Questions • Name 4 general characteristics of protozoa. •...

Questions • Name 4 general characteristics of protozoa. • State the main difference between bacteria and protozoa on a structural level. • Can we say that all protozoa are parasites? Explain. • State the difference between cysts and trophozoites, mentioning the groups of protozoa that produce them. • Mention 5 important parasites, indicating their path to our body and their name of the diseases they cause. • Name 5 organs or parts of the body that can be affected by protozoa parasitic. • Name 2 ways to diagnose a parasitic disease. • Indicate which of the parasites studied has the simplest life cycle.

Transcript

00:01 Hi there, this question is regarding mainly microbes, the organisms which we can't see without microscope or with naked eye.

00:12 So first question asks for general characteristics of protozoa.

00:18 So protozoa word means proto means primitive, zoa means zoon or animals.

00:23 So these are single celled, they are made up of single cell or unicellular and they are eukaryotic cells, eukaryotic organisms that means they have well -defined nucleus and other cellular organelles and they can be found in different type of habitats.

00:48 They can be found in various habitats including soil, water and also inside other organisms because they are parasitic in nature, some of them are parasitic in nature.

01:09 So in bracket i can write parasitic and they perform different type of locomotion and they have locomotory organelles such as cilia, flagella and pseudopodia.

01:31 Protozoa can reproduce both sexually and asexually and parasitic ones have many hosts and they need different type of hosts to complete their life cycle.

01:45 Now let's move on to the next.

01:49 Here difference between bacteria and protozoa we have to give.

01:53 So bacteria are prokaryotic organisms and protozoa as mentioned before they are eukaryotic organisms.

02:15 So protozoa have well -defined nucleus and bacteria does not have so.

02:24 So this is the main difference.

02:25 Now let's move on to the next question which is regarding protozoa whether they are parasite or not.

02:35 So some protozoa are parasitic and some are not parasitic.

02:41 Some of the protozoa are parasitic.

02:55 They need host to complete their life cycle and as they are parasitic these are often easy spots in protozoa and such diseases are known as protozoan diseases such as malaria which is caused by plasmodium.

03:12 Okay and the host are both mosquitoes anaphylis mosquitoes and also human.

03:20 Next one next question differs between cyst and trophozoite.

03:25 So cyst and trophozoite.

03:36 So the cyst these are dormant forms and these cannot move that means they are not motile unable to move and they are environmentally resistant forms of protozoans.

03:58 Environmentally resistant.

04:00 Okay so i'm just writing env that means different type of environmental activities such as heavy rainfall, heavy high temperature and wind and humidity etc.

04:14 These cannot break the cyst or affect the anyway.

04:19 So they are environmentally resistant...

Question

Please give Ace some feedback