Photosynthesis and Cellular Respiration Exam
Name:_________________________Date:_________Period:______
Directions: Answer the questions to the best of your ability.
1. Where do living organisms get their energy?
__________________________________________________________________
2. What kinds of organisms make their own food?___________________________
3. What do cells use to move materials into and out of cells?___________________
4. What kind of energy do living cells need?________________________________
5. Where do cells get the raw materials and energy needed to perform the functions
of the cell?_________________________________________________________
6. Organisms can be grouped on how they obtain their food, basically on how they
get their nutrition, so what are organisms called that need to consume or eat
another organism called?_____________________________________________
7. What is a producer, and explain what it produces?_________________________
____________________________________________________________________
8. What is the name of the type of organism that breaks down dead organisms
called?
__________________________________________________________________
9. Where does nearly all life get its energy from? ____________________________
10. What is the process called where plants make food/sugars from carbon dioxide
and water and sunlight?______________________________________________
11. What else besides glucose does photosynthesis produce?____________
Review the elements, using a period table to answer questions 12-14.
12. What is the chemical symbol for Carbon?___________
13. What is the chemical symbol for Hydrogen?_________
14. What is the chemical symbol for Oxygen?___________
15. Write the chemical formula for Carbon dioxide___________________________
16. Write the chemical formula for water.___________________________________
17. Write the chemical formula for glucose (sugar) ___________________________
18. Write the chemical formula for oxygen gas ______________________________
19. What type of energy is light energy converted into?________________________
20. Where is this type of energy stored? ____________________________________
21. What is the name of the organelle where photosynthesis occurs?______________
22. What is the name of the pigment that captures the light energy?_______________
23. Write the chemical equation below for photosynthesis:
__________ + __________ + light energy
___________ + _______
(FYI: The things on the left of the arrow are called reactants and the things to the right are called the products)
24. What does glucose used for?__________________________________________
25. If glucose is not used and it is stored what is the name of the substance it is often
stored as called?____________________________________________________
26. Where does photosynthesis in the plant usually occur at, name the structure of the
plant where chloroplasts are usually found? _____________________________
27. How do cells get energy from food?_____________________________________
_____________________________________________________________________
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28. What is ATP? ______________________________________________________
29. What process produces ATP?__________________________________________
30. Where does cellular respiration happen inside a prokaryotic cell?
________________________________
31. In eukaryotic cells where does cellular respiration occur?____________________
32. What are the starting materials of cellular respiration? ______________________
33. In eukaryotes where does the first stage of cellular respiration occur? __________
___________________________________________________________________
34. What is glucose broken down into during the first stage of cellular respiration?
_____________________________________________________________________
35. What does the next stage of cellular respiration require? ____________________
36. Where does this stage (the second stage) of cellular respiration occur at?
__________________________________________________
37. As oxygen enters a cell and travels to the mitochondria the 3-carbon molecule is
broken down and WHAT is captured and stored in ATP?___________________
38. What are the products of cellular respiration?
_________________________________________________________________
39. How is carbon dioxide released by animals?
_________________________________________________________________
40. Most of the energy from cellular respiration is transferred to ATP, but what
happens to some of the energy, how is it released?_________________________
41. What happens when ATP is broken down?_______________________________
42. Write the chemical equation below for cellular respiration:
__________ + __________
___________ + _______ + ________
43. What are the chemicals on the left side of the reaction called?________________
44. What are the chemicals on the right side of the arrow called?_________________
45. What is the function of the chloroplast and what process occurs in this organelle
and where is it found? ________________ _______________ ______________
46. What is the function of the mitochondria, and what is the name of the process, and
in what types of cells can you find mitochondria?
______________________ ____________________ ________________________
47. What problems can too much carbon dioxide in the environment cause?
__________________________________________________________________
__________________________________________________________________
48. How can humans reduce the amount of carbon dioxide in the atmosphere?
__________________________________________________________________
49. How is carbon recycled in the environment? ______________________________
__________________________________________________________________
50. How are animals and plants connected to one another? _____________________
__________________________________________________________________
__________________________________________________________________
EXTRA CREDIT: How many protons, ______neutrons______ and electrons_____ does
an atom of the element of Carbon have? What is the molecular mass of carbon dioxide?
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Photosynthesis and Cellular Respiration Exam ANSWER KEY
1. From either making or consuming food.
2. Producers
3. Cells use energy
4. Chemical energy
5. Food
6. Consumers
7. Producers such as chemotrophs and phototrophs make their own food
8. Decomposers
9. From the Sun
10. Photosynthesis
11. Oxygen
12. C
13. H
14. O
15. CO2
16. H2O
17. C6H12O6
18. O2
19. Chemical Energy
20. In glucose stores chemical energy for use, and if it is not used then it converts to starch
21. Chloroplast
22. Chlorophyll
23. CO2 + H2O + Sunlight Energy C6H12O6 + O2 + ATP(Chemical Energy)
24. Glucose is a sugar used for food that is broken down into energy for cells to do work
25. Starch/Glycogen
26. In the leaf primarily
27. In the mitochondria glucose is broken by cellular respiration
28. A high energy molecule Adenosine triphosphate
29. Cellular Respiration
30. In the cytoplasm and cell membrane
31. In the mitochondria
32. Glucose and oxygen
33. In the cytoplasm
34. Two 3 carbon molecules
35. Oxygen
36. In the mitochondria
37. Energy
38. ATP, water and carbon dioxide
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39. In animals it is carried to the lungs and exhaled
40. Some is released as heat
41. The energy released is used for cellular activities
42. C6H12O6 + O2 CO2 + H2O+ ATP
43. Reactants
44. Products
45. Capture light energy, photosynthesis, in cells of photosynthetic organisms such as plants
46. Break down glucose into energy, cellular respiration, mitochondria can be found in animal
and plant cells
47. It can trap too much heat in the atmosphere and possibly lead to global warming
48. Plant trees, stop clear cutting forests, and reduces carbon emissions, use cleaner burning
fuels
49. Carbon is released by organisms in the process of cellular respiration and by burning fossil
fuels, and is taken up by phytoplankton in the oceans and plants and used to make food that
animals eat, and in the process of cellular respiration get energy for their cells to do work and
then release carbon dioxide as a waste product where the cycle continues by an interaction
between organisms and their environment.
50. Plants use carbon dioxide animals release along with water and sunlight energy to make
glucose and oxygen which animals need in the process of cellular respiration to extract the
energy for their cells to do work. This energy is in the form of ATP and water, and carbon dioxide
are released as waste products, plants and photosynthetic organisms use.
EXTRA CREDT: Carbon has 6 protons, 6 neutrons, and 6 electrons, and its mass is 12 amu
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