1,698 Answered Questions for the topic biochemistry

04/10/24

Dilutions in an assay

HelloI'm confused on why we have to dilute our samples? like what is the purpose other than making sure its in the range of a spectrometer? How do dilutions help us find the concentration of... more
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Biochemistry Biology Biology

04/01/24

Biology question help
I would like to get help for all three question including image of the drawing for each questions or video1,) Draw a prokaryote cell and a eukaryote cell. Label the structure that is used to... more
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Biochemistry Chemistry

03/23/24

Calculate αY4- at the pH value 3.70 and pH value 10.15
EDTA is a hexaprotic system with the pKa values: pKa1= 0.00, pKa2= 1.50, pKa3= 2.00, pKa4=2.69. pKa5= 6.13, pKa6=10.37.The distribution of the various protinated forms of EDTA will therefore vary... more
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Biochemistry

03/21/24

osmolarity and tonicity

can someone please explain to me how to answer these questions (including working out) i am so lost1 - What is the Tonicity of a solution of 0.28 M Urea compared to the tonicity of a Red Blood... more
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03/10/24

Calculate the molarity of the hypochlorite ion OCL- provided.
The mass of NaOCL added is 0.651 gramsthe density given is 1.08g/mltemperture 22C6% W/V (weight/volume)only 1mL of NaOCL as added to 5mL of EB solution (erythrosin B)
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Biochemistry Chemistry

02/17/24

Calculate the volume in mL of a 0.250 M KOH solution that should be added to 5.250g of HEPES (MW=238.306g/mol and pKa=7.56) to give pH of 7.88
Calculate the volume in mL of a 0.250 M KOH solution that should be added to 5.250g of HEPES (MW=238.306g/mol and pKa=7.56) to give pH of 7.88.KOH volume = mL
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Biochemistry Chemistry

02/17/24

You are asked to prepare 500mL 0.100M acetate buffer using only pure acetic acid (MW= 60.05g/mol and pKa= 4.76), 3.00 M NaOH and water

You are asked to prepare 500mL 0.100M acetate buffer using only pure acetic acid (MW= 60.05g/mol and pKa= 4.76), 3.00 M NaOH and waterWhat volume of 3.00 M NaOH must be added to the acetic acid to... more
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Biochemistry Chemistry

02/17/24

What is the fraction of association?
What is the fraction of association for each potassium propionate solution? The Ka of propanoic acid is 1.34 x 10^-52.00 x 10^-1 M K(C2H5COO2) = ?2.00 x 10^-2 M K(C2H5COO2) = ?2.00 x... more
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Biochemistry Chemistry

02/16/24

Determine the molar solubility (S) of Zn(CN)2
Determine the molar solubility (S) of Zn(CN)2 in a solution with a pH= 5.53. Ignore activities. The Ksp for Zn(CN)2 is 3.0 x 10^-16. The Ka for HCN is 6.2 x 10^10. please help thank you!
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Biochemistry Chemistry

02/16/24

Complete the mass balance expression for a saturated solution of Ag2CO3. Ignore any subsequent reactions of Ag+.
Please help!
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Biochemistry Chemistry

02/11/24

What is the silver ion concentration in a solution prepared by mixing 341 mL 0.388 M silver nitrate with 375 mL 0.506 M sodium chromate? The Ksp of silver chromate is 1.2*10^-12

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Biochemistry Chemistry

02/11/24

What is the concentration of Ca2+ in this solution if [OH-] is fixed at 3.00*10^-4 M?
Hydroxyapatite, Ca10(PO4)6(OH)2 has a solubility constant of Ksp= 2.34*10^-59 and dissociates according to:Ca10(PO4)6(OH)2 (s)—> 10Ca 2+ (aq) + 6PO4 3- (aq) + 2 OH- (aq). Solid hydroxyapatite is... more
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Biochemistry

02/04/24

Which pathway takes place during aerobic/anaerobic to produce ATP?
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Biochemistry Organic Chemistry

01/29/24

Balancing redox equation
I need help setting up the equations and explanation for the answer!!Balance the oxidation and reduction half reactions for the complete oxidation of C3H4O3. Then show the overall balanced... more
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Biochemistry

01/29/24

List the fatty acids in order of increasing melting points. A. Linoleic acid B. α-Linolenic acid C. Oleic acid D. Stearic acid * where would you expect 18:1 trans fatty acid to fall in this list?
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01/28/24

Ascorbic acid in vitamin c tablet
We are doing a lab about vitamin C and titration of it. I have questions regarding this but the second question threw me off by asking for the moles of ascorbic acid in the erlenmeyer flask.What am... more
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Biochemistry

01/24/24

question for biochemistry in college
alls given is' when their is a lack of oxaloacetate what is acetyl- coA transformed into' sample question for our final exam if you could please help me!
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Biochemistry Chemistry Physics Usmle

01/02/24

An ________ particle is a helium nucleus, consisting of 2 protons and 2 neutrons (without the electrons).
Fill in the statement:An ________ particle is a helium nucleus, consisting of 2 protons and 2 neutrons (without the electrons).A. BetaB. AlphaC. OmegaD. Positron
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01/02/24

What is the rate-limiting enzyme in glycolysis? Does an incease in glycolysis lead to an increase or decrease in the overall glucose metabolism?

What is the rate-limiting enzyme in glycolysis and does an increase in glycolysis lead to an increase or decrease in the overall glucose metabolism? A. Phosphoglucose Isomerase, DecreaseB.... more
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Biochemistry Biology Anatomy Physiology

01/02/24

A 26-year-old male presents to the emergency room after sustaining injuries.........Which hormones would most likely be affected by this condition?
A 26-year-old male presents to the emergency room after sustaining injuries from a motor vehicle accident. Patient has a contusion on his forehead, complains of a "throbbing" headache, and is... more
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12/16/23

How many chloramphenicol capsules, each containing 250 mg of chloramphenicol are needed to provide 50 mg/kg body weight per day for 1 week for a person weighing 150 lbs.
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Biochemistry

12/05/23

I dont know How to do the carbonate cycle
How do I Build Reaction Path Model for Open Carbonate System
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Biochemistry Biology Calculus Physics

11/26/23

Two parallel wires question
Two parallel wires separated by 4.0 cm repel each other with a force per unit length 2.0 × 10-4 N/m. The current in one wire is 5.0 A. (a) Find the current in the other wire. (b) Are the currents... more
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Biochemistry Science Biology Calculus

11/26/23

Parallel Wires Question Physics
Two long, parallel wires separated by 2.50 cm carry in opposite directions. The current in on wire is 1.25 A, and the current in the other is 3.50 A. (a) Find the magnitude of the force per unit... more
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Biochemistry Math Biology Calculus

11/26/23

Magnetic Field Question
A laboratory electromagnet produces a magnetic field of magnitude 1.50 T. A proton moves through this field with a speed of 6.00 × 106 m/s. (a) Find the magnitude of the maximum magnetic force that... more
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