This element is the backbone of all organic molecules.
What is carbon?
This molecule is the main energy currency of the cell.
What is ATP?
Matter in ecosystems is recycled, but this is not.
What is energy?
The main source of energy for almost all life on Earth.
What is the Sun?
This process uses sunlight to make glucose.
What is photosynthesis?
Carbon can form four bonds because it has this many valence electrons.
What is four?
Cellular respiration mainly takes place in this organelle.
What is the mitochondrion?
Plants get carbon for photosynthesis from this gas in the atmosphere.
What is carbon dioxide?
Organisms that make their own food are called these.
What are producers?
Plants store extra glucose as this molecule.
What is starch?
Glucose, starch, and cellulose belong to this type of macromolecule.
What are carbohydrates?
This process breaks down glucose to release energy.
What is cellular respiration?
This cycle moves water through evaporation, condensation, and precipitation.
What is the water cycle?
Only about this percentage of energy moves from one trophic level to the next.
What is 10%?
Animals get energy by doing this to food.
What is eating / consuming / cellular respiration?
This type of bond forms when atoms share electrons, common in organic molecules.
What is a covalent bond?
This makes its own food (plant)
What is an autotroph?
Decomposers are important because they do this to dead organisms.
What is recycle nutrients / break down matter?
A diagram that shows energy transfer between organisms is called this.
What is a food chain or food web?
This macromolecule includes enzymes and is important for cell structure.
What are proteins?
What is Nitrogen?
Nitrogen is the primary element missing in carbohydrates that is required for amino acid synthesis.
This stage of cellular respiration happens in the cytoplasm and does not need oxygen.
What is glycolysis?
This cycle involves nitrogen fixation, nitrification, and denitrification.
What is the nitrogen cycle?
Energy decreases at higher trophic levels mostly because it is lost as this.
What is heat?
This term describes how energy moves in one direction through an ecosystem.
What is energy flow?