Unit 3: Bioenergetics

This unit examines the basic processes of photosynthesis and cellular respiration and the associated cell structures. How do organisms obtain and use energy to carry out their life processes? This unit comprises 10% of the information on the Keystone exam. 

**REMINDER: Unit 3 Test on Tuesday, October 2, 2012

Questions you should be able to answer and what you should be able to do: 
1.) Describe the structure of mitochondria(animal cell) and chloroplasts(plant cell) in eukaryotic cells. **Read the handouts from class. 
2.) Describe the fundamental roles of plastids and mitochondria in energy transformations. 
3.) Compare and contrast catabolic and anabolic reactions. 
4.) What are the overall (summary) chemical equations for photosynthesis and cellular respiration? 
5.) Compare the basic energy transformations during photosynthesis and cellular respiration.  
6.) What is the relationship between photosynthesis and cellular respiration? *Diagram from class. This is the website that goes with the diagram and it seems like a good overview of information.
7.) Describe the structure of ATP (video)
8.) Describe the role of ATP in biochemical reactions. 

** HOMEWORK FOR THE LONG WEEKEND: At the bottom of this page, I inserted the PowerPoint Presentation from class, which includes the Unit 3 Assessment Questions and Answers and Unit 3 Notes that you should have written down in class.  If you have the option, print out the pages of notes to study later.  The notes also have links to websites that may help you to better understand the information for the unit. Please read it over and review it this weekend. 

**TEST HINTS: 

1.) Know the diagrams of the mitochondria and chloroplast and how to tell the difference.
2.) Know the energy transformations in photosynthesis and cellular respiration (see the diagrams)
3.) Be able to explain catabolic reactions and examples.  You should be able to say why a specific example is a catabolic reaction.
4.) Know the chemical reactions for both photosynthesis and cellular respiration (see the diagrams)
5.) Be able to identify the structures of ATP, ADP, glucose, etc. 
6.) Small amount of vocabulary in this section, so be sure to know it ALL.

Vocabulary:
1.) adenosine diphosphate (ADP) 
2.) adenosine triphosphate (ATP) 
3.) anabolic reaction 
4.) catabolic reaction 

5.) cellular respiration 
6.) chemical energy 
7.) chloroplasts 
8.) electromagnetic energy 
9.) energy transformations 

10.) metabolism 
11.) mitochondria 
12.) photosynthesis 
13.) plastids
Adenosine diphosphate (ADP) - A nucleotide essential in photosynthesis and glycolysis. The product of removing one phosphate from ATP. Can be converted to ATP with the addition of one phosphate.

Anabolic reaction - Reaction that constructs or synthesizes molecules from smaller units, usually requiring input of energy (ATP) in the process.

Catabolic reaction - Reaction that releases energy as complex molecules are broken down into simpler ones.

Electromagnetic energy - Energy that comes from electromagnetic radiation. This radiation is composed of waves, such as radio waves and visible light, that move at the speed of light in a way that is suggestive of both waves and particles.

Chemical Energy - Energy released from a substance, or absorbed in the formation of a chemical compound, during a chemical reaction.


***Unit 2 Test Corrections - If you would like extra credit towards your Unit 2 Test, you may complete test corrections using the correct answers listed on the page provided.  You must write the question and answer (completely as you see it) three times each. Be sure to skip lines and write the entire answer provided.  You may NOT type the corrections. 
The corrections are due on Thursday, September 27.  All corrections must be done for the extra credit to be counted towards your Unit 2 test. 

Example of a complete correction:
1.) When organisms break the bonds of organic compounds, the organisms can
    c.) obtain energy or reassemble the resulting materials to form different compounds. 

1.) When organisms break the bonds of organic compounds, the organisms can
    c.) obtain energy or reassemble the resulting materials to form different compounds. 

1.) When organisms break the bonds of organic compounds, the organisms can
    c.) obtain energy or reassemble the resulting materials to form different compounds. 

Textbook Resources: Chapter 7 p. 180; Figures 7-11 & 7-12; Sections 8-1, 8-2 & 9-1; Figure 9-10
ć
Heather Janik,
Sep 27, 2012, 6:49 AM
Comments