444 Answered Questions for the topic biochemistry

01/10/20

Hydrogencarbonate

Sherbet lemons are sweets which consist of a flavoured sugar shell filled with sherbet. The sherbet contains sodium hydrogencarbonate, NaHCO3 and tartaric acid (2,3- dihydroxybutanedioic... more

01/10/20

The simplest carboxylic acid is methanoic acid HCOOH. It occurs naturally in ants.

The simplest carboxylic acid is methanoic acid HCOOH. It occurs naturally in ants.When an ant bites, it injects a solution containing 50% by volume of methanoic acid. A typical ant may inject... more

01/04/20

A gas has a density of 0.791 g/L. What is the molar mass of this gas?

I wonder why the formula is m (mass) = p x V (density multiply with volume)But the answer key of the book is: Molar Mass (M) = g/L × 22.4 L/1 mole = p x VSO , in this situation , do we find mass =... more

12/29/19

I need help with understanding structural activity relationship of modified compounds.

I synthesized peptoid or mimics of Wollamide a TB antibiotic. I’m seeking to determine the structural activity relationship and understand stereochemistry of each compound. I need to know what’s... more

12/22/19

I need help with a mix of microbiology/biochem/pharma/stereochem, see details below.

Hello, I need help with a mix of microbiology/biochem/pharma. I did an experiment where I made mimics of TB antibiotics in a lab. I need to understand the structural activity relationship of the... more

12/20/19

To understand the structural activity relationship of a peptide drug molecule; see details below.

Hello, I need help with a mix of microbiology/biochem/chem/bio. I did an experiment where I made mimics of TB antibiotics in a lab. I need to understand the structural activity relationship of the... more

12/18/19

I need to understand the structure activity relationship of an antibiotic compound and its bioactivity

Molecule: WollamideMade analogsChanged sterechemDisk Diffusion assayB. SubitulisThe question what is the mechanism of action of Wollamide and why other analogs didnt not work or not inhibted.

12/18/19

I need to understand the structure activity relationship of an antibiotic compound and its bioactivity

Molecule: Wollamide Made analogsChanged sterechemDisk Diffusion assayB. Subitulis The question what is the mechanism of action of Wollamide and why other analogs didnt not work or not inhibted.

12/18/19

I am trying to go thrgouh this question and I need someone who is chemsity expert to try to solve this problem which is related to the contrant rates

You designed a contrast agent that incorporates folate so it can bind to folate receptors. When injected intravenously (IV), this contrast agent will mark circulating tumor cells, overexpressing... more

12/12/19

BIOCHEM Questions

which enzyme is regulated by a feedforward mechanism by its own substratePKHexokinasePFKPDHIsocitrate dehydrogenase

12/08/19

MC Questions BioChem

Hello, any help is appreciated, A botanist has discovered that the buds of a species of flower have an intensecitrus flavor, but act as a deadly poison when consumed by humans. Whichbiochemical... more

12/06/19

biochem amino acids question

which of the following tripeptides is most hydrophobic: a) gly-ser-therb) gly - val - alac)phe-val-isod)arg-lys-methe)ser-iso-leuI am leaning more towards B but I want to know the correct answer... more

12/04/19

What data does a sequencing chromatogram give??

For my lab we had to change the sequencing of Erv26 depending on our primer. We change the amino acid T69 from AAA to AUA. This is one of our figures but i am unsure how to interpret the data.

12/01/19

Biochemistry and Fatty Liver Disease

People who eat a large amount of fattening foods often develop fatty liver disease. People with fatty liver disease often have large numbers of small droplets of triglycerides throughout their... more

11/23/19

Write a note on the mechanism of detection of proteins through Lowry assay

I know this is a copper reduction reaction of Cu2+ to Cu+ but how are proteins detected?

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?

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

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

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". 

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

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

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

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

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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