b. carry out photosynthesis
c. exchange gases with the atmosphere
d carry out cellular respiration
In order from smallest to largest :
Atom, base subunit, nucleotide, gene, chromosome, nucleus, cell.
A cell is the structural and basic unit of life. The study of cells from their basic structure to the functions of each cell organelle is called cell biology. Robert Hooke was the first biologist who discovered cells.
All organisms are made up of cells. They can consist of one cell (unicellular) or many cells (multicellular). Mycoplasmas are the smallest known cells. Cells are the building blocks of all living things. They give structure to the body and transform nutrients from food into energy.
Cells are complex and their components perform different functions in the body. They come in different shapes and sizes, like the bricks of buildings. Our body is made up of cells of different shapes and sizes.
To learn more about cell, refer;
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