Jan 12, 2026 · Biology is a branch of science that deals with living organisms and their vital processes. Biology encompasses diverse fields, including botany, conservation, ecology, evolution, genetics, …

Jan 12, 2026 · Although it is not known when the study of biology originated, early humans must have had some knowledge of the animals and plants around them. Human survival depended upon the …

3 days ago · The term science describes any system of knowledge that is concerned with the physical world and its phenomena and that entails unbiased observations and systematic experimentation. In …

Biology is the study of living things. A biologist is a scientist who studies biology. Biologists try to understand the natural world and the things that live in it. These…

Feb 15, 2026 · cell, in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, …

Feb 12, 2026 · cell, in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, …

Feb 6, 2026 · Evolution, theory in biology postulating that the various types of living things on Earth have their origin in other preexisting types and that the distinguishable differences are due to modifications …

Feb 6, 2026 · Osmosis, the spontaneous passage or diffusion of water or other solvents through a semipermeable membrane (one that blocks the passage of dissolved substances—i.e., solutes). The …

Jan 16, 2026 · In some animals, ovulation only follows coitus; this mechanism has been used to explain cases in which human pregnancy has apparently followed coitus early or late in the menstrual cycle, …

Feb 16, 2026 · Nucleus, in biology, a specialized structure occurring in most cells (except bacteria and blue-green algae) and separated from the rest of the cell by a double layer, the nuclear membrane.