- How do protists grow and develop?
- Are protists dangerous?
- What are bad protists?
- What do protists need to grow?
- What are the disadvantages of protists?
- What do protists eat?
- Where do all protists live?
- What is unique about protists?
- Why are protists so small?
- Is Protista still a kingdom?
- Do protists live in humans?
- How do protists live?
- Are protists living or nonliving?
- Where are most protists found?
- What are 4 characteristics of protists?
How do protists grow and develop?
Slime molds are an example of sexually reproducing protists.
They give off spores, which grow to the amoeboid form.
They are then fertilized and undergo mitosis to form the feeding plasmodium stage.
Finally, they mature and eventually give off spores of their own..
Are protists dangerous?
Some severe diseases of humans are caused by protists, primarily blood parasites. Malaria, trypanosomiasis (e.g., African sleeping sickness), leishmaniasis, toxoplasmosis, and amoebic dysentery are debilitating or fatal afflictions.
What are bad protists?
Usually, harmful protists are animal-like protists that act as parasites in humans. We looked at a number of examples, including protists that cause: Malaria. African sleeping sickness.
What do protists need to grow?
The cells of protists need to perform all of the functions that other cells do, such as grow and reproduce, maintain homeostasis, and obtain energy. They also need to obtain “food” to provide the energy to perform these functions. Recall that protists can be plant-like, fungi-like, or animal-like.
What are the disadvantages of protists?
The major negative about protists is that some cause diseases, both in humans and in other organisms. Examples are amoebic dysentery, meningo-encephalitis, malaria, toxoplasmosis, and African sleeping sickness.
What do protists eat?
Protists get food in one of three ways. They may ingest, absorb, or make their own organic molecules. 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.
Where do all protists live?
Habitats of Various Protists There are over 100,000 described living species of protists. Nearly all protists exist in some type of aquatic environment, including freshwater and marine environments, damp soil, and even snow. Paramecia are a common example of aquatic protists.
What is unique about protists?
Protists vary greatly in organization. While many protists are capable of motility, primarily by means of flagella, cilia, or pseudopodia, others may be nonmotile for most or part of the life cycle. …
Why are protists so small?
Protists are so small that they do not need any special organelles to take in gas or get rid of waste. They rely on simple diffusion, the movement of materials from an area of high concentration to an area of low concentration.
Is Protista still a kingdom?
In recent years, eukaryotes have been broken down into four kingdoms: animals, plants, fungi, and protists or protoctists. … We retain the word “protist” as a convenient term to mean “eukaryote that isn’t a plant, animal, or fungus.”
Do protists live in humans?
Why? Protists produce almost one-half of the oxygen on the planet through photosynthesis, decompose and recycle nutrients that humans need to live, and make up a huge part of the food chain. Humans use protists for many other reasons: Many protists are also commonly used in medical research.
How do protists live?
Protists make their homes in aquatic environments such as oceans, ponds, lakes and streams. Some attach themselves to rocks and reside on the bottom, while others float on the surface of the water, taking advantage of photosynthesis. Protists also live in aquariums and birdbaths.
Are protists living or nonliving?
Protists include the single-celled eukaryotes living in pond water ([Figure 1]), although protist species live in a variety of other aquatic and terrestrial environments, and occupy many different niches.
Where are most protists found?
Most protists can be found in moist and wet areas. They can also be found in tree trunks and other organisms.
What are 4 characteristics of protists?
Characteristics of ProtistsThey are eukaryotic, which means they have a nucleus.Most have mitochondria.They can be parasites.They all prefer aquatic or moist environments.