Explore BrainMass
Share

Enzyme calculations and Methane

This content was STOLEN from BrainMass.com - View the original, and get the already-completed solution here!

You are investigating the biochemical origins of cow methane emissions (belches and farts, to be blunt) which contribute to global warming.

Bacteria in the cow gut make methane and a key enzyme in the pathway is methyl-coenzyme M reductase. The turnover number of pure enzyme (mass 300 kDa) is 100 s-1. What is the specific activity of the enzyme in µmol.min-1.mg-1?

A cow typically 'emits' 100 L of methane gas a day. Given the concentration of methane in this gas is 0.05 M, how many mg of this enzyme does the cow gut contain?

© BrainMass Inc. brainmass.com October 25, 2018, 9:31 am ad1c9bdddf
https://brainmass.com/biology/biological-chemistry/enzyme-calculations-methane-576678

Solution Preview

The turnover number of pure enzyme (mass 300 kDa) is 100 s-1. What is the specific activity of the enzyme in µmol.min-1.mg-1?

You are investigating the biochemical origins of cow methane emissions (belches and farts, to be blunt) which contribute to global warming.

Bacteria in the cow gut make the methane ...

Solution Summary

Cow methane emissions (belches and farts) which contribute to global warming are caused by the methyl coenzyme M reductase. Bacteria in the cow gut make methane with the help of this key enzyme. This solution discusses these concepts further.

$2.19
See Also This Related BrainMass Solution

Chemistry Problems

9.24

When you are in a supermarket, which do you usually request, plastic or paper grocery bags? List the advantaged and disadvantages of plastic versus paper bags, and decide which is preferable. Then prepare a latter to the editor of a newspaper clearly stating your position and explaining your reasons for it.

9.27

A Web search for "landfills" can bring up high quality information about garbage. If you browse through these sites, you will see that a fair amount of controversy surrounds the plastic materials that can be used to construct the liner. Search for "landfill liners" and check out the plastics involved.

a. Which polymers are now used for liners?
b. What are their drawbacks?
c. Are there new polymers that offer more desirable properties? Cite the author and url of the web sites.

11.5

a. Calculate your BMI if you weigh 160 pounds.

12.18

One of the reasons that science fiction is successful is that it starts with a known scientific principle and extends, elaborates, and sometimes embroiders it. Perhaps you can be as successful as Michael Crichton was with Jurassic Park. Start by identifying a scientific principle, and then writing an outline (a few paragraphs) for a story based on that principle. Be sure to identify the chemical concepts that you plan to include and any pseudoscience that you might employ.

View Full Posting Details