Cells intake substances from the outside world by encapsulating them in vesicles called endosomes, which are subsequently transported throughout the cell. During the transport process, vesicles fuse with other intracellular ...
Cell & Microbiology
Apr 8, 2024
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17
Human bodies make 2 million red blood cells per second. They each live for 120 days and spend that time zooming completely around the body every 20 seconds, carrying oxygen from the lungs to other tissues and bringing back ...
Cell & Microbiology
Mar 1, 2024
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1
In the ever-evolving realm of microscopy, recent years have witnessed remarkable strides in both hardware and algorithms, propelling our ability to explore the infinitesimal wonders of life. However, the journey towards three-dimensional ...
Optics & Photonics
Feb 14, 2024
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71
In multicellular organisms, cell migration and mechanosensing are essential for cellular development and maintenance. These processes rely on talin, the key focal adhesion—or FA—protein, central in connecting adjacent ...
Cell & Microbiology
Feb 2, 2024
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1
Tiny things matter—for instance, one amino acid can completely alter the architecture of the cell. Researchers at the Universities of Göttingen and Warwick investigated the structure and mechanics of the main component ...
Cell & Microbiology
Dec 22, 2023
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68
By giving living cells a "nano-poke" and monitoring the resulting changes in the intracellular environment, researchers have gotten their first glimpse of how whole cells respond to external mechanical pressure.
Bio & Medicine
Nov 21, 2023
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78
Actin filaments are dynamic protein-fibers in the cell built from single actin proteins. Many cellular functions, including cell movement, are regulated by constant filament assembly and disassembly. The disassembly phase ...
Cell & Microbiology
Sep 28, 2023
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33
Imagine a dark room packed full of furniture. Now imagine moving through it to get to the other side, using only your toe tips for guidance. While it may seem challenging (or unspeakably tedious) to us, this is a task that ...
Cell & Microbiology
Sep 13, 2023
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14
Bacteria live in nearly every habitat on Earth including within soil, water, acidic hot springs and even within our own guts.
Cell & Microbiology
Aug 22, 2023
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185
Cell division, or the process of how daughter cells emerge from a mother cell, is fundamental to biology. Every cell inherits the same protein and DNA building blocks that make up the cell it originally came from. Yet exactly ...
Cell & Microbiology
Jul 23, 2023
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105
The Actinopterygii /ˌæktɨnɒptəˈrɪdʒi.aɪ/ or ray-finned fishes constitute a class or sub-class of the bony fishes.
The ray-finned fishes are so called because they possess lepidotrichia or "fin rays", their fins being webs of skin supported by bony or horny spines ("rays"), as opposed to the fleshy, lobed fins that characterize the class Sarcopterygii which also, however, possess lepidotrichia. These actinopterygian fin rays attach directly to the proximal or basal skeletal elements, the radials, which represent the link or connection between these fins and the internal skeleton (e.g., pelvic and pectoral girdles).
In terms of numbers, actinopterygians are the dominant class of vertebrates, comprising nearly 96% of the 25,000 species of fish. They are ubiquitous throughout fresh water and marine environments from the deep sea to the highest mountain streams. Extant species can range in size from Paedocypris, at 8 millimetres (0.31 in), to the massive Ocean Sunfish, at 2,300 kilograms (5,100 lb), and the long-bodied Oarfish, to at least 11 metres (36 ft).
This text uses material from Wikipedia, licensed under CC BY-SA
