Ch. 10-1: Cellular Respiration Flashcards
to study for Sem. II Bio final (20 cards)
Where do organisms get their energy?
food
Cellular Respiration is how food gets converted into
energy that can be used
unit that expresses energy stored in food
calorie
How is a calorie defined?
it’s the amount of energy you need to raise the temperature of 1 gram of water by 1°C
True or False: Cells can only use glucose and carbs for energy
If false, name some other molecules they can use
False
fats and proteins
Which has more energy: 1 gram of sugar or 1 gram of the fat in beef
the beef
define Cellular Respiration
the process of energy conversion where energy is released from food in oxygen’s presence
Summarize cellular respiration in an equation (symbols)
6O₂ + C₆H₁₂O₆ –> 6CO₂ + 6H₂O + Energy
Summarize cellular respiration in an equation (words)
Oxygen + Glucose –> Carbon Dioxide + Water + Energy
True or False: The entire equation of cellular respiration happens in one sudden step
False
Cells release energy in the form of…
ATP
Name the 3 stages of cellular respiration in order
Glycolysis, Krebs Cycle, Electron Transport Chain (ETC)
During glycolysis, _____% of the energy is captured to make ATP
10
the unused energy in glycolysis is in the chemical bonds of…
pyruvic acid / pyruvate
Most of the energy is captured in which stage of Cellular Respiration?
Electron Transport Chain
What does the stage that captures so much energy use to do that? Is it at the beginning or the end?
Oxygen; at the very end
When the cell’s demand for energy goes up, so does its…
use of oxygen
Why do we need to breathe oxygen?
The pathways in cells that release energy also use oxygen
process that requires oxygen
aerobic
