Project #90169 - 101

I just need these questions answered

 

You are interested in the effect of pH on the enzyme catalase.   You place 5 ml of a catalase solution into three test tubes.   In the first test tube, you place 5 ml of distilled water, in the second test tube, 5 ml of a clear acidic solution and in the third test tube, 5 ml of a clear basic solution.   You then add 10 ml of hydrogen peroxide to the three test tubes.   In test tube 1 and test tube 2 you do not detect any oxygen production.   In the third test tube you detect an oxygen column of 12.5 centimeters.

 

 

 

1.   Identify the dependent variable of the experiment.

 

 

 

2.   Identify the independent variable of the experiment.

 

 

 

3.  What is the enzyme in this reaction?

 

 

 

2. Each of the following can be answered by photosynthesis, respiration or both.

 

4.  Occurs in mitochondria

 

5.  Produces oxygen.

 

6.  Occurs in plants.

 

 

 

3. Each of the following questions refers to enzymes.

 

 

 

  Enzymes work by lowering the energy of __________ in a reaction.

 

 

 

  Enzymes work on one or a limited number of molecules which are the ______.

 

 

 

   An enzymatic reaction that builds larger products from smaller substrates is called a ________________- reaction.

 

4. You placed some oak leaves in a biochamber and inserted oxygen and carbon dioxide sensors into the chambers.  After placing the biochamber in the light, you measured the amount of carbon dioxide and oxygen.  Then, you repeated the experiment with the biochamber wrapped in tin foil.

 

 

 

13.  The production of oxygen in the light would be due to the  __________ rate.

 

 14.  The consumption of oxygen while the leaves were wrapped in aluminum foil represents the _____ rate.

 

 

15. Photosynthesis produces ______________ which then feed into cellular respiration.

 

 

 

5. You are interested in the oxygen used for germination in peas.  You prepared two experiments.  In one biochamber, you placed 25 germinating peas and attached a carbon dioxide and oxygen sensor.  For 10 minutes, you measured the amount of carbon dioxide and oxygen in the biochamber.  In another biochamber, you placed 25 non germinating peas and measured oxygen and carbon dioxide in the biochamber for 10 minutes.

 

 

 

 16.  What are you measuring by noting the decrease of oxygen  in the biochambers?    

 

 

 

 17.  What gas increased with cellular respiration?

 

 

 

 18.   What is the role of the biochamber filled with dry peas?

 

 

Subject Science
Due By (Pacific Time) 10/31/2015 12:00 am
Report DMCA
TutorRating
pallavi

Chat Now!

out of 1971 reviews
More..
amosmm

Chat Now!

out of 766 reviews
More..
PhyzKyd

Chat Now!

out of 1164 reviews
More..
rajdeep77

Chat Now!

out of 721 reviews
More..
sctys

Chat Now!

out of 1600 reviews
More..
sharadgreen

Chat Now!

out of 770 reviews
More..
topnotcher

Chat Now!

out of 766 reviews
More..
XXXIAO

Chat Now!

out of 680 reviews
More..
All Rights Reserved. Copyright by AceMyHW.com - Copyright Policy