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7 ore fa · Eukaryotic cells contain membrane-bound organelles such as the nucleus, the endoplasmic reticulum, and the Golgi apparatus. Eukaryotes may be either unicellular or multicellular. In comparison, prokaryotes are typically unicellular. Unicellular eukaryotes are sometimes called protists.
4 giorni fa · Immune system. The immune system is a network of biological systems that protects an organism from diseases. It detects and responds to a wide variety of pathogens, from viruses to parasitic worms, as well as cancer cells and objects such as wood splinters, distinguishing them from the organism's own healthy tissue.
5 giorni fa · Cells cope with altered chromosome numbers by enhancing protein breakdown. When chromosomes are lost or gained, massive changes in gene expression disrupt the delicate balance of proteins in a ...
4 giorni fa · Mechanobiology—the field studying how cells produce, sense, and respond to mechanical forces—is pivotal in the analysis of how cells and tissues take shape in development and disease. As we venture into the future of this field, pioneers share their insights, shaping the trajectory of future research and applications.
3 giorni fa · Bacteria, microscopic single-celled organisms that inhabit virtually all environments on Earth, including the bodies of multicellular animals. Bacteria lack a membrane-bound nucleus and other internal structures. Learn about the features, types, and significance of bacteria.
4 giorni fa · Cellular biophysics. Electric cell death. Ann Xu & Hyun Youk. Nature Physics ( 2024) Cite this article. Metrics. A clear picture of how and why cells inevitably lose viability is still...
3 giorni fa · Regina Bailey. Updated on May 24, 2024. Prokaryotes are single-celled organisms that are the earliest and most primitive forms of life on Earth. As organized in the Three Domain System, prokaryotes include bacteria and archaeans. Some prokaryotes, such as cyanobacteria, are photosynthetic organisms capable of photosynthesis.
