A single organism produces genetically identical offspring. Bacteria, some worms, hydra, and some plants reproduce asexually.

The study of life and living things

The basic unit of structure and function of all living organisms.

The series of progressive changes an organism goes through as it matures from a single cell into a complex adult.

The tiny molecule inside living cells that holds the genetic instructions.

The process where the inherited traits of a population change over generations.

Special systems that help an organism respond to changes and keep things at safe levels (maintain homeostasis).

A reproductive cell or sex cell. In humans and other animals, male gametes are sperm and female gametes are egg cells.

The permanent increase in the size, mass, or number of cells in a living organism.

The maintenance of a stable internal environment, despite a changing external environment.

The sum total of the biochemical reactions occurring in an organism.

Organisms are composed of more than one cell. *Cells form tissues, and tissues form organs. *Organs work together to form organ systems.

Negative Feedback Loop

Keeps the body stable by reversing any changes that move conditions away from normal. Example: If you get too hot, you sweat to cool off. If you get too cold, you shiver to generate heat.

The new young organisms made by one or two parent living things through reproduction.

Positive Feedback Loops

Does not stabilize the body's conditions. Instead, it intensifies a response to achieve a specific outcome. Blood clotting:

The process of making the next generation of organisms. It may be a sexual or asexual process.

How a living thing reacts to a change or signal in its environment.

Gametes (sperm and egg) from two individual parents unite to create new genetically unique offspring. Most plants and animals reproduce sexually.

Anything that causes a living thing, body part, or system to react, change, or take action. Example: Temperature rising or blood sugar increasing.

Organisms are single-celled. Atoms make up the molecules that form the cell's structures.

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Unit 1

Characteristics of Life

Term	Definition
Asexual Reproduction	A single organism produces genetically identical offspring. Bacteria, some worms, hydra, and some plants reproduce asexually.
Biology	The study of life and living things
Cells	The basic unit of structure and function of all living organisms.
Development	The series of progressive changes an organism goes through as it matures from a single cell into a complex adult.
DNA	The tiny molecule inside living cells that holds the genetic instructions.
Evolution	The process where the inherited traits of a population change over generations.
Feedback Mechanism	Special systems that help an organism respond to changes and keep things at safe levels (maintain homeostasis).
Gamete	A reproductive cell or sex cell. In humans and other animals, male gametes are sperm and female gametes are egg cells.
Growth	The permanent increase in the size, mass, or number of cells in a living organism.
Homeostasis	The maintenance of a stable internal environment, despite a changing external environment.
Metabolism	The sum total of the biochemical reactions occurring in an organism.
Multicellular	Organisms are composed of more than one cell. Cells form tissues, and tissues form organs. Organs work together to form organ systems.
Negative Feedback Loop	Keeps the body stable by reversing any changes that move conditions away from normal. Example: If you get too hot, you sweat to cool off. If you get too cold, you shiver to generate heat.
Offspring	The new young organisms made by one or two parent living things through reproduction.
Positive Feedback Loops	Does not stabilize the body's conditions. Instead, it intensifies a response to achieve a specific outcome. Blood clotting:
Reproduction	The process of making the next generation of organisms. It may be a sexual or asexual process.
Response	How a living thing reacts to a change or signal in its environment.
Sexual Reproduction	Gametes (sperm and egg) from two individual parents unite to create new genetically unique offspring. Most plants and animals reproduce sexually.
Stimulus	Anything that causes a living thing, body part, or system to react, change, or take action. Example: Temperature rising or blood sugar increasing.
Unicellular	Organisms are single-celled. Atoms make up the molecules that form the cell's structures.

Created by: user-1736732

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