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A series of free Science Lessons for 7th Grade and 8th Grade, KS3 and Checkpoint Science in preparation for GCSE and IGCSE Science.

The Protoctista Kingdom - Protists
Protists (protoctists) are microscopic single-celled organisms. Some protists, such as Amoeba, have features like an animal cell. Others, such as Chlorella, have chloroplasts and are more like plants.

Some protoctists are pathogens. For example, Plasmodiumis, the pathogen that causes malaria.

Learn about single-celled organisms that carry out the basic functions of life.

Explores the history of eukaryotes while examining the diversity that exists in kingdom Protista reflected in organisms such as Euglena which have both animal and plant-like qualities. Looks at animal-like zooflagellates, sarcodines, ciliates, and sporozoans; fungus-like slime molds, and plant-like dinoflagellates, diatoms, and englenoids. Multicellular red, brown and green algae are examined and why modern biology places all three in kingdom Protista rather than kingdom Plantae explained.

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
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