The study of chemistry within the scope of biology: the compounds that occur and the reactions involving them in living organisms.

learn more… | top users | synonyms

0
votes
1answer
136 views

How do you remove DNA/RNA from plastics?

I want to know how to make plastic containers free of DNA & RNA? this is just for knowledge
0
votes
1answer
315 views

Definition of Dye- Reduction Test?

Can some one give a simple explanation or definition on what a dye-reduction test is.
0
votes
0answers
9 views

To Study Interactions of two molecules in PubChem

Assume you have two substances Diosminum / Hesperidinum. The former strengthens vascular walls. The latter has role in some glycoside biosynthesis. From Biochemistry, I recall that glycodises have ...
0
votes
0answers
12 views

Bacterial/microbial metabolism of sucrose in fruit juices

While taking out the recycling this morning, I noticed that my old orange juice carton seemed to be inflated. Opening the cap relieved a lot of pressure built up inside the carton. I'm thinking that ...
0
votes
0answers
13 views

Substrate specificities of GPPS, FPPS and GGPPS (isoprenoid biosynthesis enzymes)

I have some questions related to isoprenoid synthesis enzymes. Does Geranylgeranyl pyrophosphate synthase (GGPPS) contribute in Geranyl-Pyrophosphate (GPP), Farnesyl pyrophosphate (FPP) and ...
0
votes
1answer
37 views

Book-recommendation: Biochemistry

I need to have a book which covers following topics two may also be fine: (a) Structure and role of carbohydrates, fats, fatty acids and cholesterol, proteins and amino-acids, nucleic acids. ...
0
votes
0answers
21 views

Is there a known glucosepane cross-link breaker?

I read the following on wikipedia: There is, however, no agent known that can break down the most common AGE, glucosepane, which appears 10 to 1,000 times more common in human tissue than any ...
0
votes
0answers
17 views

Formaldehyde turns plantar region of feet red?

I'm a freshman med student and I've noticed that on all the feet (and hands) of deceased people that I've worked with, the bottom of the feet always turns red and also the inside of the palm? Why is ...
0
votes
0answers
17 views

Sequence based method for prediction of continuous B cell epitope

What is Sequence based method for prediction of continuous B cell epitope? What is the algorithm/procedure of this method? Can someone please explain this to me in simple language?
0
votes
0answers
16 views

Immunomic Microarray

"One can measure two or more signals simultaneously determined by a single feature, i.e., epitope in immunomic microarray DNA microarrays measure one response value for each gene per sample; that ...
0
votes
0answers
23 views

MHC restricted peptide

What is an MHC restricted peptide? "MHC-restricted antigen recognition, or MHC restriction, refers to the fact that a given T cell will recognize a peptide antigen only when it is bound to a host ...
0
votes
0answers
26 views

Results of fermenting bakers yeast, Sugar and different categories of fruit peels

Based on this recipe I made three Jars of the fermented solution each containing: Papaya Peels Lemon+ Pomegranate peels Pineapple Peels In addition to above recipe I added 1 large tbsp of ...
0
votes
0answers
45 views

Poly Unsaturated Fatty Acid

PUFAs spontaneously oxidize, speed up the process of glycation, since too much glucose and they also decrease mitochondrial respiration - more oxygen and CO₂, less lactate and PUFA also promote ...
0
votes
0answers
32 views

What chemical form of vitamin A is in chicken's egg yolk?

After doing some existing background research I am confused as to exactly what, in an unfertilised chicken egg's yolk, offers what we intake as 'Vitamin A' upon eating it. Plants typically produce ...
0
votes
0answers
34 views

What causes the odor when a container is sealed with moisture inside?

I'm not sure if this is a biology or chemistry question since I don't know the cause of it (though I think it is bacteria or fungal related). I'm just wondering what creates that awful odor when a ...
0
votes
0answers
30 views

Few innervations to blood sugar regulation

Assume you have a case of young female where the intake of 75 grams of pure sugar leads to a rapid peak of blood glucose level (within seconds) plateau phase with very steady blood glucose level ...
0
votes
0answers
53 views

Early versions of the biochemical pathways wall chart. Where have they gone?

A lot of them in the bin as new versions were released, I imagine. I have been looking for early versions of the wall chart, but I've largely come up empty handed. I did find that besides the ...
0
votes
0answers
14 views

To increase the stretchability of the ascending aortic arch

The thread about To decrease the amount of proteins in the lymphatic drainage for short term here raised this question. This paper discusses the stretch and Cauchy-stress properties of the heart. So ...
0
votes
2answers
50 views

Why is succinate dehydrogenase attached to the inner mitochondrial membrane?

