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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
Where would you find protozoa in the animal body?
protozoa can enter the body by an insect bite. the symptoms are physical conditions, fever, illness, constant vomiting
How does volvox impact on humans?
When humans enter the volvox habitat in order to protects its spawn it releases reproductive material into the air which humans/animals inhale traveling to the lungs it begins to grow in the lungs using Co2 which is inhailed with the oxygen they then turn it into oxygen which causes Oxygen toxicity. There for if untreated leads to a painful death by over expansion of the lungs.
Properties of WBCs
Diapedesis:
WBCs can squeeze through the pores of blood vessels (even the
pore is much smaller than the cell size) by the process of
diapedesis.
Ameboid motion:
Once WBCs have entered the tissue spaces, they move through by
ameboid motion. They can move at least three times their own
length each minute.
Phagocytosis:
It's an essential process especially for the neutrophils and
monocytes. Selective structures can be ingested then digested via
this process. Phagocytes have proteolytic enzymes, lipases and
other agents (killer system) that kill the foreign materials.
Chemotaxis:
Different chemical substances can attract WBCs and make it move
toward the site of the chemicals. It depends on the concentration
gradient of these secreted substances.
http://faculty.ksu.edu.sa/73905/Documents/Paper.abstract/Circulation.pdf
Does an euglena have eye spot?
Euglena also have an eyespot at the anterior end that detects light, it can be seen near the reservoir. This helps the euglena find bright areas to gather sunlight to make their food. The color of the eyespot is red.
Why is a contractile vacuole important to paramecium?
Water is constantly coming down it's concentrations gradient and osmotically entering the paramecium's cell. The cell would soon burst if there were not a way to offload much of this water, so contractile vacuoles do this job for the paramecium.
If certain types of amoeba get into to your blood stream that's preeeety bad, like ( Naegleria fowleri) That can get sucked up your nose by swimming in freshwater with algae blooms and eat your brain matter, in which you die in 2 weeks because it's so fatal.
How are bacterial endospores and cysts of protozoa similar?
Bacterial endospores and cysts of protozoa are similar in that they are both dormant, protective structures that enable survival in harsh conditions. They provide resistance to adverse environmental conditions such as heat, lack of nutrients, and desiccation. Both structures allow the organism to remain viable until more favorable conditions return for growth and reproduction.
What is the primary way that the amoeba is different than the sun flower?
There are several differences in the structure of a sunflower versus an amoeba.
A few are the following:
- Kingdoms: sunflower = plant; amoeba = Protista
- Cell membranes: sunflower = cell wall; amoeba = semipermeable membrane only
- organelles: sunflower = cholorplasts; amoeba = pseudopod
- Cell organization: sunflower = differentiated multicellular: amoeba = single cell
- Habitat: sunflower = confined to land areas; amoeba = confined to water
Are diatoms protozoa or algae?
Flagellates are of 2 types , Zooflagellates are Protozoa like while Phytoflagellates are Algae like .
Amoeba possess a contractile vacuole for excretion and osmoregulation . Undigested food is excreted by exocytosis . Some wastes wastes, and CO2 are excreted through the plasma membrane by diffusion .
WHAT TOOL DO YOU USE TO OBSERVE TO MOVEMENTS OF A paramecium?
light mircoscope. you little study island fiend.
Amoebas primarily feed on bacteria, algae, and other small particles found in their environment. They engulf their food using pseudopods, which are extensions of their cell membrane that surround and engulf the food particles.
What does the eyespot do for euglena?
The photoreceptive eyespot allows the organism to orient and swim toward light, whichh is helpful for photosysnthesis. Interesting side note: in Euglena, theree is a dark pigment patch just underneath the eyespot. This means that Euglena is detetcing darkness and swimming away from the dark and thereefore inot the light. Without this pigment patch, the eyespot could not function because the cell body is essentially transparent. I'm not sure if this is the same for Chlamydomonas, but I would expetc so.
(From: www.gadgetking.com/trends/eyespot+euglena)
How do euglena get there food?
All euglena have chloroplasts and can make their own food by photosynthesis. They are not completely autotrophic though, euglena can also absorb food from their environment; euglena usually live in quiet ponds or puddles.
What are the euglena paramecia and amoeba all made of?
Protists. If you want even more detail they are Protozoa.
What the amoeba is a member of this kingdom?
Amoebas are single celled but they can also sometimes be multi-cellular organisms when they have to be (they're a bit weird). It's possible that animals (including us) evolved by various different single celled organisms working synergetically. http://www.sciencedaily.com/releases/2008/11/081124203654.htm
What protozoan parasite causes dysentery?
The protozoan parasite that causes dysentery is Entamoeba histolytica. It is transmitted through contaminated food and water, leading to symptoms such as bloody diarrhea, abdominal pain, and fever. Prompt treatment with appropriate medication is essential to prevent complications.
