1,722 Answered Questions for the topic biochemistry

02/10/17

What is the molar concentration of water in a solution of 10mM glucose?
1) How does the pH of a solution affect its solubility and structure of weak organic acids and bases, such as proteins and nucleic acids?   2) What is the molar concentration of water in a... more
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12/12/16

Do unsaturated fatty acids with an odd number of carbon atoms in their chain exist in nature (for example C21:3)?
Do unsaturated fatty acids with an odd number of carbon atoms in their chain exist in nature (for example C21:3)?
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Biochemistry Math Chemistry

11/21/16

Chemistry Help!
What is the temperature in K of 0.0420 mole of gas at 16.3 psi and that occupies 981... more
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Biochemistry Math Chemistry College Math

11/21/16

help with chemistry please!
In the reaction 2KClO3(s) --> 2KCl(s) + 3O2(g)How many liters of oxygen gas at STP are produced from 17.4 g of... more
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Biochemistry Science Biology Chemistry

10/29/16

Amount of ATP generated from glucose metabolism in the liver and muscle tissue. Show working out. HOW?
Glucose can be metabolised through glycolysis, the citric acid cycle and oxidative phosphorylation to produce energy for the body in the form of ATP. Calculate the net number of ATP that can be... more
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Biochemistry Biology Biology Tutor Bio

10/16/16

Disulfide bonds are most commonly apart of which protein structure?
a. Primary b. Secondary  c. Teritary d. Quaternary 
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Biochemistry

09/13/16

Find the Ph of the solution.
If 50 mL of 0.30 M propionic acid [PA] is added to 250 mL of 0.024 M NaOH, what is the resulting pH of the solution? pK = 4.87.   I keep getting an answer of 4.47, but I know that it should be... more
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Biochemistry Biology Volume Acid Base

08/28/16

If a patient has a blood volume of 4.7L, how much H+ is in deficit?
I know that is has to do with pH and hydrogen ions, but i do not know what is the correlation between volume and hydrogen ions
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Biochemistry Science Biology Chemistry

05/19/16

The relative rates of CO2 production by glycolysis and by the pentose phosphate path can be determined by measuring the rates at which 14CO2 appears following i
The relative rates of CO2 production by glycolysis and by the pentose phosphate path can be determined by measuring the rates at which 14CO2 appears following ingestion of glucose labeled with 14C... more
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Biochemistry

03/29/16

what is the best knockout technique for IDH1 and 2 isozymes
 This is a question that has to do with the TCA cycle
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02/18/16

n an actual combustion expirement 88 grams of propane produced 176 grams. how many grams of co2 should have been produced theoretically
in an actual combustion expirement 88 grams of propane produced 176 grams. how many grams of co2 should have been produced theoretically
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02/15/16

Fill in the blank: Aerobic Respiration requires constant supply of ____and fuel from the following energy storage molecules: _____ or ____.
Student of biochemistry in first year of college. I am stuck at this only fill in the blank question. Can anybody please help? The qustions is - Aerobic Respiration requires constant supply of... more
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11/20/15

What is the effect of acidification of oceans on uptake of calcium carbonate for shelled organisms??
What is the effect of acidification of oceans on uptake of calcium carbonate for shelled organisms?
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Biochemistry

11/09/15

Drugs that readily penetrate biological membranes often are, as part of their metabolism, conjugated to glucuronic acid. WHAT WOULD THIS MODIFICATION achieve, s
Drugs that readily penetrate biological membranes often are, as part of their metabolism, conjugated to glucuronic acid. WHAT WOULD THIS MODIFICATION achieve, structurally/ functionally ?
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Biochemistry

11/09/15

If you were to use an antibody to identify a N-acetylglucosamine ( GlCNAC) transferase in a cell, what compartment of the cell would you expect to find this enz
If you were to use an antibody to identify a N-acetylglucosamine ( GlCNAC) transferase in a cell, what compartment of the cell would you expect to find this enzyme?WHY do you say this?
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Biochemistry Biology Chemistry

11/09/15

You are mapping a particular sequence of DNA that is 7.5 kb in length...
You are mapping a particular sequence of DNA that is 7.5 kb in length . You ‘cut’ it (by incubation) with HindIII and obtain 3 fragments of 1 kb, 2kb, and 3.5 kb You cut it with Bam HI and obtain 2... more
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11/08/15

Draw a glycosidic bond between beta-D-2 deoxyribose and N-acetyl neuraminic acid
 Draw a glycosidic bond between beta-D-2 deoxyribose and N-acetyl neuraminic acid 
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Biochemistry

11/03/15

Please help with biochemistry
DNA topoisomerase II unwinds DNA using the free energy derived from ATP hydrolysis to ADP and Pi. To follow continuously the catalytic turnover of DNA topoisomerse II, an enzymatic assay needs to... more
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Biochemistry

11/02/15

I need help with Biochem
DNA topoisomerase II unwinds DNA using the free energy derived from ATP hydrolysis to ADP and Pi. To follow continuously the catalytic turnover of DNA topoisomerse II, an enzymatic assay needs to... more
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Biochemistry

11/01/15

Please help with biochem
The first law of thermodynamics states that the amount of energy in the universe is constant, but that the various forms of energy can be interconverted. Describe four different types of such... more
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Biochemistry

10/22/15

Help please
Staphylococcal nuclease accelerates phosphodiester bond hydrolysis by a factor of 5.6x1014 over the spontaneous rate (1.7x10-13). How much does staphylococcal nuclease decrease the activation... more
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Biochemistry

10/19/15

I need help with biochem
Staphylococcal nuclease accelerates phosphodiester bond hydrolysis by a factor of 5.6x1014 over the spontaneous rate (1.7x10-13). How much does staphylococcal nuclease decrease the activation... more
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Biochemistry

10/18/15

I need help with biochemistry
The covalent catalysis mechanism of an enzyme depends on a single active site Cys whose pKa is 8. A mutation in a nearby residue alters the microenvironment so that this pK increases to 10. Would... more
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Biochemistry

10/18/15

I want help with biochemsitry
Would you expect chymotrypsin to catalyze peptide bond formation?
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Biochemistry

10/05/15

Please I need help with biochemistry
selenocysteine and pyrrolysine. Based on their structure, what unique reactions/weak interactions can they engage in? Why are they called the 21th and 22th amino acids
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