Cellular Respiration

The organelle in which the Krebs cycle takes place is labeled
Check all that are true.

The process of glycolysis
1. requires oxygen
2. takes place in the inner-membrane of the mitochondria
3. breaks glucose into pyruvate
4. produces two molecules of ATP
5. takes place in the cytoplasm (cytosol)
6. only takes place in yeast and bacteria
A maximum of 38 molecules of ATP are produced from each glucose molecule as a result of
1. aerobic respiration
2. lactic acid fermentation
3. alcohol fermentation
4. glycolysis
The picture above depicts the fermenation of home made beer. The gas being produced in the container on the right is
1. carbon dioxide
2. oxygen
3. pyruvate
4. water vapor
5. nitrogen
The picture above depicts the fermenation of home made beer. One reason for the tube passing into the cup of water is to
1. provide water that is necessary for fermentation
2. keep oxygen from freely entering the fermentation flask
3. prevent the escape of carbon dioxide
4. water down the beer
5. nitrogen
The matrix, where the Krebs cycle takes place, is labeled number
The infoldings of the inner-membrane of the mitochondria have the purpose of
1. speeding the loss of carbon dioxide during fermentation
2. increasing surface area for ATP production
3. increasing the cell's photosynthetic capacity
4. speeding up the process of glycolysis
Aerobic respiration does not take place without oxygen available, because oxygen
1. is essential for the formation of carbon dioxide
2. is the terminal electron acceptor in respiration
3. is present in alcohol and lactic acid
4. is necessary for glycolysis
As an athlete's muscles are forced to work in the absence of enough oxygen, the muscle cells begin to produce
1. ever larger amounts of ATP
2. carbon dioxide
3. lactic acid
4. ethyl alcohol
Oxygen acts as the terminal elecron acceptor by combining with the electrons and ____________________ to form _____________________.
1. H⁺ ions // water
2. carbon // carbon dioxide
3. ADP // ATP
4. glucose // pyruvate
Check the statement(s) that is/are incorrect.
1. Glycolysis produces a net of 2 ATP molecules
2. The ATP produced in fermenation comes from glycolysis
3. The Krebs cycle produces a maximum of 2 ATP per molecule of pyruvate
4. Plant cells do not have the capacity to use glucose in cellular respiration, because they get their energy from photosynthesis.
The infoldings of the mitochondria are called
1. ribosomes
2. cristae
3. the matrix
4. the cytosol
Which of these represents the net equation for complete aerobic respiration?
1. glucose → carbon dioxide + ATP
2. glucose + oxygen → carbon dioxide + water + ATP
3. glucose → pyruvate + lactic acid + alcohol + ATP
4. pyruvate + oxygen → carbon dioxide + oxygen + ATP
In the absence of oxygen, the cell's ability to convert the stored energy of glucose to usable ATP
1. is greatly increased
2. is greatly decreased
3. is unchanged
4. is limited to a maximum of 38 ATP per glucose molecule
Obligate anaerobic bacteria require an oxygen-free environment in order to grow and reproduce. In which test tube of the obligate anaerobes growing?
1. Test tube 1
2. Test tube 2
3. Test tube 3
4. Test tube 4
5. Test tube 5
Yeast undergo fermentation in the production of bread. The alcohol is driven off in the baking process;
1. the oxygen causes the dough to rise
2. the carbon dioxide causes the dough to rise
3. the water vapor causes the dough to rise
4. the ATP causes the dough to rise
The cristae, where electron transport takes place, are labeled number