Protists

Diatoms are stramenophila algae, their cell wall is composed of silica and their chloroplasts are yellowish-brown. Desmids are green algae, their cell wall is composed of cellulose and pectins (like plants), and their chloroplasts are green.

The seven diatomic elements are:

Hydrogen

Nitrogen

Oxygen

Fluorine

Chlorine

Iodine

Bromine

They are nonmetals.

Yes, many species of amoeba have a contractile vacuole that helps regulate water content within the cell by expelling excess water to prevent bursting due to osmotic pressure.

Blepharisma is a unicellular organism. It belongs to the group of ciliate protozoans and has a single cell that carries out all necessary functions for its survival.

No, zooplankton are not protists. Zooplankton are a diverse group of small animals that drift in aquatic environments, while protists are eukaryotic microorganisms that can be both single-celled or multicellular, but are not classified as animals.

diatoms are free living.

they are also called "floating pastures of the sea".

they are one of the only organisms which are autotrophs.

In some protists, food is digested in specialized structures called food vacuoles. These vacuoles contain enzymes that break down the ingested food into smaller molecules that can be absorbed by the cell for energy. Once digestion is complete, the remaining waste is expelled from the cell.

Yes, all halogens are diatomic molecules in their elemental form, meaning that they exist as pairs of atoms bonded together. Examples of halogens include fluorine (F2), chlorine (Cl2), bromine (Br2), iodine (I2), and astatine (At2).

Yes. They are one-celled algae with two flagella.

Amoeba are eukariyotic cells.So they have mitochondria.

Paramecium in canal water serve as a food source for larger organisms like fish and invertebrates. They also help regulate the population of bacteria and algae through grazing, contributing to the overall balance of the aquatic ecosystem.

These protists share many characteristivd with Fungi. However, because of their differences from Fungi they are classified as protists. Funguslike protists play a valuable role in the ecosystem. They break down dead plant and animal matter, making the nutrients from these dead orgainsms available for living organisms. While some slime molds and water molds are benefical, many others can be very harmful. Many fuguslike protsts attack and consume living plants.

The typical lifespan of phytoplankton is 1 - 5 days. This is largely dependent on water temperature, light, and nutrients. More recently water pollution has been a factor decreasing their lifespan.

Diatomic molecules are two atoms of the same element that are bound together in their natural state. They are: hydrogen (H2), nitrogen (N2), oxygen (O2), and the halides, or halogens, in the next-to-last column of the period table, flourine (F2), chlorine (Cl2), bromine (Br2), iodine (I2), and astatine (At2).

Amoebas move by using structures called pseudopods, which are temporary protrusions of their cell membrane that form in the direction they want to move. They extend and contract these pseudopods to push themselves forward in a process known as amoeboid movement.

No, amoebas capture food by surrounding it with their cell membrane and forming a food vacuole. Cilia are small, hair-like structures that are used for movement and sometimes for feeding in other microorganisms.

Protists are different from any other organisms found in the animal or bacteria kingdom. For this reason, they are seen as heterotrophic or autotrophic by biologists and botanists.

active transport, the water is pushed out through contractile vacuoles against its natural flow. Osmosis states that water flows from a higher concentration to a lower concentration, but the paramecium has less water and water is still being pushed out.

Amoeba demonstrates locomotion by crawling and changing shape using pseudopods, while Elodea does not demonstrate locomotion as it is a stationary aquatic plant.

Neon does not occur as a diatomic molecule. Its atoms exist as single atoms due to their stability and lack of a need to form covalent bonds with another atom to achieve a full valence electron shell.

yes and no. they are pathogenic because they harm and they arent pathogenic because they dont always harm and instead sometimes provide benefit to the host

Some examples of Bacillariophyta, commonly known as diatoms, include Navicula, Cyclotella, and Thalassiosira. These microscopic algae are characterized by their glass-like silica cell walls and diverse shapes, making them important primary producers in aquatic ecosystems.

Protists can have both positive and negative effects on the animal they live in. Some protists can form mutualistic relationships with animals, providing benefits like aiding in digestion or protecting against pathogens. However, other protists can be parasitic and harm the animal by causing infections or diseases.

Diatoms and foraminifera are types of protists that produce tests, which are hard outer coverings that protect the organism.

Protists are a paraphyletic group because animals, fungi, and plants are the crown groups evolved from different lineages of the protists. They aren't included in the same group as protists taxonomically. This explains why the cladists consider the protist a paraphyletic group.