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الأميبا – Amoeba | معلومات كاملة

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   Amoeba — Full Species Profile Scientific Classification Kingdom: Protista Phylum: Amoebozoa Scientific Name: Amoeba proteus (common study species) Type: Single-celled organism Habitat (Where It Lives) Amoebas are commonly found in:  Freshwater ponds Still or slow-moving water Wet soil Decaying vegetation Inside other organisms (parasitic species) Amoebas prefer moist environments and are rarely found in saltwater. Description A shapeless organism with a constantly changing form Moves and feeds using pseudopodia (temporary “false feet”) Size ranges from 0.2–0.8 mm, visible under a microscope Soft, flexible body made of cytoplasm enclosed by a thin membrane Movement Amoebas move using: Pseudopodia (False Feet) They extend a part of their body forward and flow into it, pushing themselves ahead. Diet & Feeding Method Amoebas feed through: Phagocytosis (Cell Eating) Approaches food Forms pseudopodia around it Engulfs it into a food vacuole Digests it internally What The...

Methanogens — complete species profile

صورة
  Methanogens – Complete Species Profile Scientific Classification Domain: Archaea Kingdom: Euryarchaeota Group: Methanogens Common Name: Methane-producing archaea Type: Single-celled, prokaryotic microorganisms Overview Methanogens are microorganisms that produce methane gas (CH₄) as a by-product of their metabolism. They live in oxygen-free (anaerobic) environments and play a major role in the Earth’s carbon cycle. They are among the oldest life forms on Earth and are completely different from bacteria. Habitat (Where They Live) Methanogens thrive in environments with no oxygen, such as: Deep muddy swamps Wetlands and marshes Bottoms of lakes and ponds Inside the stomachs of cows, camels, sheep, and other ruminants Human intestines (in small numbers) Sewage treatment plants Hot springs Deep ocean hydrothermal vents Feeding Method Methanogens obtain energy by breaking down: Carbon dioxide (CO₂) Hydrogen gas (H₂) Acetate Methanol  Their metabolic process produces methane gas a...