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Warm-Up: Energy in a Cell

 
Use each of the terms below just once to complete the passage.

energy      phosphate                  adenine            charged
ATP            chemical bonds            work                  ribose
 

 1. 
To do biological ___________, cells require energy.
 

 2. 
A quick source of energy that cells use is the molecule _____________.
 

 3. 
The ____________ in this molecule is stored...
 

 4. 
... in its __________________________.
 

 5. 
ATP is composed of a(n) ______________molecule ...
 

 6. 
... bonded to a(n) __________ sugar.
 

 7. 
Three _______________ molecules ...
 

 8. 
... called _____________ groups are attached to the sugar.
 
 
Examine the diagram below. Then answer the questions.

nar002-1.jpg
 

 9. 
How is energy stored and released by ATP? [Use complete sentences to answer the question.]
 

 10. 
How do cells ue the energy released from ATP? Give two  (2) examples.
 
 
Determine is the statement is TRUE (write True if it is true). If it is not true, rewrite the italicized word to make it true.
 

 11. 
Photosythesis is the process plants use to trap the sun’s energy to make glucose.
 

 12. 
ATP molecules are made during the light-independent reactions of photosynthesis.
 

 13. 
Carbon dioxide gas is produced during photosynthesis.
 

 14. 
The light-dependent reactions of photosynthesis take place in the membranes of the thylakoid discs in mitochondria.
 

 15. 
The thylakoid membranes contain chlorophyll and other pigments that absorb sunlight.
 
 
Number the following steps of the LIGHT-DEPENDENT reactions in the order in which they occur.
 

 16. 
The energy lost by  electrons as they pass trhough the elctron transport chain is used to make ATP.
A
1
C
3
B
2
D
4
 

 17. 
The elctrons pass from the chlorophyll molecules to an electrontrasnport chain.
A
1
C
3
B
2
D
4
 

 18. 
Sunlight strikes the chlorophyll molecules in the thyllakoid membranes.
A
1
C
2
B
4
D
3
 

 19. 
NADP+ molecules change to NADPH as they carry the elctrons to the stroma of the chloroplasts.
A
3
C
6
B
4
D
5
 

 20. 
The sunlight’s energy is transferred to the chlorophyll’s electrons
A
1
C
4
B
2
D
3
 

 21. 
The electrons are passed down a second electron transport chain.
A
3
C
6
B
4
D
5
 
 
ANSWER THE FOLLOWING QUESTIONS:
 

 22. 
How are the electrons that are lost by chlorophyll molecules replaced?
 

 23. 
How do plants produce oxygen during photosynthesis?
 



 
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