Their single-celled "bodies" are able to carry out all the processes of life such as metabolism and respiration without help from other cells.
(Their single-celled "bodies; are; able to carry out all the processes of life such as metabolism and respiration without help from other cells) (Their single-celled "bodies; to carry out; all the processes of life such as metabolism and respiration without help from other cells)
Their single-celled "bodies Their single-celled "bodies
are to carry out
able to carry out all the processes of life such as metabolism and respiration without help from other cells
all the processes of life such as metabolism and respiration without help from other cells