AQA • Biology

One of the most important aspects of cellular physiology is the delicate balance between autophagy and apoptosis, which orchestrates a harmonious interplay necessary for preserving cellular homeostasis and overall organismal health. The processes of autophagy, which is cellular recycling, and apoptosis, which is planned cell death, interact closely to control cell survival, preserve tissue integrity, and react to different stresses.

One of the fundamental ideas in biology that explains the diversity of life on Earth is the Theory of Evolution, which was mainly established by Charles Darwin. Natural Selection, the process by which species change over time based on the differential survival and reproduction of individuals with beneficial features, is the main tenet of this theory. This is a succinct overview:

A key idea in biology, evolution provides an explanation for the diversity of life on Earth. According to Charles Darwin's theory of evolution, which dates back to the 19th century, natural selection causes species to change over time. Below is a synopsis of the main ideas behind evolution:

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