how far can sound go on for
There is no limit to how far sound can go, as long as there is a matter-containing "medium" for it to pass through. It just gets weaker as it goes farther from the source. It cannot leave the atmosphere, because there is no matter beyond it.
waht is cell ? how is it place in human body ? n use of it?
A cell is the basic building block of all living organisms. It is the smallest unit of life that can perform all the necessary functions for an organism to survive and reproduce. Cells have a variety of structures and functions, but they are generally surrounded by a cell membrane, which separates them from their environment.
In the human body, cells are organized into tissues, organs, and organ systems. There are many different types of cells in the human body, each with its own specialized function. For example, red blood cells carry oxygen, nerve cells transmit electrical signals, and muscle cells contract to produce movement.
Cells perform various functions in the human body, including:
1. Providing structure and support: Cells form the structural framework of tissues and organs, helping to maintain their shape and integrity.
2. Carrying out biochemical reactions: Cells carry out metabolic processes, such as breaking down nutrients to release energy or synthesizing proteins and other molecules essential for life.
3. Reproducing and growing: Cells can divide and replicate to create new cells, allowing the body to grow and repair damaged tissues.
4. Communicating with other cells: Cells can send and receive chemical signals to coordinate activities and maintain homeostasis, the internal balance of the body.
5. Protecting the body: Certain cells, such as immune cells, help defend the body against pathogens and foreign invaders.
Overall, cells are fundamental to the functioning and survival of the human body. They work together in complex systems to maintain the body's health and ensure its proper functioning.