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Yes. Many of these parasites have more than one hosts. For example, Plasmodium is a protozoan that causes malaria, disease of the blood. Two hosts are involved in Plasmodium's life cycle--humans and a species of mosquitoes found in tropical areas. The disease spreads when a healthy mosquito bites a person with malaria, becomes infected, and then bites a healthy person. Symptoms of malaria include high fevers that alternate with severe chills. These symptoms can last for weeks, then disappear, only to reappear a few months later
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True or false protozoans that are parasites never have more than one host?
False. Many protozoan parasites can have more than one host during their life cycle. These hosts can include intermediate hosts, where the parasite develops, and definitive hosts, where it reproduces. Examples include the malaria-causing Plasmodium species, which involves both humans and mosquitoes in its life cycle.
Do parasites ever have more than one host?
FALSE!
What type of Protozoans feed on the cells?
Parasites. The fourth type of the protozoans are characterized more by the way the live than by the way they move. They are all parasites that feed on the cells and body fluids of their hosts. These protozoans move in a variety of ways. Some have Flagella, and some depend on hosts for transport. One even produces a layer of slime that allows it to slide from place to place! CREDITS TO: NORTH CAROLINA 8TH GRADE PRENTICE HALL SCIENCE EXPLORER
Are parasites usually smaller than the host?
Yes
Why does a predator kill its prey but a parasite rarely kill its host?
Usually, parasites are much smaller than the host is, whereas predators could be either small or larger than the prey. Parasites have a very high reproduction rate but the predators reproduce slowly.
Why would it be bad for the parasites if it killed the plant or animal it lives on?
Because it would deprive itself of its food-source. Parasites thrive by feeding off a 'host' - rather than catching their own food. If they kill off the host - they either have to find another host - or die !
Why would it be bad for the parasites if it killed the plants or animals it lives on?
Because it would deprive itself of its food-source. Parasites thrive by feeding off a 'host' - rather than catching their own food. If they kill off the host - they either have to find another host - or die !
Are lice symbiotic?
No, lice are considered parasites rather than symbiotic organisms. They feed on blood from their host and can cause irritation and discomfort.
Drugs that rid the body of eukaryotic parasites often have more side effects and are harder on the body than drugs that act on bacterial parasites Why?
Eukaryotic parasites are more similar to human cells than bacterial parasites, making it harder to target them specifically without affecting human cells. This can lead to more side effects from the drugs used to target eukaryotic parasites. Additionally, eukaryotic parasites are often larger and more complex than bacterial parasites, which can make it more challenging to develop drugs that selectively target them.
What single celled pathogen are more complex than bacteria and cause disease like malaria?
Protozoans
What are the differences between a virus and a parasite?
Viruses are infectious agents that require a host cell to replicate, while parasites are organisms that live in or on another organism and derive nutrients at the host's expense. Viruses are much smaller and simpler than parasites, and they replicate by hijacking the host cell's machinery. Parasites can be multicellular organisms like worms or single-celled organisms like protozoa.
How are viruses similar to parasites?
Viruses are similar to parasites because both require a host to survive and both destroy the cells in which they multiply (cause harm to the host).
