Quaestio : How do organisms obtain the energy stored in food?. Nunc Agenda: List what foods you have eaten today and the types of molecules that compose them. Energy. Energy : the ability to do work. Can you think of examples? In what forms does energy exist ?
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Quaestio: How do organisms obtain the energy stored in food?
List what foods you have eaten today and the types of molecules that compose them.
A Heterotroph’s nutrition must supply the organism with enough chemical energy to fuel its life’s activities.
In fireflys, Energy in the form of ATP combines with an enzyme to run a chemical reaction to produce flashes of lights
Ctenophores (Comb Jellies),like fireflies, have bioluminescence using the power of ATP.
: Nitrogenous Base
: 5-carbon sugar
Glucose contains a lot more energy than ATP, but is actually a smaller molecule. Glucose is a good way to store chemical energy, while ATP is more appropriate for directly supplying immediate energy for cellular reactions.
Glucose holds more energy than ATP
Can you explain the analogy?
Glucose is smaller but holds more energy, and needs to be broken down or exchanged before you can purchase with it. A suitcase full of money may be larger, like ATP, but can be used immediately.
Answer: Sodium lost an electron and became a positive ion. It now has more protons than electrons. Sodium was oxidized.
Answer: Chlorine gained an electron and became a negative ion. It now has more electrons than protons. Chlorine was reduced.
Remember Oil Rig!
Loss (of electrons)
Is Gain (of electrons)
Hydrogen Ion =
Hydrogen was Oxidized