Download GLYCOLYSIS and respiration review worksheet

Name
Date
Period_____
WORKSHEET REVIEW: Anaerobic and Aerobic Glycolysis
Answer in complete sentences.
Glycolysis, the breakdown of carbon-containing molecules, is common to all organisms and occurs in the cytoplasm of all
cells. It may occur in the presence or absence of oxygen and yields a small amount of energy in the form of ATP.
1. What is the difference between aerobic and anaerobic glycolysis pathways for making ATP?
2. What is the equation for the overall process of aerobic respiration?
3. What happens to the glucose in glycolysis?
4. If four ATP are produced for each molecule of glucose, why do we say that the yield is only 2?
5. What is the chemical role of the NAD+ (and hence NADH) molecules?
6. What normally happens to the two NADH’s that are produced, in the presence of oxygen?
7. What 3-carbon compound is left after glycolysis?
8. How do yeast cells get rid of waste (pyruvic acid) and recycle the NADH back to NAD+ when
they don’t have enough oxygen to complete the Krebs cycle and electron transport?
9. How do your muscle cells get rid of waste (pyruvic acid) when they don’t have enough oxygen?
Name
Date_
Period_____
WORKSHEET REVIEW: Aerobic Respiration
Answer in complete sentences.
Respiration occurs when the end products of glycolysis enter the mitochondria. These products are then broken down
into smaller molecules with the help of oxygen. A large amount of energy (ATP) is formed in the process.
1. Where exactly does the Krebs cycle occur in the cell?
2. What is the major waste product of the Krebs cycle (HINT: Very common molecule)
3. What molecule actually enters the Krebs cycle, serving as a common link for the breakdown of not only sugars but
also fats and amino acids? (HINT: Next step after pyruvate...)
4. Why is the Krebs cycle so important to the cell, even if it doesn’t make many ATP directly?
5. As electrons are passed “downhill” from NADH to cytochromes and other carriers in the inner
membranes of the mitrochrondria, the energy is being used to pump ____ across the membrane
6. At the end of the electron transport chain, two electrons are joined with two _____ ions and half
a molecule of _______ to form one molecule of ________. (HINT: Very common substance)
7. Why is this whole process called the “chemiosmotic” mechanism?
8. Both the mitochondria and the chloroplasts contain very convoluted stacks of membranes on the inside. Explain
why this is not a coincidence.