Do Protists have a cell wall?

Hint: Protists are a diverse collection of organisms. Although there are exceptions, they are mostly microscopic and unicellular, or made up of a single cell. The Protist cells are highly organized and contain a nucleus and specialized cellular machinery known as organelles. A protist is a eukaryotic organism that is not an animal, a plant, or a fungus. Various protists may be closely related to animals, plants or fungi than to the others.

Complete answer:
Protists are unicellular and usually move by cilia, flagella or amoeba mechanisms. Usually, they do not have a cell wall, although some may have a cell wall. They have organelles that include a nucleus and may have chloroplasts, so some will be green and some will not. They are small, although many are large enough to be seen under a microscope or even a magnifying glass. Nutrients are acquired through photosynthesis, digestion by other organisms, or both.
Ernst Haeckel used the term protist. Traditionally, protists have been classified into one of several groups based on similarities with plants, animals or fungi: protozoa, plant-like protists (mainly algae), and the fungus-like slime molds and water molds. These traditional divisions, largely based on unscientific features, have been replaced by phylogenetic classifications.

Note:
Protists can be very different from one other. Some are very small and unicellular, like amoebas, and some are large and multicellular, like algae. However, the multicellular protists do not have any highly specialized tissues or organs. This simple organization at the cellular level helps distinguish protists from other eukaryotes, such as fungi, animals, and plants. Protozoa live in most environments containing liquid water.