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Biology

Cell Basics

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Cell Basics Living VS. Non-Living Complex organisms, such as humans, require many systems for their life processes. Less complex living things may lack the complex systems of more complex organisms, but they still carry on the basic life activities. While non-living things may carry on some of these life processes, they do not carry on all of them, or these activities do not … [Read more...] about Cell Basics

Immune System and Disease

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Immune System and Disease Vocabulary: immune response, pathogens, immunity, immune system, antigen, pathogen, white blood cells, antibodies, memory, allergies, auto-immune disease, AIDS, Human Genome ProjectDisease Homeostasis in an organism is constantly threatened. Failure to respond effectively can result in disease or death. Disease is a disturbance of homeostasis or … [Read more...] about Immune System and Disease

Photosynthesis

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Photosynthesis Biochemical Processes Almost all life on Earth ultimately depends upon the Sun for its energy. The process of photosynthesis converts the Sun's energy to sugars which living things may use as an energy source. These sugars are converted to a form living things can use by a process called respiration. Thousands of chemical reactions occur in living things. … [Read more...] about Photosynthesis

Cell Division

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Cell Division Asexual Reproduction Species are maintained in existence through the life spans process of reproduction. Asexual reproduction produces genetically identical offspring from a single parent cell. The process of mitosis is associated with asexual reproduction and the growth and repair of cells in sexually reproducing organisms. Reproduction and development are … [Read more...] about Cell Division

Ecosystems Communities

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Ecosystems/Communities Vocabulary: limiting factors, ecological succession, symbiotic, parasitism, mutualism, commensalism, pioneer species, climax community Abiotic Factors Abiotic factors are those non-living physical and chemical factors which affect the ability of organisms to survive and reproduce.Some Abiotic Factorslight intensity temperature range … [Read more...] about Ecosystems Communities