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Protozoa

Protozoans are unicellular organisms found in many different habitats. They are eukaryotic and can be predators, herbivores or parasites, depending upon the species. The well-known disease malaria is caused by a protozoa.

1,445 Questions

Do protozoas have cells?

No, protozoans are a type of animal-like protists. Protozoans are consumers that can live in water, soil, or other organisms. While these organisms do not resemble animals, they are called animal-like because they are consumers and they share some characteristics with animals. Other types of protists are plantlike and fungus-like protists.

Is amoeba a haploid or a diploid?

The amoeboid cells are haploid. In the sexual phase of the life cycle, two amoeboid cells fuse to form a zygote. New amoeboid cells are produced by meiosis.

How does volvox react to its environment?

Volvox colonies were first recorded by Dutch microscopist Antonie van Leeuwenhoek in 1700 and are widely studied as a genetic model of morphogenesis (how organisms develop specialized cells and tissues). Volvox also exhibit differentiation between somatic (non-sex cells) and reproductive cells, a phenomenon considered by some biologists to be significant in tracing the evolution of higher animals from microorganisms.

Can trichomoniasis be passed to your children?

Trichomoniasis is not typically passed from mother to child during childbirth. However, in rare cases, it is possible for a pregnant woman to pass the infection to her baby during delivery, resulting in a condition called neonatal trichomoniasis.

What are the zoological importance of amoeba?

Amoebas play a crucial role in the ecosystem as they are important decomposers, breaking down organic matter and recycling nutrients. They are also a food source for many organisms, contributing to the food chain. Additionally, studying amoebas helps researchers understand cell biology and evolution.

Why is photosynthesis essential for the survival of the Euglena?

Photosynthesis is essential for Euglena's survival because it is the process by which Euglena produces food (glucose) using sunlight, water, and carbon dioxide. This food provides the energy needed for Euglena to carry out its life processes and functions. Without photosynthesis, Euglena would not be able to sustain itself and would eventually die.

What are protozoans that cannot move called?

Protozoans that cannot move are called sessile protozoans. These organisms are typically attached to a substrate and rely on external factors, such as water currents, to bring food to them.

How does a paramecium obtain nutrition?

A paramecium obtains nutrition through a process called phagocytosis, where it engulfs food particles along with water into its oral groove. The food particles are then enclosed in a food vacuole, where enzymes break them down for digestion. Waste materials are expelled through a structure called the anal pore.

Does water move into or out of the protozoa?

Water typically moves into protozoa by osmosis, as they are usually in a hypotonic environment. This helps maintain their internal water balance and prevents dehydration.

How are volvox and paramecium similar?

Volvox and paramecium are both types of microscopic organisms found in freshwater environments. They are both single-celled organisms that belong to the kingdom Protista and exhibit characteristics of eukaryotic cells. Both organisms are also capable of self-propulsion and feeding on organic matter.

What two types of amoeba-like protozoa don't look like amoebas?

The two types of amoeba-like protozoa that don't look like typical amoebas are radiolarians and foraminiferans. Radiolarians have intricate silica shells that give them a distinctive appearance, while foraminiferans have calcium carbonate shells with pores through which they extend pseudopods.

What are the difference between plasmodium vivax and trypanosoma gambience in terms of life cylce?

Plasmodium vivax is a protozoan parasite that causes malaria. Its life cycle involves both human and mosquito hosts. Trypanosoma gambiense is a protozoan parasite that causes African sleeping sickness. Its life cycle involves both human and tsetse fly hosts.

Why do chlamydomonas and euglena both have chloroplasts and flagella?

Chlamydomonas and euglena both have chloroplasts for photosynthesis to produce energy from sunlight. They both have flagella for movement, allowing them to swim and navigate their environments to find nutrients and light for photosynthesis.

What Dinobryon is a species of protozoa that reproduces asexually How can this asexual reproduction be harmful to the species?

Dinobryon is a colonial ciliate that reproduces asexually by binary fission, where the parent cell divides into two daughter cells. Over time, continuous asexual reproduction can lead to reduced genetic diversity within the population, making the species more susceptible to environmental changes and diseases. This lack of genetic variation can hinder the species' ability to adapt and evolve, ultimately affecting its long-term survival.

What does a lysosome do in the amoeba cell?

In an amoeba cell, lysosomes help in breaking down waste materials, old organelles, and engulfed food particles through a process called phagocytosis. They contain digestive enzymes that aid in the breakdown of these materials to be recycled or eliminated from the cell.

What sound does an amoeba make?

They make hollering and whooshing sounds, you just have to listen very closely.

What is the function of contractile vacuole in chlamydomonas?

The contractile vacuole in Chlamydomonas helps regulate water balance by periodically expelling excess water that enters the cell through osmosis. It prevents the cell from bursting due to the influx of water, maintaining cellular homeostasis.

Why are protozoan infections more difficult to treat than non drug resist bacterial infections?

Protozoan infections are hard to treat because the protozoan go through changing life cycle and locations in the body. They are also able to encapsulate themselves which walls them off from any medication

Is protozoa harmful or helpful?

Paramecium cilia are little hairs around its body that can make it move in different directions.

It is beneficial to the paramecium to get food (bacteria) and there are no harmful effects.

What is the smallest infections agent-virus-protozoa fungi or helminth?

No. The smallest infective particle is a protein called a prion.

Do amoeba have mitochondria?

Amoeba are eukariyotic cells.So they have mitochondria.

Which term most accurately describes the nutritional mode of healthy Paramecium bursaria?

Paramecium bursaria is a mixotroph, meaning it can photosynthesize like a plant by hosting green algae within its cells, while also feeding on organic matter like other heterotrophs. This combination allows it to derive energy from both sources, enhancing its nutritional versatility.

Is a Paramecium an open system?

Yes, a Paramecium is an open system because it interacts with its environment by exchanging energy and matter. It takes in nutrients and releases waste products to maintain its internal environment.

What is the ecological role of paramecium in canal water?

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.