Ключевые слова: alga, algae, anatomy, aquatic, bacteria, biology, body, cell, chlamydia, chlamydomonas, chlorophyll, chloroplast, chloroplasts, ciliate, cross section, cytoplasm, education, flagella, fresh water, genus, green, green algae, illustration, isolated on white background, laboratory, medical, membrane, micro, microbiology, microorganism, microscopic, microscopy, mitochondria, molecular, nature, nucleus, organelle, organism, paramecium, plant, protist, protozoa, rounded, science, single, species, structure, unicellular, vacuole, zoology,