Search found 17 matches

by nickname
Thu Feb 10, 2011 2:24 am
Forum: Cell Biology
Topic: What portion of the protein shows the greatest identity?
Replies: 1
Views: 1337

What portion of the protein shows the greatest identity?

There are three proteins and the percent identity (how similar they are to each other) for them is the following: sequence 1 vs sequence 2: 55% sequence 1 vs sequence 3: 57% sequence 2 vs. sequence 3: 96% When looking at sequences 2 and 3, they are extremely close to each other. It is mentioned that...
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Thu Jan 20, 2011 5:01 pm
Forum: Cell Biology
Topic: protein expression amount (high or low)
Replies: 1
Views: 1395

protein expression amount (high or low)

Is the expression of 33,000 molecules of ARNT in a cell a lot in comparison to other proteins in the cell? I want to know my answer is correct and why. Thank you. My answer: 33,000 is a small amount of protein (ARNT) expression sicne other molecules such as AHR have expression of greater than 300,00...
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Wed Nov 24, 2010 7:55 pm
Forum: Cell Biology
Topic: gluconeogenesis from pyruvate--> labeling carbon
Replies: 6
Views: 23951

Thank you USFBiomed. So since pyruvate is 3 carbons and glucose is 6 I connect the last of pyruvate with the first incoming carbon atom so 3 and 4 like you said. Is this explanation correct? Thanks again for your help and happy holidays!
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Tue Nov 23, 2010 7:10 pm
Forum: Cell Biology
Topic: gluconeogenesis from pyruvate--> labeling carbon
Replies: 6
Views: 23951

So for this kind of problem you look at where the new carbon is being attached to, correct?
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Tue Nov 23, 2010 4:30 pm
Forum: Cell Biology
Topic: gluconeogenesis from pyruvate--> labeling carbon
Replies: 6
Views: 23951

gluconeogenesis from pyruvate--> labeling carbon

I have to predict the positions of the glucose molecule that would become labeled from the 1-14C pyruvate (i.e, the label in the carboxyl group of pyruvate). a) Carbon-1 b) carbon-2 c) carbon-3 d) carbon-4 e) carbon-5 d) carbon-6 I first thought that carbons 1 and 6 were the correct answers, but the...
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Tue Nov 23, 2010 4:12 pm
Forum: Cell Biology
Topic: glucokinase vs hexokinase
Replies: 3
Views: 22476

Re: glucokinase vs hexokinase

Hello,

I didn't pick my answers randomly
by nickname
Tue Nov 23, 2010 3:13 am
Forum: Cell Biology
Topic: glucokinase vs hexokinase
Replies: 3
Views: 22476

glucokinase vs hexokinase

I have to say if the following are describing glucokinase, hexokinase, or both. I have answered them (don't know if they are correct) and I'm unsure about some of them. Any help will be appreciated it. a) present in tissues that are less dependent on glucose for energy---> hexokinase b) prevents cel...
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Thu Nov 11, 2010 10:51 pm
Forum: Cell Biology
Topic: separate redox reaction into its componet half-reactions
Replies: 2
Views: 14459

I got it! Thank u!
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Thu Nov 11, 2010 10:50 pm
Forum: Cell Biology
Topic: calculating standard reduction potential for a reaction
Replies: 1
Views: 4982

calculating standard reduction potential for a reaction

I have to calculate the standard reduction potential for the reaction Cu(III) to Cu(II). the following info is given and it says that I have to use the formula delta G= -nFE 1. CU3+ + 2e- ---> Cu+ E1= 1.28V 2. CU2+ + e- ---> Cu+ E2= 0.15V 3. Cu2+ + 2e- ----> Cu(s) E3= 0.34V 3. Cu+ + e- ----> Cu (s) ...
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Thu Nov 11, 2010 8:59 pm
Forum: Cell Biology
Topic: separate redox reaction into its componet half-reactions
Replies: 2
Views: 14459

separate redox reaction into its componet half-reactions

I have to write the oxidation and reduction reactions for 3O2 + 4Fe---> 2Fe2O3

As the oxidation-half reaction I have 4Fe--->4Fe^3+ + 12 e-

As the reduction half reaction I have 3O2 + 12e- ---> 6O^2-

are my answers correct? Thank you!
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Wed Nov 10, 2010 10:51 pm
Forum: General Discussion
Topic: biochemistry-enzyme kinetics lab help
Replies: 2
Views: 5868

Thank you so much for your help!
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Mon Nov 08, 2010 9:49 pm
Forum: Cell Biology
Topic: insulin pathways
Replies: 1
Views: 5086

insulin pathways

insulin is a hormone that travels thorugh the blood to cells, triggering the cells to alter metabolic proceses. Insulin does not enter target cells, but instead binds to an extracellular receptor, starting a signal transduction pathway in the cell. I have to put the steps in order from the circulati...