review protists answers

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                        REVIEW: COMPARING PROTISTS

                          AMOEBA                        PARAMECIUM                     EUGLENA
 PLANT-LIKE OR    Animal – like                 Animal-like                     Plant-like
 DOES IT HAVE A   Yes                           Yes                             Yes


   METHOD OF      Pseudopod                     Cilia                           Flagella
 HETEROTROPH?     Heterotroph                   Heterotroph                     Heterotroph and
  AUTOTROPH?                                                                    Autotroph
                  Cell membrane – Outside covering of animal-like protists (holds cytoplasm and
  DEFINE THESE    organelles inside)
                  Contractile Vacuole – Squeezes excess water out of cell
  STRUCTURES      Psuedopodia – Finger-like extensions of the cytoplasm on the Amoeba

                  Cilia – hair-like projections on the outside of the Paramecium

                  Flagella – Tail found on the Euglena

                  Eyespot – Detects light

                  Chloroplasts – Helps plant-like protists complete photosynthesis

                  Endocytosis – The pseudopods extend and wrap around the food bringing it in to the
                  cell in a vacuole

                  Diffusion – Movement of molecules from high to low (i.e. all protists complete
                  respiration by using diffusion of oxygen in the water)

                  Osmosis – Movement of water from high to low (i.e. protists in fresh-water are
                  constantly bringing water inside cell, so they need a contractile vacuole to get rid of
                  excess water)

                  Eukaryote – Cell that contains a nucleus
                         Algae - another name for plant-like protists

                         Anal pore – Paramecium contain an anal pore to release wastes (i.e. they do not eat
                         where they excrete)

Draw or Write details about the disease Malaria (including the hosts, vectors, name of protist, places of
reproduction, where in the world this disease occurs frequently, etc.)

A mosquito, infected with the protist Plasmodium, bites a human. The mosquito injects her saliva into the
human, releasing the Plasmodium into the bloodstream. From here, the Plasmodium go into the Liver, where
they reproduce and burst out into the bloodstream. In the bloodstream, the Plasmodium hide from the white
blood cells by entering the red blood cells. This fools the body’s immune system, and the person becomes
increasingly sick with fever, chills, etc. The Plasmodium burst out of the red cells after reproducing inside of
If a mosquito bites an infected human, that mosquito will then bring in the Plasmodium into its body with the
blood meal. The Plasmodium reproduce in the salivary glands of the mosquito, which, if it bites another
human, continues the cycle of the disease Malaria. This disease occurs most commonly in Africa and warm,
wet climates.

Explain the steps of an Algal Bloom or Red Tide, including which organisms are involved, how it starts, and
what happens as a result of the algal bloom or red tide.

   1. Excess nutrients enter the water (fertilizers, waste, etc.)
   2. Algae growth increases
   3. Algae growth increases and covers the top of the water. This does not allow the sunlight to reach the
      bottom of the lake/pond. Plants and bottom dwelling organisms begin to die.
   4. This increases the number of decomposers. (increase then in the amount of oxygen needed in the
   5. Less oxygen available in the water, which leads to fish kills and other organisms dying.

Explain why Algae (both unicellular and multicellular) are important in our Ecosystems (list at least 3 ways).

   1. Part of the food chain
   2. Create a lot of oxygen for the atmosphere
   3. Used in many foods we eat as well as products we use (toothpaste, car polish, pudding, shampoos, etc)

Give me one reason fungi-like protists are similar to plant-like protists: Both have a cell wall

Give me one reason fungi-like protists are similar to animal-like protists: Both are Heterotrophs

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