Objective lenses collect the light passing through the specimen and focus the light beam to form a magnified image. Objective lenses are the primary optical lenses for specimen visualization on a microscope. Objective lenses collect the light passing through the specimen and focus the light beam to form a magnified image. The objective lenses are … Read more
40 – 1000X Typically, a compound microscope is used for viewing samples at high magnification (40 – 1000x), which is achieved by the combined effect of two sets of lenses: the ocular lens (in the eyepiece) and the objective lenses (close to the sample). How to calculate the magnification power? To obtain the total magnification power, multiply the magnification … Read more
A compound microscope consists of more than one optical lens to generate magnified images than a simple microscope. A compound microscope is the most common type of light (optical) microscopes. The term “compound” refers to the microscope having more than one lens. Basically, compound microscopes generate magnified images through an aligned pair of the objective … Read more
A microscope is an instrument used to see objects that are too small to be seen by the naked eye. A microscope is an instrument used to see objects that are too small to be seen by the naked eye. Microscopes are commonly used in science laboratories and classrooms to visualize all kinds of tiny … Read more
250-750 µm Amoeba proteus is a large protozoan, and it can grow up to 1 mm long (average size 250-750 µm). The size ranges based on the amount of food it engulfs. It can almost be seen with the naked eye (still very difficult due to its colorless and transparent body). Extended read: Facts about Amoeba … Read more
Amoeba can reproduce both sexually and asexually Most of the time, Amoeba proteus reproduces asexually by splitting one cell into two cells, a process called “Binary Fission”. Just before it reproduces, Amoeba proteus retracts most of its pseudopods and rounds up into a ball. After replicating its genetic material (DNA) in the nucleus, the original nucleus of the Amoeba … Read more
Amoebae use pseudopods to engulf food particles, a process called Phagocytosis Amoeba proteus engulfs its prey by a process called “phagocytosis”. As the amoeba moves towards its prey, its pseudopods reach out, surround, and engulf the food inside the cell membrane of Amoeba proteus by forming a food vacuole. Then the digestive enzymes are released into the vacuole … Read more
through extension and retraction of “false feet” or pseudopods Amoeba proteus is known for the way they move, a primitive crawling manner – through extension and retraction of “false feet” (or pseudopods) over varied substrates. Amoeba proteus does not have a fixed shape – it constantly changes because it extends its pseudopods. A pseudopod is a temporary arm-like projection that … Read more
A group of primitive protists that move by pseudopods Amoeba (plural amoebas/amoebae) is a group of primitive protists. Among the big family of Amoebas, Amoeba proteus is probably the best-known member – common in classrooms and research laboratories. Amoeba proteus is known for the way they move, a primitive crawling manner – through extension and retraction of “false … Read more
Cytoplasmic streaming promotes the movement of the fluid substance within a cell Cytoplasmic streaming, also called Protoplasmic Streaming or Cyclosis, plays an important role in cell processes because it promotes the movement of the fluid substance (cytoplasm) within a cell. Cytoplasmic streaming is important in plant cells and large single-celled animal cells because passive diffusion is not adequate … Read more