Succinate dehydrogenase is attached to the inner mitochondrial membrane.All the other enzymes of the Krebs cycle are located in the matrix of mitochondria. What is the biochemical reason behind ...
0
votes
0answers
12 views

To understand synthesis of e-NOS and n-NOS with respect to Ca and calmodulin

I found this sentence in my notes interesting E-NOS and n-NOS are Ca, calmoduline dependant ferments. They are synthesized from in small conc as response to physiological signals which ...
0
votes
0answers
41 views

To understand Nitric oxide, iNOS and Tumour cells

I have this figure about nitric oxide and tumor which is for schematic for me to understand it The figure should probably say that tumour cell is induced by NO or alone to go apoptosis and it ...
0
votes
0answers
21 views

Does amylolysis occur in vegetables if stored under 0 Celsius?

Assume that we have a plant, e.g. kale, which is prone to amylolysis if not harvested during a frost period. If it is harvested and put in a household freezer, such that it is frozen solid slowly ...
0
votes
0answers
40 views

Why black plum has a smell so much resembling tobacco? [on hold]

Why black plum has a smell so much resembling tobacco? What substance does determine it? Can it be used for tobacco replacement?
0
votes
0answers
47 views

Where can I find complete description of the nucleotide biosynthesis? [on hold]

I'm looking for a good source for learning nucleotide biosynthesis pathway (including enzymes and possibly also structural formulas) - what is the best source I could find such pathway, presented in a ...
0
votes
0answers
50 views

Domains in cell membrane

How is movement of proteins and lipids between different domains of cell membrane prevented? Why is the noncytosolic layer not able to do lateral movements between domains but cytosolic layer is able ...
0
votes
1answer
52 views

Carotenoid biosynthesis in yeast

Does Budding Yeast Sacchromyces cerevisiae produces significant amount of carotenoids? Have anybody estimated the ratio of flux going in branches 1. Cholesterol synthesis(via squalene) 2. Coenzyme Q6 ...
0
votes
1answer
457 views

Amino acid characteristics that determine their chemical properties?

What chemical aspect of amino acids results in their having different properties such that the chemical and physical properties of polypeptides vary with both amino acid content and amino acid order? ...
0
votes
0answers
246 views

Relationship between biomass and net primary productivity [on hold]

I want to do validation on simulated net primary productivity. But I don't have measured NPP data, Eddy covariance flux measurement data. I have only field measurement biomass data. So can I directly ...
0
votes
0answers
112 views

How do cells slowly degrade 5,5'-dibromo-4,4'-dichloro-indigo?

5,5'-dibromo-4,4'-dichloro-indigo is the product of X-gal cleavage, often used as a reporter with B-galactosidase. I've made the (unreferenced) observation that it seems as though the blue product ...
-1
votes
2answers
88 views

PAH gene mutation

Analysis of the DNA of the Phenylalanine hydroxylase (PAH) gene in a patient with phenylketonuria revealed a mutation in the protein coding region whose predicted effect would be to replace the amino ...
-1
votes
1answer
71 views

What organism most efficiently converts a given quantity of mass into heat?

Question I am trying to answer: In the popular film The Matrix, heat given off by humans is harvested as an energy source. I wondered, if this were possible, would humans be a good organism to ...
-1
votes
1answer
55 views

Bilayer synthesis? [closed]

If we want to design a bilayer from Myristic acid (14 carbon fatty acid). The average bond length between C-C is 1.5 A. What will be average thickness of the membrane? Edited to include the OP ...
-2
votes
1answer
43 views

What is hTAP?? Please help

Could not find a single article regarding this. What is hTAP? Tap is Transfer associated protein, that I know, but what is hTAP??(I have not studied biology since last 8 years and now I am going ...
-2
votes
1answer
35 views

Affinity isolated peptide

What is affinity isolated peptides??(I have not studied biology since last 8 years and now I am going through it because I need it for my research. So if someone can describe it in simple language it ...
-2
votes
1answer
87 views

Good place to ask health based questions? [closed]

I like the development of biology.stackexchange.com, but it is still in an early stage and far from perfection. While we develop it further, could you guys help me finding places to ask questions ...
-2
votes
0answers
21 views

Meta-analysis for the Biochemistry of Water filtering systems? [on hold]

I am trying to find meta-analysis and US government's official websites about water filtering and recommendations. The selection of the system is dependent on the quality of the water. So you can ...
-4
votes
2answers
73 views

How are atoms created? [closed]

From small baby to the old age, we will be grown. We are composed of bunch of atoms, multitude of atoms. When you are grown from baby to the teen age, everyone will say "he has grown!" What do you ...
-4
votes
4answers
167 views

Are biological systems engineered? They are often reverse engineered at a molecular level!!

Understanding biological systems, molecular biologists need to “reverse engineer” them. Is this evidence that the systems were engineered to begin with?