Biology Test5 Flashcards
What cell pert breaks down sugar and releases energy?
Mitochondria
What is needed for respiration to take place?
Sugar and oxygen
What are the products for cellular respiration?
CO2, H2O, energy
How are fermentation and respiration alike?
Both can be used by cells to release energy from sugar.
When is fermentation used by muscle cells?
When oxygen is in short supply.
What causes bread to rise and creates little bubbles of gas in bread?
Carbon dioxide released by yeast breaks down sugar in the dough by the process of fermentation.
In what organelle does photosynthesis take place?
Chloroplast
What process do humans use to get most of our energy?
Respiration
Does respiration release more or less energy than fermentation?
More
What happens during the Krebs cycle?
Pyruvic acid is broken down into carbon dioxide in a series of reactants.
Why is ATP needed to begin glycolysis?
It takes energy to get the sugar ready to split.
What type of fermentation do yeast cells use?
Alcoholic fermentation
What type of fermentation do you use when oxygen is in short supply?
Lactic aid fermentation
Which of the three stages of cellular respiration releases the most energy?
The electron transport chain
Why is oxygen used as the end “puller” in the electron transport chain?
Because it is the best electron puller.
