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31 Cards in this Set
- Front
- Back
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True or False
all cells come from pre-existing cells |
True
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True or False
cells are the basic unit of life |
True
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True or False
Cells make up living organisms |
True
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all organisms are what?
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Unicellular or multicellular
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What is an organism?
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An individual animal, plant, or single celled life form
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What are organ systems?
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Systems that work together to keep the body functioning normally
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Ecosystems involve...
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interactions between communities and their environment
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Ecosystems include...
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People and plants
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What is an organism?
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Collection of tissues joined in structural unit to serve a common function
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What are tissues?
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Group of cells with both shared structure and function
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What are cells
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The basic structural unit of all organisms
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What is the major role of the skeletal system?
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To provide support for the body and protect delicate organs.
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What are some major organs of the skeletal system?
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Bones, cartilage,tendons and ligaments
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What is the major role of the muscular system?
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To provide movement and control the movement of materials through organs.
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What are some major organs in the muscular system?
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Skeletal and smooth muscles throughout the body
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What is the major role of the ciculatory system?
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To transport nutrients, gases, hormones and wastes through the body.
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What are some major organs in the circulatory system?
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Heart, blood vessels and blood
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What is the major role of the nervous system?
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To relay electrical signals through the body, also directs movement and controls physiological processes such as digestion
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What are some major organs of the nervous system?
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Brain,spinal cord and peripheral nerves
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What is the major role of the respiratory system?
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Provide gas exchange between blood and environment
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What are some major organs in the respiratory system?
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Nose, trachea and lungs
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What is the major role of the digestive system?
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To breakdown and absorb nutrients taht are necessary for growth and maintenance
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What are some major organs in the digestive system?
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Mouth, esophagus, stomach, small and large intestines
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What is DNA?
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Blueprint of life instructing cells how to develop and how to function, found in nucleus
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What is a gene?
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Sequence of DNA that determines a particular trait
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What is an allele?
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Another name for gene
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What is a dominant allele?
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more common gene or allele that powers a recessive and shows up in a population more often.
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What is a recessive allele?
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Weaker less common allele in a given pair
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What is offspring?
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result of a cross of two parents
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What is a gamete?
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Reproductive cells that contain one half of an individual's DNA
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What is heredity?
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The passage of genetic instructions from one generation to the next
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