Download Cell Respiration Internet Activity

Name:______________________________
Date:_____________________
Cellular Respiration Internet Activity
WRITE OUT THE EQUATION FOR CELLULAR RESPIRATION:
Step 1: Glycolysis
Go to the following website (you may have to Google it):
www.science.smith.edu/departments/Biology/Bio231/glycolysis.html
Follow the instructions below and answer the questions:
1. Read the introduction
2. Click on 1- Start Glycolysis and watch the animation.
a. How many ATPs are needed to start glycolysis?
b. How many carbons are in the original organic molecule? What is this molecule
better known as?
c. After the ATP is added to the reaction, how many carbons does the new organic
molecule have? What is this molecule better known as?
3. Click on 2- Splitting of glucose and watch the animation.
a. When glucose is split, what is created?
b. What happens to ATP as glucose is split?
4. Click on 3- Energy generation and watch the animation.
a. What organic molecule is created by glycolysis? How many carbon atoms does
each molecule have?
b. How many ATPs (per one glucose molecule) are created by glycolysis? How many
total ATPs are present after glycolysis?
BIG POINT:
Where does glycolysis occur?
Step 2: Kreb’s Cycle
Go to the following website (you may have to Google it):
www.science.smith.edu/departments/Biology/Bio231/krebs.html
Follow the instructions below and answer the questions:
1. Read the introduction.
2. The Kreb’s Cycle is also known as the _____________________________ _______________________
Cycle.
3. Click on 1 as many times as necessary to answer the questions.
a. What enters the mitochondria?
b. What is the above substance converted to?
c. What is ultimately produced?
4. Click on 2 as many times as necessary to answer the questions.
a. What combines with oxaloacetate?
b. What is formed?
5. Click on 3 as many times as necessary to answer the questions.
a. What is generated by a series of redox reactions?
b. At the conclusion of one cycle, one pyruvate molecule generates, SPECIFICALLY,
what and in what quantity?
BIG POINTS:
Where does the Kreb’s cycle occur?
Describe, in your own words, the major products of the Kreb’s cycle and the importance of each.
Step 3: Electron Transport Chain
Go to the following website (you may have to Google it):
www.science.smith.edu/departments/Biology/Bio231/etc.html
Follow the instructions below and answer the questions:
1. Read the introduction.
a. What is the electron transport chain (ETC)?
b. Where does the ETC occur?
2. Click on START then CONTINUE.
a. What will be passed along the ETC?
3. Click on 1 and watch the animation, reading the information in the box. Then click on 2
and watch the animation, reading the information in the box!
a. Where are the protons (H+) moved from and to?
b. What is the energy source for the H+ to move AGAINST the concentration
gradient? What molecule brought them to the ETC?
c. What are the two energy carrier molecules that provide electrons to the chain?
d. When the electron reaches the end of the chain, what happens to it and what
compound is made?
4. Click on 3 and watch the animation.
a. Where does the energy used to make ATP come from?
b. What is the name of the carrier protein that enables the synthesis of ATP?
BIG PICTURE:
Relate cellular respiration to the process of photosynthesis. How are they directly related?
Explain reactants and products, explaining how they are shared between the two.
Draw out a detailed picture of a chloroplast AND a mitochondrion.