1,708 Answered Questions for the topic biochemistry

09/16/20

What is the minimum mass of magnetite Fe3O4, a iron ore, from which 7.5kg of pure iron could be extracted?
What is the minimum mass of magnetite Fe3O4, a iron ore, from which 7.5kg of pure iron could be extracted?Be sure your answer has a unit symbol, if necessary, and is rounded to the correct number... more
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09/16/20

Iron(II) sulfate forms several hydrates with the general formula FeSO4 ·x H2O, where x is an integer. If the hydrate is heated, the water can be driven off, leaving pure FeSO4 behind.
Iron(II) sulfate forms several hydrates with the general formula FeSO4 ·x H2O, where x is an integer. If the hydrate is heated, the water can be driven off, leaving pure FeSO4 behind.Suppose a... more
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09/16/20

What is the maximum mass of pure gold that could be extracted from 150.g of calaverite, a gold ore with the chemical formula AuTe2
What is the maximum mass of pure gold that could be extracted from 150.g of calaverite, a gold ore with the chemical formula AuTe2Be sure your answer has a unit symbol, if necessary, and is rounded... more
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09/16/20

Calculate the mass of hydrazine (N2H4) that contains a trillion (1.000 * 10^12) hydrogen atoms:
Calculate the mass of hydrazine (N2H4) that contains a trillion (1.000 * 10^12) hydrogen atoms.Be sure your answer has a unit symbol if necessary, and round it to 4 significant digits.
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Biochemistry Biology Organic Chemistry

09/09/20

Is there an enzyme that functions without being associated with a complex?
I'm looking for an enzyme that does not function as part of a complex in its active state. Preferably it also is not part of a kinase or other kind of activating cascade as well though I would... more
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Biochemistry Biophysics

09/03/20

Are chromosomes soluble when they are condensed?
DNA is soluble, but are chromosomes still dissolved in the aqueous phase when they are condensed during cell division?
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Biochemistry Math Science Biology

08/30/20

Label The diagram A ⮂ B+C

A ⮂ B+Ca. Reactant (substrate) for hydrolysisb. Products of hydrolysisc. Reactants for synthesisd. Product of synthesis
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Biochemistry Biology Chemistry Anatomy

08/29/20

Label the reversible chemical reaction diagram 
A ⮂ B+Ca. Reactant (substrate) for hydrolysisb. Products of hydrolysisc. Reactants for synthesisd. Product of synthesis
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Biochemistry

08/29/20

What contains and stores the cell's heredatary material?s?
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Biochemistry

08/29/20

A sample of metal has a mass of 23.40 g, and a volume of 5.60 mL. What is the density of t
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08/26/20

What is the condensed formula of 3-ethylheptane ?
Please write the condensed formula of 3-ethylheptane in one line.
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Biochemistry Chemistry

08/26/20

Calculating mass of BSA
Calculate the amount (mass) of BSA (50mg/ml concentration) needed to make 500 ml of 1mg/ml BSA solution.
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Biochemistry Biology Organic Chemistry

08/18/20

What is the use of discolouring carbon/activated charcoal in the extraction of lactose from milk?

I get that activated charcoal is used to decolourise the solution but I want to know why we need to decolorize the solution.
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Biochemistry

08/15/20

Statins are used to decrease cholesterol amounts in the body. What enzyme of the cholesterol biosynthesis pathway do these drugs inhibit?
Explain what enzyme is affected in the cholesterol biosynthesis pathway.
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Biochemistry

08/02/20

Calculate the volume of concentrated HCl needed to prepare 250 mL of 0.1M HCl. (Concentrated HCl has a density of 1.188 g mL–1 and is 37 wt %).
can anyone please help me with this question, I have tried it I got volume= 0.8 M
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08/02/20

Intracellular signaling pathways that are participating in protein sorting and membrane traffic
Hi!I am studying biotechnology. Now I'm doing a course of Molecular biology of the Cell, and one of my tasks is to write an essay about "Intracellular signaling pathways". This essay topic is very... more
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Biochemistry

08/01/20

1.Calculate the mass of sodium hydroxide needed to be weighed to prepare 500 ml of a 0.1 M NaOH solution ?

2. The NaOH solution in question 1, was prepared. It’s then standardized by titrating it against 0.5688g of potassium acid phthalate, which is a primary standard acidic substance (KHP = molar mass... more
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07/30/20

HELP FAST - question on reductive amination
What molecule results from treating 4-oxopentanal with NH4Cl and NaCNBH3? Why? Is this a good, high yield reaction?
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Biochemistry Biology

07/24/20

Explain the metabolic pathways of Cytochromes P450 to lipid lowering agents and grapefruit and acetaminophen and grapefruit
Explain metabolic pathways of Cytochrome 450 to a. lipid lowering agents and grapefruit and b. Acetaminophen and grapefruit Identify the several effects to the human body when these enzymes are... more
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07/23/20

18. NEED HELP FAST

Calculate the cell potential for the galvanic cell in which the given reaction occurs at 25 °C, given that  [Zn2+]=0.00100 M  and  [Au3+]=0.871 M . Standard reduction potentials can be found in... more
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07/23/20

17. NEED HELP FAST

The voltage generated by the zinc concentration cell described by the line notationZn(s) ∣ Zn2+(aq,0.100 M) ‖ Zn2+(aq,? M) ∣ Zn(s)is  19.0 mV  at  25 °C.  Calculate the concentration of... more
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07/23/20

16. NEED HELP FAST

Write the net cell equation for this electrochemical cell. Phases are optional. Do not include the concentrations.Cu(s)∣Cu2+(aq, 0.0155 M)‖Ag+(aq, 3.50 M)∣Ag(s)net cell equation:Calculate  𝐸∘cell... more
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07/23/20

19. NEED HELP FAST

For the aqueous reactiondihydroxyacetone phosphate↽−−⇀glyceraldehyde−3−phosphatethe standard change in Gibbs free energy is  Δ𝐺°′=7.53 kJ/mol . Calculate  Δ𝐺  for this reaction at  298... more
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07/23/20

18. NEED HELP FAST

At  25 ∘C , the equilibrium partial pressures for the reaction3A(g)+4B(g)↽−−⇀2C(g)+2D(g)were found to be  𝑃A=5.87  atm,  𝑃B=4.85  atm,  𝑃C=4.79  atm, and  𝑃D=4.93  atm.What is the standard change... more
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07/23/20

17. NEED HELP FAST

The decomposition of a generic diatomic element in its standard state is represented by the equation12X2(g)⟶X(g)Assume that the standard molar Gibbs energy of formation of X(g) is  5.77... more
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