1,698 Answered Questions for the topic biochemistry

10/16/19

AP Chemistry Question
Which of the following ions has the same number of electrons as Br -. A. Ca2+B. K+C. Sr2+D I-E Cl-
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Biochemistry Biology Chemistry

10/16/19

Is it possible to chemically synthesize blood?
Like we know all the chemical compositions of blood and add the ingredients. We even know the compositions of each blood group and synthesize it to be of a particular group, say A - (which is... more
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Biochemistry Biology Chemistry

10/03/19

Why does biological tissue shrink in ethanol?

Moving aldehyde-fixed biological tissue (in my case, 200um thickness mouse brain slices) from water to ethanol shrinks them considerably, even when transitioning slowly. I know that ethanol moves... more
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Biochemistry Chemistry

09/23/19

CHEMISTRY stoichiometry and moles and combustion problem

Methanol has the chemical formula CH3OH. If 4 moles of methanol are combusted, how many moles of oxygen will be consumed? a- 2molb- 3 molc- 4 mold- 6 mole- not enough information
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Biochemistry

09/17/19

The pH of the titration should plateau at a pH above_______
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09/15/19

Molecules and Formula unit
some times we are asked to write the equation in particles form. I was wondering what is the difference between molecules and formula unit cause google didn't help.
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09/09/19

Specific heat for Chemistry

A 121 g piece of metal is heated to 282 degree Celsius and dropped into a 85.0 gram of water at 26.0 degree Celsius. If the final temperature of water and metal is 58.4 degree Celsius, what is the... more
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09/04/19

How much of each do we add? - DNA Extraction Buffer
We are given: 50 mls of DNA extraction buffer2% SDS,   100mM tris pH 8,     10mM EDTA,    and proteinase K [1 ug/ml] How much of each do we add?
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08/30/19

What is the mechanism behind “acquired” alcohol tolerance?
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Biochemistry

08/29/19

Solve each of the following problems using one or more conversion factors: A container holds 0.470 qt of liquid. How many milliliters of lemonade will it hold?
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Biochemistry

08/28/19

How many milliliters of gasoline have a mass of 1.0 kg (D=0.74g/mL)?
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Biochemistry

08/27/19

Convert 5.5×1010 picoseconds to seconds.

Perform each of the following conversions using metric conversion factors.
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08/27/19

What is the best way to go about solving chemistry problems?
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Biochemistry Chemistry Mcat

08/08/19

What is the net ionic equation?
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08/05/19

Can I kill bacteria with distilled water?
Given that bacteria are hypertonic (contain more salts) compared to distilled water, and that they rely on ion concentration differences across the plasma membrane to survive, can I kill a... more
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08/05/19

Are quaternary protein monomers unique to a particular protein complex?
I know that quaternary protein structures are formed exclusively via non-covalent bonds. My biochemistry professor discussed a viral capsid that is essentially one quaternary structure with 240... more
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Biochemistry Temperature Sensation Taste

08/04/19

Cold water sour taste?
Recently I underwent a wisdom tooth extraction, and while there is still numbness I have observed something peculiar. If I drink cold water, it tastes sour, however the same effect is not observed... more
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08/02/19

What if I can’t achieve a bachelor’s in Biology?? Help
Listen, I have wanted to go into the medical field my whole life. I know I will thrive in healthcare and that it is what I want to do; however, my issue is that I struggled with every single... more
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Biochemistry

07/31/19

A 200 ppm protein solution is diluted 1:10. What is the concentration of the diluted solution in mg/ml and μg/100 ml?
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Biochemistry

07/31/19

A 100ml soulution contains 8g of NaOH ( molecular weight 40g/mole). What is the concentration of this solution in g% and molarity?
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07/31/19

Can PCR tubes be made of different materials than plastic?
Does it matter if I replace the PCR tube (usually made of plastic) with another material like aluminum, glass, or something similar?
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07/30/19

Besides hemoglobin, what proteins are present in red blood cells?
I knew that mature red blood cells (RBCs) lacked nuclei, but I wasn't aware until just now that they also lacked ribosomes and mitochondria. Most cells in the human body all contain a common... more
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Biochemistry Dna

07/29/19

Basic Amino Acid Residue Binding Mechanism to DNA?
I understand that many protein DNA binding domains bind to DNA via basic residues such as Arginine and Lysine. But what is the mechanism used to bind to DNA and where on the DNA would these... more
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Biochemistry Metabolism

07/29/19

Cellular demand for antioxidants?
Antioxidants such as ascorbate and glutathione serve to inactivate radicals and counteract spontaneous oxidation reactions, such as unwanted disulfide bonds in proteins. These systems are cycles,... more
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Biochemistry Metabolism Respiration

07/29/19

About acetyl-coA in the Krebs Cycle of respiration?
In respiration, Krebs cycle starts with acetyl coenzyme A which is made from pyruvate. However, it is said that the cycle keeps repeat it self with oxaloacetate turning back to citrate and cycle... more
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