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FCSDBio 3
Photosynthesis & Respiration
| Term | Definition |
|---|---|
| substance composed of only one type of atom | element |
| smallest unit of an element that has all the properties of that element | atom |
| two or more elements chemically combined | compound |
| smallest unit of a compound | molecule |
| C, H, O, N (carbon, hydrogen, oxygen, nitrogen) | most common elements |
| contain carbon AND hydrogen, larger | organic compounds |
| salts, minerals, gases, most acids & bases | inorganic compounds |
| all the chemical reactoins that occur within the cells of an organism | metabolism |
| a process of living things combining smaller units into larger ones while losing a molecule of water | dehydration synthesis |
| opposite of dehydration synthesis; splitting using water | hydrolysis |
| nucleic acids, carbohydrates, lipids, proteins | types of organic compounds |
| made from nucleotides; make RNA & DNA | nucleic acids |
| sugars & starches; made from simple sugars; supply energy; starch (plants), glycogen (humans), cellulose (plants) | carbohydrates |
| fats, oils, waxes; all made from fatty acids and glycerol; store energy | lipids |
| made from amino acids; make enzymes, receptor molecules, hormones, antibodies | proteins |
| way of obtaining the 4 basic organic compounds | nutrition |
| organisms that make food from inorganic compounds (ex. green plants, algae) | autotrophs |
| organisms that cannot make their own organic compounds so they must eat other organisms (ex. animals, bacteria) | heterotrophs |
| all life depends on this for energy | sun |
| equation of photosynthesis | 6 CO2 + 6 H2O + light = C6H12O6 + 6 O2 |
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