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27 Cards in this Set

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  • Back
What is an organism?
A living thing composed of one or more cells.
Unicellular
An organism composed of one cell, can carry on all the activities necessary for life
Multicellular
An organism composed of many cells.
What type of organism exhibits a division of labor?
Multicellular - different cells do different jobs.
What type of organization is found in multicellular organisms?
Cell
Tissue
Organ
Organ System
Organism
What is a cell?
The smallest unit of organisms that carry on the functions of life.
What is Metabolism?
The total of all cell activities.
What feature of life allows organisms to to continue to exist even though they are not immortal?
Reproduction
What is a stimulus?
Anything an organism responds to.
What is a Response?
The reaction to a stimulus?
Define Adaptation?
Any characteristic/trait that makes an organism better able to survive in its environment.
Define Homeostasis?
The regulation of an organism's internal environment.
Define growth?
Increase in size
Define Development?
Changes that occur during growth
Define life span?
The length of time an organism is expected to live.
Define Absorption.
Taking materials in through the cell membrane.
Define Circulation.
Transport of molecules through an organism.
Define Excretion.
Removal of wastes.
Define Digestion.
the breakdown of food into nutrients an organism needs.
Define Respiration.
Exchange of oxygen and carbon dioxide. The release of energy from food using oxygen.
What do plants need to carry on photosynthesis?
water, carbon dioxide, sunlight
What do plants produce during Photosynthesis?
Sugar and Oxygen
What is needed for respiration?
Sugar and Oxygen
What is produced from respiration?
Water, Carbon Dioxide, and ATP energy
What are the 4 basic needs of an organism?
1. Energy
2. Water
3. Oxygen
4. Minerals
What is spontaneous generation?
The theory that living things are created from nonliving mattter.
(living from nonliving)
What is Biogenesis?
The theory that lifeforms produce other lifeforms. (life from life)