Singhaashalata108

Biomolecules are organic molecules essential for life, including carbohydrates, proteins, lipids, and nucleic acids. Carbohydrates – Made of C, H, O, they provide energy (e.g., glucose, starch, glycogen). Proteins – Composed of amino acids, they function in enzymes, hormones, and structure (e.g., hemoglobin, insulin). Lipids – Non-polar molecules that store energy and form cell membranes (e.g., fats, phospholipids). Nucleic Acids – DNA & RNA, responsible for genetic informati...

Frogs are amphibians with a compact, tailless body, adapted for jumping and swimming. Their moist skin aids in respiration, and they have large eyes, external nostrils, and a tympanic membrane for hearing. Forelimbs are short for support, while hindlimbs are long and webbed for movement. Internally, frogs have a cartilaginous-bony skeleton, a three-chambered heart, and a closed circulatory system. They respire through lungs, skin, and mouth lining. The digestive system includes a wide mouth, ...