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2012-08-16 15:46:55

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  1. Homeostatis
    balanced internal situation of a cell. It has achieved a balance of internal and external fluids based on temperature, acid/base balance, and the amount and type of critical sunstances
  2. enzymes
    subtances that start or speed up chemical reactions without themselves being changed.
  3. DNA (deoxyribonucleic acid)
    contains genetic and heredititary information. This allows cells to replicate.
  4. Chromosomes
    DNA makes up genes which are contained in chromosomes. Choromosomes control the traits that offspring will recieve parents.
  5. metabolism
    biological proesses necessary for life carried on by all living cells
  6. species
    the basic level of classification for all living things
  7. assimilation
    changing nutrients into protoplasm
  8. nutrition
    ingestion - digestion - assimilation
  9. respiration
    combination of processes that release energy from glucouse
  10. excretion
    in humans kidneys, lungs, and skin are involved in excretion.
  11. mitosis
    cell numbers are able to increase when cells divide, this is the cause of mitiosis.
  12. gametes
    gametes combine with each other to form the starting point for new organisms
  13. invertebraes
    90 percent of alife are animals without backbones
  14. atrium and ventricle
    two chambers of the heart that aid in circulating blood throughout the organisms body
  15. skeletal system
    carries the body and protects the organs
  16. muscular system
    enables the body to carry out 40% of body weight
  17. nervous system
    controls movement and provides communication between the individual and its environment
  18. endocrine system
    includes glands that regulate growth blood pressure and other functions
  19. respiratory system
    provides means to inhale air with oxygen  and exhale co2
  20. lymphatic system
    assits with bringing oxygen to cells and removing waste from them
  21. digestive systen
    processes and helps distribute nutrients
  22. excretory system
    removes waste from the body
  23. reproductive system
  24. viruses
    viruses are inorganic
  25. what are our bodies defense systems?
    lymph cells, white blood cells, and antibodies
  26. chromosomes in humans
    children form from a fertilized egg that has 23 pairs so 46 chromosomes. half from each parent
  27. mutation
     changes or disruption in the dna coding