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Characteristics of life

Natalia Zuluaga

16/08/2019

Universal genetic code

Written in the DNA molecule. Information all organisms need to grow and reproduce, passed from parents to offspring. Determines the growth, form and structure of organisms.

Universal genetic code

Growth and development

Growth and development

Every organism has a pattern of growth and development. During development, a single fertilized egg divides again and again, these cells differentiate as they divide, and begin to look different from one another and perform different functions.

Reproduction

All organisms produce new similar organisms. Most plants and animals engage in sexual reproduction, in which cells from two parents unite to form the first cell of a new organism. Other organisms reproduce through asexual reproduction, in which a single organism produces offspring identical to itself.

Evolution

Evolution

Groups of organisms evolve over generations or change over time. Evolutionary change links all forms of life to a common origin more than 3.5 billion years ago.

Evidence of this is found in all aspects of living and fossil organisms, from physical features to structures of proteins to sequences of information in DNA.

Homeostasis

All organisms need to maintain their internal environment relatively stable, even when external conditions change dramatically.

Homeostasis

Obtain and use material and energy

Obtain and use material and energy

All organisms must take in materials and energy to grow, develop, and reproduce. Metabolism is the combination of chemical reactions through which an organism builds up or breaks down materials.

Respond to the environment

Organisms detect and respond to stimuli from their environment.

Respond to the environment

Cells

Cells

Organisms are composed of one or more cells, the smallest units considered fully alive. Cells can grow, respond to their surroundings, and reproduce. Despite their small size, cells are complex and highly organized.

Can be observed, measured, and tested through a microscope.

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