Unit 6 Respiration and Photosynthesis
Name:________________________
6.1 Chemical Energy and ATP
1. All cells use __________to transfer energy from the breakdown of food to cell processes.
2. ATP stands for __________________________________________________.
3. Energy is released from ATP when a _____________________ is removed.
4. _______________________ is a lower energy molecule that can be converted to ATP.
5. When a phosphate is removed from ATP, energy is _____________________ for cell functions.
6. ________________________________ is most commonly broken down to make ATP.
7. The largest amount of ATP is made by breaking down ________________________.
Short Answer Questions:
8. How is the energy held in ATP released?
9. Why is ATP considered the “currency” of the cell?
6.2 Cellular Respiration
1. Fermentation does not make energy, but allows ____________________________ to continue.
2. Fermentation occurs when there is a lack of _____________________________.
3. ___________________ fermentation occurs in muscle cells and causes them to “burn” after
exercise.
4. Yeast undergoes ________________________________ fermentation.
5. The products of alcoholic fermentation are 2 alcohol and 2 _____________________________.
6. ____________________ is an example of a product using alcoholic fermentation.
7. When bread dough is baked, the alcohol created during fermentation _______________ into the
air. The air pockets in the bread are from _____________, which is released from alcoholic
fermentation
8. Cellular respiration is an _________________ process, which needs oxygen to take place.
9. The first step of respiration is glycolysis, which splits ________________ into two 3-carbon
molecules called ____________.
10. Glycolysis takes place in the _______________________ of the cell.
11. Glycolysis does not need ___________________ to take place; it is an anaerobic process.
12. In the Krebs cycle, pyruvate enters the _________________.
13. _________________________ is given off as a byproduct of the Krebs cycle.
14. The electron transport chain occurs in the _________________________________ of the
mitochondria.
15. Only 2 ATP are made in glycolysis, but _____________ ATP are made in the electron transport
chain.
16. Between Glycolysis and the Krebs Cycle, pyruvate is transformed into ___________________.
Unit 6 Respiration and Photosynthesis
Name:________________________
Fill in the following chart showing the processes of cellular respiration:
Short Answer questions:
17. What is the purpose of cellular respiration?
18. What is the equation for Cellular Respiration? Label products and reactants and tell which
process each product or reactant comes into play (Glycolysis, Krebs, ETC)
19. How does altitude affect cellular respiration? Why can training at altitude be an advantage for
endurance athletes?
20. Which part of cellular respiration does cyanide affect? How? Describe one use of cyanide
poisoning throughout history.
Unit 6 Respiration and Photosynthesis
Name:________________________
6.3 Photosynthesis
1. The energy for almost all organisms on the planet begins as _________________________.
2. Plants use ____________________ light for energy, which looks white but contains several
colors.
3. Chlorophyll reflects ________________ light and absorbs other colors.
4. Chlorophyll is found in the ______________________.
5. In the light reactions of photosynthesis, ______________ captures sunlight and transfers energy
to ATP.
6. In the dark reactions of photosynthesis, _________________ reacts to build larger molecules.
7. The dark reactions occur in the _________________ of the chloroplast.
8. The chemical formula for glucose is ___________________________.
9. Glucose is often used to build starches and ___________________________.
Short Answer
10. What is the equation for photosynthesis? Label the products and reactants. How does this
equation compare/contrast to the equation for cellular respiration?
11. What is the main pigment in most plant leaves? Why are most leaves green (talk about white
light and what happens when it hits the surface of the leaf)?
12. The world’s largest tree is the General Sherman in Sequoia National Park. It is over 2000 years
old, 275 feet tall (almost the length of a football field) and 79 feet around. It is also estimated to
weigh over 1000 tons (2,000,000 pounds!) Where did all of General Sherman’s mass come
from? How does photosynthesis help explain how this is possible?