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Microscopic world

Organisms and structures that need a different scale to be observed. Distinguish real samples, models and illustrations and explore related experiences.

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Magazine

Microscopic world

Documentary photograph: Freshwater Under the Microscope: Possible Inhabitants, Not an Inventory of a Drop

Documentary photograph Photo by WEI, WAN-CHEN（魏琬臻） Source: wikimedia_commons CC BY-SA 4.0 resized and converted to WebP

Explanation · 2 min

Freshwater Under the Microscope: Possible Inhabitants, Not an Inventory of a Drop

A drop of freshwater does not have a universal roster of inhabitants. Sources describe groups that live in lakes and rivers—from photosynthetic microorganisms to zooplankton—but do not document what a particular drop contains. They also explain why a microscopic image, or a software program’s label, is not always enough to identify a species.

Explanation · 3 min

What can distinguish a plant cell from an animal cell

The cell wall, chloroplasts, and large central vacuole are useful clues when comparing plant and animal cells, but they are not an infallible checklist for identifying every sample. Cell type, organism, and what the microscope can resolve all matter.

Explanation · 1 min

Cilia and Pseudopodia: Two Forms of Cell Movement on a Microscopic Scale

Cilia and pseudopodia offer two distinct examples of locomotion described in microscopic organisms: in ciliates, cilia beat rhythmically; in amoebas, pseudopodia and cytoplasmic flow contribute to movement. The available evidence here does not reliably explain the mechanism of flagella or support a complete comparison of all three.

Explanation · 2 min

Viruses and bacteria under the microscope: what we know about scale and how they are studied

Bacteria are larger than viruses, but that difference alone does not explain which method is appropriate. The sources describe viral structures, observation with electron microscopes, and techniques that detect genetic material in samples: different ways of obtaining information, not a universal rule based on size.

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Microscopic world and cellsZoom in on tiny organisms and explore cellular models.