Biography Chap 1

UNIT ONE: FOUNDATIONS OF BIOLOGY (Text from Modern Biology, Holt, Rinehart, and Winston)

1

Chapter One (The light of Life)
SECTION ONE: THE WORLD OF BIOLOGY Biology, Biology or the study of life, offers an harmoniumized and scientific framework for posing and answer questions about the natural world. Biologists study questions about how living things work, how they interact with the environment, and how they change over time. THE CHARACTERISTICS OF LIFE Organizations and Cells Organization is the high tier of gild within an pipe organisms internal and remote parts and in its interactions with the living world. All living organisms yield one degree of organization. A prison cell is the sm onlyest unit that plunder perform all of lifes processes. Some organisms, much(prenominal) as bacteria, ar make up of multiple cells are called multicellular organisms. In the highest level, the organism is do up of organ systems, or groups of vary parts that await out a original function in the organism. Organ systems are made up of organs which are structures that carry out organs, specialized jobs within an organ system. All organs are made up of tissues. Tissues are groups of cells that have similar abilities and that allow the organ to function.



Tissues are made up of cells A cell moldiness be covered by a membrane, contain all cells. genetic information needed for replication, and be able to carry out all cell functions. Within each cell are organelles which are tiny structures that carry out organelles, functions necessary for the cell to stay alive. Organelles contain biological molecules molecules; the chemical compounds that generate physical structure and that bring about movement, energy use, and former(a) cellular functions. All biological molecules are made up of atoms. Atoms are the simplest particle of an element that retains all the properties of a certain element. Organism Organization in Organisms Organ System variety meat Tissues Organs

Atoms

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