Biology Overview

Biology is the scientific study of life and living organisms
It encompasses the structure, function, growth, evolution, distribution, and taxonomy of all living things

Metabolism: chemical reactions that occur within cells
Homeostasis: maintenance of a stable internal environment
Photosynthesis: process by which plants convert light energy into chemical energy
Respiration: process by which cells generate energy from glucose
Mitosis: process of cell division
Meiosis: process of gamete formation
Evolution: change in species over time through genetic variation and natural selection

Carbohydrates: energy-rich molecules (e.g. sugars, starches)
Proteins: molecules that perform a wide range of functions (e.g. enzymes, hormones)
Nucleic acids: molecules that contain genetic information (e.g. DNA, RNA)
Lipids: molecules that provide energy and structure (e.g. fats, oils)
ATP: molecule that provides energy for cellular processes

Biology is the scientific study of life and living organisms
It encompasses the structure, function, growth, evolution, distribution, and taxonomy of all living things

Molecules are the basic building blocks of life, including DNA, proteins, and carbohydrates
Cells are the basic structural and functional unit of life
Tissues are groups of similar cells performing a specific function
Organs are structures composed of two or more types of tissues
Organ systems are groups of organs working together to perform a specific function
Organisms are individual living things
Populations are groups of organisms of the same species living in a specific area
Communities are groups of different species living in a specific area
Ecosystems are communities of organisms and their environment
The biosphere is all ecosystems on Earth

Metabolism involves chemical reactions that occur within cells
Homeostasis is the maintenance of a stable internal environment
Photosynthesis is the process by which plants convert light energy into chemical energy
Respiration is the process by which cells generate energy from glucose
Mitosis is the process of cell division
Meiosis is the process of gamete formation
Evolution is the change in species over time through genetic variation and natural selection

Carbohydrates are energy-rich molecules, including sugars and starches
Proteins are molecules that perform a wide range of functions, including enzymes and hormones
Nucleic acids are molecules that contain genetic information, including DNA and RNA
Lipids are molecules that provide energy and structure, including fats and oils
ATP is a molecule that provides energy for cellular processes