Answer:
a. Grow
b. Reproduce
c. Use energy
e. Produce waste
Step-by-step explanation:
A single-celled organism is an organism which has only one cell while a multicellular organism possess more than one cell that has differentiated into performing more specific roles. However, irrespective of the difference in number of cells between a single celled and multicellular organism, all cells must possess certain characteristics that prove that they are living.
Some of these characteristics include:
- Growth: All living cells including must undergo growth, characterized by the increase in height and width of the organism.
- Reproduction: All living cells are capable of replicating themselves to form new organisms. This is called reproduction.
- Use energy: Cells, whether single celled or multicellular, make use of energy derived by the process of cellular respiration to perform their cellular functions.
- Produce waste: All cells remove waste in a process called EXCRETION.
However, not all organisms are capable of getting their own food. This is a characteristics of autotrophic organisms, and it's not a function of whether an organism is single celled or multicellular.