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Water activity

water activity

(Science: chemistry) An expression of the relative availability of water in a substance. Pure water has an water activity of 1.000. The water activity of a solution is one-hundredth its relative humidity.


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Multiple reactions buffer and enzymatic special activity

... that is concentrated and if I dilute 3 ml of that by adding 30 ml of water which will bring the buffer concentration to 25 mM Tris-HCl, Ph 8.0, ... this assignment: an enzyme has is provided in a concentration of mg/ml, activity mU/ml and specific activity of pmol/min/mg that is the one unit ...

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by dalin
Wed Oct 17, 2012 3:40 am
 
Forum: Molecular Biology
Topic: Multiple reactions buffer and enzymatic special activity
Replies: 7
Views: 3065

solutions containing different concentrations of oxaloacetat

... Malate stock is 8 mM NADH stock is 1 mM we made dilutions of these with water as shown below: Dilution of 1:2 OAA: 500 μL water + 500 μL OAA malate: ... that would apply to the development of an assay for measuring the activity of the Enzyme? and why we would want to see a relation between the ...

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by ladwer
Sun Oct 07, 2012 2:38 am
 
Forum: General Discussion
Topic: solutions containing different concentrations of oxaloacetat
Replies: 1
Views: 1800

Re:

... be to emulate human capacitance? Because I know even 2 litre bottles of water (suitably modified) are capable of holding dangerous charges... and ... 'corona' is derived from the solar corona. In a converse point, solar activity streams a lot of protons (and thus positive ions) - which is a natural ...

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by JoshuaFlynn
Thu May 31, 2012 1:18 pm
 
Forum: Human Biology
Topic: Electromagnetic fields generated by the human body
Replies: 40
Views: 165490

Chemiosmosis, the movement of hydrogen ions to make ATP, was

... ATP synthase F. Glucose is oxidized in cellular respiration while water is oxidized in photosynthesis, which provides some of the hydrogen ... of chemiosmosis in cellular respiration is for all cellular metabolic activity. 1. similarities 2. Differences 3. Neither

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by rurutashy
Thu May 31, 2012 12:17 am
 
Forum: Cell Biology
Topic: Chemiosmosis, the movement of hydrogen ions to make ATP, was
Replies: 1
Views: 6717

I need some help...

... of heavy metal ions mixed with lactase affect the enzymes activity? Obviously the responding variable would be the concentration of ... stock solution (100 mg/mL) 1.0 mI, of pH 7.0 buffer 2.0 mL of distilled water A) MAKING THE ENZYME SOLUTION Put 25 drops of Lactaid® into 25 mL of ...

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by fubario
Fri Mar 16, 2012 3:34 am
 
Forum: Molecular Biology
Topic: I need some help...
Replies: 3
Views: 2770
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