Protists

Diatoms are a type of phytoplankton with a distinctive cell structure made of silica, giving them a glass-like appearance. They come in various shapes, from circular to elongated, and can form intricate patterns and designs. Under a microscope, diatoms appear as colorful, geometric shapes with intricate detailing.

Animal-Like Protists

* Once referred to as protozoa, the animal-like protists are alike in that they do not get their nutrients by performing photosynthesis, but instead get them from consuming either other organisms or bits of organic matter. They digest this material internally and have evolved various means of moving toward their prey. The so-called ciliate protists move through use of hair-like cilia surrounding their bodies; amoeboid protists move by means of extending pseudopodia or "false feet." Many amoeboid protists are parasites, and some of them are human parasites that live in the digestive system.

Plant-Like Protists

* Protists that get their nutrition by performing photosynthesis are known as algae. Some algal species provide examples of colonial multicellularity, defined as a form of life in which individual cells form stable associations with one another but do not take on specialized roles. Other algal protists provide examples of true multicellularity: a form of life in which individual cells exist in stable groups, with different cells specializing in different functions.

Fungus-Like Protists

* Some protists get their nutrients by extending slender filaments to a food source, after which they digest that food source externally, in the way fungi do. Protists in this category include the oomycetes, one group of which is known as the water molds. Many oomycetes are saprobes, meaning organisms that obtain their nutrition from dead organic matter. These organisms are thus "decomposers" that help recycle organic matter.

They do not have a cell wall. They have a cell membrane, which is the outer layer of the cell. Much like skin in a human. The only type of cells that have a cell wall are plant cells. :)

Diatoms grow by taking in nutrients from their environment, such as carbon dioxide, silicate, and nitrates, to build their silica-based cell walls. Through a process called cell division, diatoms replicate their cells by splitting in half, producing two identical daughter cells. This rapid reproduction allows diatoms to form dense populations in aquatic environments.

A paramecium grows by increasing the size of its cell through a process called binary fission, where it replicates its DNA and divides into two identical daughter cells. It also grows by consuming food and absorbing nutrients from its environment through its oral groove.

Parmamecium has a definite shape and slides through water while Amoeba is a single celled organism that has no definite shape and consisting of a mass of protoplasm containing one or more nuclei surrounded by a flexible out membrane.

Parmamecium has a definite shape and slides through water while Amoeba is a single celled organism that has no definite shape and consisting of a mass of protoplasm containing one or more nuclei surrounded by a flexible out membrane.

Diatoms are the major primary producer in the globe. They produce oxygen more than the all the world tropical forests put together. Whatever the oxygen taken inside by us are atleast 1/4 of its from diatoms. Recently freshwater diatoms are also used as bioindicators, to detect the pollution.

Amoeba proteus, the common amoeba, is currently classified in Kingdom Amoebozoa. Older sources may list amoebae under the now-defunct Kingdom Protista or (in really old books) Kingdom Animalia. The change is because of the current trend to define taxonomic groups on evolutionary kinship.

An amoeba gets nutrients through the process of endocytosis, which is absorbing another organism into itself. This is done with a pseudopod, which is a temporary appendage used for absorbing another organism.

Amoebas feed by engulfing food particles through a process called phagocytosis. They extend their pseudopods around the food particle, forming a food vacuole that contains the particle. Digestive enzymes are then secreted into the food vacuole to break down the food for absorption.

Diatoms and dinoflagellates are primary producers in marine ecosystems, playing a critical role in the food web by providing food for various organisms such as zooplankton, shellfish, and small fish. Their depletion could disrupt the entire marine ecosystem, leading to cascading effects on higher trophic levels. Additionally, these organisms are involved in the production of oxygen and carbon sequestration, affecting the global biogeochemical cycles.

Amoeba are protozoans. They eat algae and other protozoans. Protozoans are eaten by zooplankton in the marine environment.

yahoo answers is usually where i always go for first choice. but for background information use buzzle or ask.com it usually helps. Yes i know this the paramecium is a difficult topic.. but thats ok.

Amoeba obtain its food by the process of endocytosis. It is due to the flexibility of cell membrane as it enables the cell to engulf food and other materials from its external environment. There are four ways in which an amoeba can ingest solid food:

1. Circumvalletion-when the prey is active and motile, e.g. Any smaller protist

2. Circumfluence- when the particle is sessile e.g. Unicellular algae

3. Import- then particle comes into contact with the amoeba and then sinks into it just like in quicksand.

4. Invagination- the amoeba does'nt use it's pseudopodia here, instead it pinches off a portion of it membrane to form a tube like structure which, along with the particle makes a food vacuole.

No, they don't live in soup, dribble or anything like that. It might strike you with awe that amoebae live in homes they build themselves. They can have shapes like a globe, cigar-shape, cube and so on, and none is bigger than a full-stop - all without a brain.

They may be brainless, but you cannot call an amoeba 'simple'.

A paramecium is not autotrophic. A paramecium is heterotrophic. The paramecium are single-celled organisms that are found in marine environments and stagnant ponds.

Amoebas move by extending their cell membrane out in the direction they want to go, forming temporary protrusions called pseudopods. They then flow their cytoplasm into the pseudopods, allowing them to move in a process known as amoeboid movement.

Not to us. They are very small fossilized particles that to our skin feels like talcum powder. To smaller creatures, they are sharp as glass. Diatomaceous earth is a product sold at most garden centers. These fossilized particles are used to keep smaller pests like ants and slugs from the stalks of plants. These small diatoms poke into the segmented parts of ants and the soft skin of slugs and snails, becoming an annoyance, and they leave.

All protists belong to the taxonomic domain of Eukarya, members of which are characterised by having cells with nuclei. Eukarya covers all organisms in the Kingdom Protista, as well as the Kingdoms Plantae, Fungi and Animalia.

Any type of skeleton requires multiple cells to harden and support the animal. An amoeba is an invertebrate and a one-celled creature that barely has a cell wall. It surrounds its food with its body and then digests it. It has neither endo- or exoskeleton.

Simple diffusion has limitations in organisms like amoebas because it is reliant on the concentration gradient and does not require energy input, limiting the movement of substances against a gradient or in areas of low concentration. Amoebas may not efficiently absorb necessary nutrients or expel waste in areas of low concentration due to the passive nature of simple diffusion, which affects their overall metabolic processes and growth.

one example of protist autotroph is euglana plasamamembran diagram with a energy corce one example of protist autotroph is euglana plasamamembran diagram with a energy corce A Bromeliad is another one!!

All green plants are autotrophs, using sunlight to convert carbon dioxide and water into sugars by photosynthesis.

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Paramecium are commonly used in scientific research as model organisms to study cell structure, physiology, and behavior. They are also used in ecological studies to indicate water quality and in educational settings as a model organism for teaching basic biological concepts. Additionally, some cultures consume paramecium as a food source, although this is less common.