What is the most basic building block of life?

The most basic building block of all organisms are cells.

Cells are most of the time microscopic units composed by organelles and other things. The cells have many functions in life, such as the one of an egg, or building tissues for example.

There are two cell divisions and two basic types of cells.

→The two main divisions are eukaryotic (have a nucleus, that encloses DNA) and prokaryotic (DNA floats through the cytoplasm, since there is no nucleus).

→The two basic cell types are the animal and plant cells that difere in shape, functions, organelles to give some examples. Animal cells are found in all animals including humans, and plant cells are found in plants and trees.

Hope it helped,

Happy homework/ study/ exam!

rocks and weathering-matching

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!