the stomach lining, play an important role in digestion. Structurally, they are made up of different cell types, including parietal, chief, and mucous cells. These glands secrete gastric juice, which consists of hydrochloric acid, pepsinogen and mucus. The secretions help break down food, sterilisation of ingested pathogens and absorb essential nutrients, thus fulfilling important functions in the digestive process

Biology / Biology Concepts / Class 10 / Class 7 / NEET Biology / Notes / nutrition / Science Facts

Peristalsis- The Rhythmic Journey Through Your Body

May 18, 2023July 1, 2023 - by Jaishree Gorane - 2 Comments.

Peristalsis is a vital biological process that facilitates the movement of food through the digestive system. It involves rhythmic contractions of smooth muscles, creating a wave-like motion known as peristaltic waves. These waves propel food through the digestive tract and ensure efficient digestion and absorption of nutrients. Peristaltic movements are coordinated by the enteric nervous system and provide the motility necessary for proper gastrointestinal function.

Biology / Biology Concepts / Chapter 6 Life Processes - Class 10 / Class 10 / NEET Biology / Notes / nutrition / Science / Science Facts

Emulsification of Fats

May 15, 2023June 29, 2023 - by Jaishree Gorane - 4 Comments.

Emulsification of fats is an important process in digestion in which large globules of fat are broken down into smaller droplets. This process is carried out by bile, a substance produced by the liver and stored in the gallbladder. Bile emulsifies fats by acting as a detergent, breaking down the fat into smaller droplets that can be easily digested and absorbed by the body. Without this process, the digestion and absorption of fats would be much less efficient.

Biology Concepts / Class 9 / NEET Biology / Notes / Science / Science Facts / The Fundamental Unit Of Life -Chapter 5

Endocytosis and Exocytosis – Differences , Similarities ,Roles, Steps , Types

April 26, 2023October 6, 2023 - by Jaishree Gorane - Leave a Comment

Endocytosis and Exocytosis are cellular processes used to move molecules in and out of cells, respectively. Endocytosis involves the formation of a vesicle to engulf and transport molecules into the cell, while exocytosis involves the fusion of a vesicle with the plasma membrane to release molecules out of the cell. These processes play important roles in nutrient uptake, waste elimination, cell communication etc.

Amoeba Diagram for Class 7

April 23, 2023April 23, 2023 - by Jaishree Gorane - 1 Comment

The Amoeba is a single-celled organism of Protozoa phylum.It is a type of unicellular Protist that can be found in a variety of environments. The amoeba diagram is a simple and easy-to-draw representation of this organism, neatly labeled to help students in class 7 understand its structure. The essential features of the amoeba diagram comprise the pseudopod, cytoplasm, food vacuole, nucleus and other parts.

What is Endocytosis – Class 9

April 22, 2023October 6, 2023 - by Jaishree Gorane - 2 Comments.

Endocytosis allows cells to take in external materials by forming vesicles that fuse with the cell membrane. This process is vital for nutrient uptake and immune function. There are three steps and three types of Endocytosis. Phagocytosis engulfs particles, while Pinocytosis takes up fluids and solutes. Receptor-Mediated Endocytosis uses specific receptors to target and internalise molecules.

Biology Concepts / Class 9 / NEET Biology / Notes / Science Facts / The Fundamental Unit Of Life -Chapter 5

Endocytosis -Definition, Mechanism, Types, Examples

April 20, 2023April 26, 2023 - by Jaishree Gorane - 5 Comments.

Endocytosis is a cellular process by which cells absorb molecules and particles from the external environment by engulfing them within a vesicle. There are three main types of endocytosis – phagocytosis, pinocytosis, and receptor-mediated endocytosis. Endocytosis plays a crucial role in nutrient uptake, immune defence and cellular signalling. Examples of endocytosis include the uptake of bacteria by immune cells and the absorption of nutrients by intestinal cells.