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19 Cards in this Set
- Front
- Back
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What's an organism? |
An organism is a living entity made of cells that has the characteristics shared by all organisms |
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What are the characteristics shared by all living organisms? |
Reproduction, homeostasis, growth and development, response to environment, energy processing, structurally complex, and they have evolutionary adaptations. |
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What's the hierarchy of structural complexity? |
Atoms are organized by molecules, molecules make up organelles, organelles make up cells, cells organize tissues, tissues make organs, and organs made organ systems. |
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Definition of an organelle |
sub cellular component with a specific function and structure |
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Definition of a molecule |
more than two molecules held together by chemical bonds |
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Definition of an Atom |
smallest unit of an element, not divisible to smaller part |
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What are the three tenants of cell theory? |
cell is the smallest unit of life, all cells came from preexisting cells, and all organisms are made up of cells |
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What is homeostatis? |
maintaining a constant internal temperature even when the external environment varies |
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What is evolutionary adaptations? |
organisms becoming suited to their environment by acquiring adaptations through natural selection |
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How do you determine growth? |
cell size, cell numbers,and growth is irreversible |
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What is photosynthesis? |
converting solar light into chemical energy; carbon dioxide+water=sugars+oxygen |
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How do cells move during diffusion? |
high to low concentration |
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What's the relationship between cells and organisms? |
cells can be one part of an organism |
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Compare and Contrast Colonial, Unicellular, and Multi cellular |
unicellular- one cell organism working independntly Colonial- 2 or more cells working independantly living together Multicellular- group of specialized cells working together forming an organism; rely on each other |
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What's a population? |
a group of individuals of the same species living in an area |
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What are the parts of the endomembrane system? |
nuclear membrane, endoplasmic reticulum, Golgi apparatus(lysosomes, vacuoles, and plasma membrane) |
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Describe prokaryotic cells |
-have organelles that are not membrane bound -free floating organelles -cells are small, approx 1-10um -form unicellular or colonial organisms -DNA is circular and located in nucleoid region of the cell |
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Describe eukaryotic cells |
-membrane bound organelles -generally larger cells 10-100um -form unicellular, colonial, or multicellular organisms -linear DNA contained in nucleus -possess a cytoskeleton to change shape or carry out movement |
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Compare and Contrast prokaryotic and eukaryotic organisms |
figure it out yourself |
