How do the structure of protists differ from bacteria?
Unlike bacteria, protists have specialized organelles, including a true nucleus confined by a nuclear membrane. This compartmentalization differentiates protists from bacteria. These photosynthetic protists, such as blue-green algae, contain chloroplasts, too. We can further classify protists based on their functions.
What cell type do protists and bacteria have?
In contrast to prokaryotic cells, eukaryotic cells are highly organized. Bacteria and archaea are prokaryotes, while all other living organisms — protists, plants, animals and fungi — are eukaryotes. Many diverse organisms including algae, amoebas, ciliates (such as paramecium) fit the general moniker of protist.
What is the cell structure of protist?
Protist cells may contain a single nucleus or many nuclei; they range in size from microscopic to thousands of meters in area. Protists may have animal-like cell membranes, plant-like cell walls, or may be covered by a pellicle.
What do protists and bacteria have in common?
Both are cells containing a membrane, cytoplasm, DNA, RNA, ribosomes, proteins, a means of producing ATP (probably from glucose), a method of internal transport, and a method of reproduction (interestingly, protists retain the ability to reproduce asexually, like bacteria, although many can also reproduce sexually via …
Is a protist a bacteria?
A protist is a one- or many-celled organism that lives in moist or wet surroundings. Unlike bacteria, protists’ cells are eukaryotic. These organisms have a membrane-bound nucleus and other membrane-bound structures in their cytoplasm.
Why may bacteria be smaller than protists?
Bacteria can’t shrink more than they have already because there wouldn’t be enough space left for DNA and necessary proteins. They can’t get much bigger, because larger species have much greater energy demands in proportion to their increased girth.
What are 5 characteristics of protists?
Characteristics of Protists
- They are eukaryotic, which means they have a nucleus.
- Most have mitochondria.
- They can be parasites.
- They all prefer aquatic or moist environments.
Do protist cells have Golgi bodies?
Protists are single-celled organisms belonging to the kingdom Protista. Other organelles found in the cell are Golgi bodies and endoplasmic reticulum.
What is a protist vs bacteria?
What is a protist? A protist is a one- or many-celled organism that lives in moist or wet surroundings. Unlike bacteria, protists’ cells are eukaryotic. These organisms have a membrane-bound nucleus and other membrane-bound structures in their cytoplasm.
Do protists eat bacteria?
Protist Nutrition Ingestive protists ingest, or engulf, bacteria and other small particles. They extend their cell wall and cell membrane around the food item, forming a food vacuole.
What are the functions of protists?
Algae, which is made of protists, plays an important role in maintaining the planet’s oxygen levels. Certain protists, like seaweed, can be used as a food source in dishes like sushi, and are very high in nutrients like iodine. Protists help control bacterial populations in the human intestines.
What is the cell number of Protista?
Protists include many different types of organisms, such as algae, kelp, and paramecium. No one knows how many species there are in total, though estimates range between 65,000 to 200,000. All protists are eukaryotes (cells with a nucleus) and have organelles like mitochondria and chloroplasts.
What are the parts of a protist?
The cells of protists have a nucleus and are highly organized with specialized cells parts called organelles. Protists are classified, along with plants, animals, and fungi, as eukaryotes. There are many diverse organisms which are considered to be protists including algae, amoebas, and ciliates such as paramecium.