How do single cell obtain their nutrition?
Answers
Explanation:
Many unicellular organisms live in bodies of water and must move around to find food. ... Plant-like protists, and some types of bacteria, can make their own food through photosynthesis. Other micro-organisms, such as fungi and bacteria, interact with one another to obtain nutrients
Explanation:
They absorb them from their environment. Many such nutrients either permeate across the cell membrane, or are actively transported by molecular membrane transporters.
Some single celled organisms can enclose a large source of nutrients (like a prey cell) in a membrane bound vacuole and “eat” it in a process known as phagocytosis. The prey item is then digested in the vacoule and the digested contents absorbed across the membrane as above.
Some single celled organisms are autotrophic. Via either photosynthesis or chemosynthesis, they obtain energy from the environment and manufacture all the nutrients they need from simple inorganic molecules, which they obtain by diffusion or active transport across their cell membranes.
However, phagocytosis, diffusion and active transport across cell membranes is also how the intestinal cells of animals (and the hyphae of fungi) absorb the nutrients liberated from food after digestion.
So, ultimately, single celled organisms get their nutrition in the same ways as multi-celled organisms