1,705 Answered Questions for the topic biochemistry

Biochemistry

09/09/22

Amino Acid Protonation States for Tyrosine
a) At which pHs will Tyr’s amine be protonated? Deprotonated? What about its carboxylic acid and its OH? b) At which pHs will a solution with many tyrosine molecules contain a mixture of OH and O–?... more
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Biochemistry

09/06/22

Dielectric points
Explain why the dielectric constants of the following pairs of liquids have the order given in Table 2-1(a) carbon tetrachloride and chloroform; (b) ethanol and methanol; and (c) acetone and formamide more
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09/03/22

How much aluminum hydroxide in kilogram is needed for the batch size?
Antacid tabletAluminum hydroxide - 325 mgMannitol - 812 mgSodium saccharin - 0.4 mgSorbitol (10% w/v solution) - 32.5 mgMagnesium stearate - 35 mgMint flavor concentrate - 4 mgBatch size: 150,000... more
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09/03/22

Is energy always associated with biochemical processes?
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Biochemistry Biology Chemistry

09/02/22

Identifying Bond Type Lab Write up
Identifying Bond Type Lab Write upChoose one of the substances that you tested. Then, answer all the following questions. Your answer should include at least five complete sentences. Which... more
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09/01/22

A pharmacist is to prepare 300 g of an ointment containing 50 mL of glycerin. The density of glycerin is 1.25 g/mL.
What is the % w/w of this preparation?
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09/01/22

A pharmacist is asked to compound a 200 mL mixture containing maldroxyl 50 mL, diphenydramine elixir 50 mL, and viscous lidocaine 2%.
How much viscous lidocaine 2% is needed to prepare the order?
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09/01/22

What is the final concentration (w/w) of zinc oxide ointment when 250 g of a 2.5% zinc ointment and 300 g of a 5% zinc oxide ointment are mixed?
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Biochemistry Biology Biostatistics

08/26/22

A researcher is trying to study a enzyme-catalyzed reaction in lab. while the reaction is fully saturated with substrate, what should he do to speed up the reaction..?
Options are :A) Add more enzymeB) Adjust the pH to 7.2C) Increase the temperatureD) Remove some substrate
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Biochemistry Chemistry

08/26/22

Given the information that follows, calculate the concentrations of all molecular and ionic species, and the pH in aqueous solutions
Given the information that follows, calculate the concentrations of all molecular and ionic species, and the pH in aqueous solution.A) 0.01M acetic acid B) 0.25M ammonium chloride I don't even know... more
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Biochemistry Chemistry

08/26/22

Calculate the pH of an aqueous solution of the following:
2 x 10^-8 M KOHSo, for this I am getting the -log(2x10^-8) and I am getting 7.69 but the answer is suppose to be 7.1?Could anyone show how they get to the correct answer? I think I am doing... more
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08/20/22

CHEMISTRY UNCERTAINTY
what is the uncertainty of these measurementswrite as +/- the number and the unit1) 1.O569g _____2) 7.56mL _______3) 1.815cm _______
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08/20/22

Chemistry uncertainty and sig figs
can anyone help me with this1) which number if the measure value is 8.4I26, which of the numbers has uncertainty2) if the scale division 0.1 unit, and the measurement values at 3.2 units, how do u... more
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08/08/22

On Friday, March 11, 2011, Japan was hit with an earthquake that measured 8.9 (Please help me with this)
Shortly thereafter, a 13 foot wall of water engulfed the coastal villages and towns. The Fukushima Daichi nuclear power plant, which consists of 6 reactors, was built to withstand the earthquake.... more
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08/08/22

On Friday, March 11, 2011, Japan was hit with an earthquake that measured 8.9 (Please help me with this)
Shortly thereafter, a 13 foot wall of water engulfed the coastal villages and towns. The Fukushima Daichi nuclear power plant, which consists of 6 reactors, was built to withstand the earthquake.... more
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Biochemistry Biology Chemistry

07/17/22

Calculate the total number of moles of particles (Na+ and Cl-) in the evaporating dish?
Info:Molar Mass of NaCl = 58.44gMass of NaCl solution = 1.478gSolution = 0.9% NaCl per 100 mLMolarity of Saturated NaCl Solution = 2.526 Mol/L Questions: 1) Calculate the total number of moles of... more
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Biochemistry Chemistry

07/16/22

What is the reason behind the weak binding efficiency of the 𝜎 − subunit of the RNA polymerase in RNA synthesis?

Please choose the answer from the following choices:A. A weak binding efficiency has importance in the dissociation of the polymerase into recyclable components for further transcription B. A weak... more
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07/16/22

What will be the hybridization of a carbon atom that is singly bonded to another carbon while being doubly bonded to an oxygen atom?
Please choose the answer from the following choices below:A. This carbon will have an sp3 hybridizationB. This carbon will have an sp2 hybridizationC. This carbon will have an sp hybridizationD.... more
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07/16/22

What is the molecule responsible for making sure that the DNA doesn’t supercoil during replication?

Please choose the answer from the following choices below:A. LigaseB. GyraseC. HelicaseD. PrimaseNote: Please provide an explanation if you can.
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Biochemistry Science Biology

07/15/22

Differences between Bryophyte life cycle and Angiosperm

A) List the two differences between the life cycle of an angiosperm and that of a bryophyteB) How has each difference affected the relative success of these two groups on land?
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Biochemistry Math Chemistry

07/10/22

I need help with this problem I'm getting the wrong answers when doing the quadratic formula
Keq = 3.143x10-5 for the reaction below:NH2CH2COOH(aq) + C2H5OH(aq) <--> NH2CH2COOC2H5(aq) + H2O(l)So if you were to combine 5.171g of NH2CH2COOH and 8.167g of C2H5OH inenough water to make... more
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Biochemistry Math Chemistry

07/10/22

I need help with solving this problem?
Old bottle of phosphoric acid that is labelled “0.6829M”.a. A standardized bottle of sodium hydroxide with a known concentration of 0.8573M. How many milliliters of this NaOH solution should be... more
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Biochemistry Math Chemistry

07/06/22

how do you solve this??
Keq = 3.143x10-5 for the reaction below:NH2CH2COOH(aq) + C2H5OH(aq) <--> NH2CH2COOC2H5(aq) + H2O(l)So if you were to combine 5.171g of NH2CH2COOH and 8.167g of C2H5OH in enough water to make... more
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Biochemistry Math Chemistry

07/05/22

Help me solve this!!
The following are experiments performed at 28.36°C:Exp’t # [feldomite]initial [anicium]initial [dolomide]initial Rate initial (M/second)1 0.963 ... more
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Biochemistry Math Chemistry

07/05/22

Help me solve this problem!!!
The following are experiments performed at 85.37°C:Exp’t # [F2]initial [Cl2]initial [Br2]initial Rate initial (M/second)1. 0.363 0.294 0.312 ... more
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