More often, fungi exist as branching multicellular threads called hyphae. The cell membranes which separate the cells are often not present and so a single hypha can contain many nuclei. Hyphae are enclosed by a cell wall which is completely different to the cell wall found in plant cells. It is made mainly of glucans, mannans and chitin. You can tell fungi apart from bacteria because endoplasmic reticulum and mitochondria can be seen in the cytoplasm of the hyphae.
Chromosomes also become visible when the nuclei divide.
Protista Protista are an odd group. So, if they are not multicellular animals or plants, they are not fungi but they are definitely eukaryotic, they are protoctists. Protoctists cells are weird and wonderful. Some of them, like amoeba, look like typical animals cells, they just exist as single-celled organisms. It has chloroplasts and can photosynthesise, but can also chase and eat small prey.