1,708 Answered Questions for the topic biochemistry

Biochemistry

11/23/19

Compare Lowry assay with other existing comparable methods to measure protein concentration?
Compare to Bradford assay, BCA and UV absorption
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Biochemistry

11/23/19

Explain how Beer-Lambert law is used in spectroscopy?
How would i use the principle behind Beer Lambert and the equation to explain this?
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Biochemistry

11/20/19

How do i answer this?
The dimensions of a prokaryotic ribosome are approximately 14 nm x 20 nm. If ribosomes occupy 20% of the volume of a bacterial cell calculate how many ribosomes are in a typical cell such as E.... more
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Biochemistry Math Science Chemistry

11/19/19

Select every statement that is true concerning the Lewis dot structure for BeC2N2 (a linear molecule with beryllium in the center).?
Question options:There is at least one atom that does not have 8 electrons.There is at least one atom that has more than 8 electrons.There is at least one double bond. (Triple bonds do not count as... more
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Biochemistry Science Biology Chemistry

11/18/19

"Using the protein Haemoglobin as an example discuss how the hierarchical structure of a protein influences its biological function".

"Using the protein Haemoglobin as an example discuss how the hierarchical structure of a protein influences its biological function". 
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Biochemistry Biology

11/17/19

How is Respiration affected in the mitochondria.

The electrochemical energy inherent in the difference in proton concentration and the separation of charge across the inner mitochondrial membrane drive the synthesis of ATP as protons flow... more
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11/15/19

What is the results on Figure 2. on panels A, B, and C
Figure 2. is on page 26https://www.biorxiv.org/content/biorxiv/early/2019/02/06/541979.full.pdf
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11/14/19

Cyanide and electron transfer
When people ingest cyanide ion, the cyanide binds strongly to the enzyme that transfers electrons from cytochrome c to oxygen.  This blocks the enzyme from functioning.Why does this cause... more
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11/13/19

BIOLOGY DNA QUESTION
for the following mRNA with the seq 5' AUGCGGUACAGCUUAGC 3' what is the originating genomic DNA template strand? I said GCUAAGCUGUACGCUA. is this correct or should the U be replaced with T?Thank you. more
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Biochemistry Biology Chemistry

11/04/19

Calculate the amount (in g) of NaOH required to prepare 150 mL of 3 M NaOH solution
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11/02/19

Confusing Chemistry Math Question

If a closed vessel is charged with 65000.0 Pa of nitric oxide and allowed to react with excess liquid bromine, what is the equilibrium partial pressure of the product?NO(g) + 1/2 Br2(l) ↔ NOBr(g)... more
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11/02/19

Confusing Chemistry Math Question

The equilibrium constant for dissociation of ammonium chloride:NH4Cl(s) ↔ NH3(g) + HCl(g)is equal to KP = 0.013312 at 550.0 K. If 1.7 g of ammonium chloride is placed in a 1.0 L vessel and charged... more
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11/02/19

Chemistry Math Question

100.0 mL of a .40 M solution of unknown weak acid is combined with 50 ml of a .25 M strong base, and the final pH of the solution is measured to be 5.25. What is the pKa of the unknown acid?
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11/02/19

Chemistry Math Problem

Calculate the percentage of acetic acid that exists in ionized form when dissolved in water at 0.65 M total concentration. Ka(HOAc) = 1.76 x 10-5.
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Biochemistry Chemistry

11/01/19

Knowing that: NaOH + HCl → NaCl + HB2BO How many moles of HCl are required to react with 1 mole of NaOH? How many were required to react with the number of moles added in the titration?

Knowing that: NaOH + HCl → NaCl + HB2BOHow many moles of HCl are required to react with 1 mole of NaOH? How many were required to react with the number of moles added in the titration?
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10/30/19

Does ADP allosterically activate or inhibit pyruvate kinase in Glycolysis? Or does it play a role in the allosteric regulation? If so, how?

I cannot find anywhere in my textbooks or scientific literature if whether or not ADP plays a role in allosterically activating or inhibiting pyruvate kinase in the glycolytic pathway. I know that... more
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10/28/19

Buffer Solution Chemistry Math Question 6
How many grams of potassium lactate (KC3H5O3) must be added to 276.0 ml of 0.2 M lactic acid in order to prepare a buffer solution at pH 3.3? The pKa of lactic acid is 3.8.
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10/28/19

Buffer Solution Chemistry Math Question
How many grams of benzoic acid would you add to 25 mL of 0.45M sodium benzoate in order to prepare a buffer solution at pH=3.8? Ka of benzoic acid is 6.3E-5
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10/25/19

What is the probable diagnosis if BUN is high and serum creatinine is normal?
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10/23/19

Acids & Bases Chemistry Math Question 6
An aqueous solution containing 0.24 M of unknown base has a measured pH equal to 8.39. What is the value of pKb for the unknown base?
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10/23/19

Acids & Bases Chemistry Math Question 5
In a 0.1 M solution of chlorous acid, what percentage of the acid is ionized to the chlorous anion, ClO2-? Ka = 1.1 x 10-2
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10/23/19

Acids & Base Chemistry Math Question
A solution of carbonic acid has its pH adjusted to 8.19 by addition of strong base. What is the equilibrium concentration ratio of carbonate ion to carbonic acid in the final solution? The acid... more
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10/18/19

Calculate the formula mass of each compound. Keep at least one decimal place in atomic masses from the periodic table.
hydrogen peroxide, H2O2: phosphoric acid, H3PO4:
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10/17/19

Chemistry: Equilibrium Math Question 9
The equilibrium constant for dissociation of ammonium chloride:NH4Cl(s) ↔ NH3(g) + HCl(g)is equal to KP = 0.013312 at 550.0 K. If 1.5 g of ammonium chloride is placed in a 1.0 L vessel and charged... more
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10/17/19

Chemistry: Equilibrium Math Question 8
The water-gas shift reaction is crucial to many industrial processes:H2O(g) + CO(g) ↔ H2(g) + CO2(g)The equilibrium constant for this reaction is K = 3.087012 at 802.0 K. If a vessel is initially... more
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