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You are reading an older version of this FlexBook® textbook: CK-12 Life Science Concepts For Middle School Go to the latest version.

1.8: Characteristics of Life

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

asexual reproduction

asexual reproduction

Process of forming a new individual from a single cell or individual.
cell

cell

Basic unit of structure and function of a living organism; the basic unit of life.
DNA

DNA

Deoxyribonucleic acid; nucleic acid that is the genetic material of all organisms.
energy

energy

Ability to do work.
homeostasis

homeostasis

Ability to keep a stable internal environment; ability of the body to maintain a stable internal environment despite a changing environment.
nucleus

nucleus

Membrane enclosed organelle in eukaryotic cells that contains the DNA; primary distinguishing feature between a eukaryotic and prokaryotic cell; the information center, containing instructions for making all the proteins in a cell, as well as how much of each one to make.
organism

organism

Living thing.
photosynthesis

photosynthesis

Process by which specific organisms (including all plants) use the sun's energy to make their own food from carbon dioxide and water; process that converts the energy of the sun, or solar energy, into carbohydrates, a type of chemical energy.
protein

protein

Organic compound composed of amino acids and includes enzymes, antibodies, and muscle fibers.
reproduce

reproduce

Reproduction; process of forming a new individual.
sexual reproduction

sexual reproduction

Process of forming a new individual from two parents.

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Description

Difficulty Level:

At Grade

Grades:

7 , 8

Date Created:

Nov 29, 2012

Last Modified:

Aug 16, 2015
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