Life Lines by Dr. Dolittle

Tag Archive for ‘cell’

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The gatekeepers of life: Exploring the complex role of GPCRs

Cell membranes are incredibly complex environments that play crucial roles in interacting with other cells, sensing specific molecules in the body, controlling what crosses the membrane, and other vital functions. The composition of these membranes varies between organs in an animal, between similar organs in different species, and even between individuals of the same species. Think of cell membranes as gatekeepers, responsible for detecting various chemical signals (such as ions […]

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Importance and dangers of oxygen for air-breathing animals

Although oxygen is essential for air-breathing species and allowed for the evolution of multicellular organisms, it is also a dangerous molecule that can lead to cellular toxicity through the generation of reactive oxygen species (ROS). However, it is important to point out that cellular ROS also play several physiological roles in the body. I just read an interesting review article published in Physiological Reviews that explored natural oxygen delivery and availability […]

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