1,708 Answered Questions for the topic biochemistry

Biochemistry Enzyme Kinetics

09/26/17

Regarding enzyme kinetics
Expressed as a multiple of its KM, how much substrate is required in order for an enzyme to be 50 % saturated? (i.e. what is [S]/KM?). And 98 % saturated?
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Biochemistry Enzyme Kinetics

09/26/17

Regarding enzyme kinetics
According to the Michaelis Menten equation, at what percentage of its maximum rate is an enzyme operating when [S] = ½ KM?
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Biochemistry Enzyme Kinetics

09/26/17

Regarding enzyme kinetics
 1. The KM of an enzyme/substrate combination is 125 mM, with a VMAX of 20 μM.s-1.  The concentration of enzyme is 45 nM. a. At what rate is product being formed when the concentration of substrate... more
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Biochemistry

09/25/17

Question regarding enzyme kinetics
Under conditions of saturating amounts of substrate the rate of formation of product is 50 nanomoles per ml of reaction volume every minute. [Hint: what do the words saturating amounts of substrate... more
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Biochemistry Enzyme Kinetics

09/25/17

Question involving enzyme kinetics
Under conditions of saturating amounts of substrate the rate of formation of product is 50 nanomoles per ml of reaction volume every minute. [Hint: what do the words saturating amounts of substrate... more
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Biochemistry

09/23/17

Difference between iron in hemoglobin and cytochrome
Why is it so that the Fe present in the haeme molecule of cytochrome cannot carry oxygen where as the one in haemoglobin can ?
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Biochemistry

08/21/17

atoms in a water molecule are held together by sharing electrons
I JUST NEED HELP   
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04/28/17

Asking what is the heart disorder/condition? ECG showed no P Wave
A young woman was at the gym doing great her normal workout. She would spend 45 minutes on the elliptical and then 15 minutes doing weight training. This was the regular routine for her as she did... more
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Biochemistry

04/24/17

If you add a small amount of glycinamide to a 3.3 μM solution of potassium hydroxide (a strong base) what percentage will be unprotonated?
I first need to find the ph then i can use the Henderson hasslbach equation
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Biochemistry Glycine

03/30/17

Determining amino content.
1mL of Standard Glycine (7.5mg mL-1) was diluted into a 100mL volumetric flask. One standard had 0.30mL of the diluted standard glycine and 0.20mL of distilled water. How would I calculate the... more
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03/30/17

How do I convert mg to μmol?
How do I convert 0.075mg into μmol?
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Biochemistry

02/21/17

two ebzye Xam1 and Xam2 have Kms of 34mM and 76mM repectively, which enzyme will have the higher Vmax?
A Xam1 since it has lower Km(higher affinity and higher Vmax) B Xam2 since it has higher Km(lowee affinity and higher Vmax) c we cannot tell,Vmax depends on activation energy, not Km d we cannot... more
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02/10/17

1) How do hydrogen bonds contributes to the high melting and boiling points of water?
1) How do hydrogen bonds contributes to the high melting and boiling points of water?   2) What functional groups of biomolecules can form hydrogen bonds?   3) Describe what happens when a... more
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02/10/17

1) How would you categorize water, as a nucleophile or electrophile?
1) How would you categorize water, as a nucleophile or electrophile?   2) Explain why the hydroxide (hydroxyl) ion is much more reactive than water?   3) What structural properties of the water... more
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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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