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1answer
48 views

Evolution & Celluar Chemistry [closed]

I'm new to this site but had a question on evolution, apologies if some of these questions seem basic but they are from a book i am reading challenging the role of chance in evolution. Taking the ...
0
votes
0answers
15 views

What proteins are required to synthesize gyromitrin?

This is something I was interested in, from reading about false morels that produce gyromitrin which is hydrolyzed to form monomethylhydrazine. I was wondering about the biological process that ...
1
vote
1answer
70 views

Can soap kill cockroaches and/or ants? If so, how? [duplicate]

Is it possible to use dishwashing soap as an alternative insecticide? How would that and what are the components of the dishwashing soap that would kill the insect?
0
votes
1answer
71 views

Why is the swelling of bread when placed in water not considered to be caused by osmosis? [closed]

Why is bread swelling up when placed in water not considered to be caused by osmosis? Is there a property of water that should make it leave the bread instead of enter?
0
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2answers
71 views

In what two ways is ATP used in coupled reactions?

I already have down "A coupled reaction is when leftover energy from a reaction fuels a reaction that needs more energy. ATP can break apart to transform into something new and use the energy created ...
3
votes
1answer
64 views

Is there a difference between Luria Broth and Lysogeny Broth?

Is there a difference between Luria Bertani and Luria Broth? Or are they both the same thing? Is it necessary to autoclave LB medium after it has been made?
-5
votes
1answer
173 views

Why are plants classified in living things? [closed]

@Volunteers Beware that I am none of the biological magnates. Nor a philosopher. This is just a sign of curiosity. And, I want only an intuition that enables me to see the difference. As far as I ...
2
votes
1answer
66 views

Are there differences in energy of glucose isomers?

There are many isomers of glucose, including galactose and fructose. Do they have different chemical energy levels, and why? What makes galactose and fructose useful compared to glucose, and would ...
0
votes
0answers
15 views

Avoid Blood lyse color remain in DNA extraction

I tryed several times to extract DNA from freezed blood sample whit Qiagene kit but it gave very small amount of product due to good purity then I try extract manually by using CTAB PVP method and ...
2
votes
1answer
85 views

How to calculate the Jaccard index [closed]

I want to calculate the Jaccard index between two compounds. What is the algorithm? I have searched for it, it just gives the formula but how to apply it on compounds is not known to me. Can you help? ...
0
votes
1answer
56 views

What are these pathways called in Biology?

Considering the pentose phosphate pathway and the sulfate reduction pathway in bacteria; What are these types of reactions called in biology? Bio degradation reactions or bio transformation reactions ...
0
votes
1answer
29 views

Factors on which one compound transforming to another compound depend [closed]

Considering the Metabolic Pathway: http://www.genome.jp/kegg-bin/show_module?M00166 Consider the reaction R01523(the very first reaction). How is it possible to know that the compound ...
3
votes
1answer
28 views

Question related to L-arginine biosynthesis

With respect to the L-arginine Biosynthesis pathway, the very first reaction converts L-glutamate to N-acetyl L-glutamate. In the linked reaction scheme, why are only L-glutamate and N-acetyl ...
2
votes
1answer
40 views

Question regarding an Escherichia coli reaction

With respect to this link http://www.biocyc.org/ECOLI/NEW-IMAGE?type=REACTION&object=RXN-14479 Here the enzyme is mentioned and the two reacting compounds. Now , my question is 1. When these ...
4
votes
2answers
193 views

Do acetyl-CoA, acetyl-CoA carboxylase and acetyl-glutamate carry any charge?

Do the following compounds have any charge? If not, then why? If yes, is there any database that would give me this information if the compound is negatively or positively charged? The compounds are ...
7
votes
1answer
1k views

What produces the strong odor of decaying dead animals?

Are there specific chemicals responsible for producing the strong, putrid odor that is present after an animal deceases? Also, how long does this odor last?
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0answers
18 views

Can I use my extech pH60 meter to measure soil pH if so how? I included a link to the meter [closed]

Can I use my extech pH60 meter to measure soil pH if so how? I included a link to the meter. Extech pH 60
4
votes
1answer
30 views

What's the maximum pressure inside a bombardier beetle?

This question got me wondering about the pressure inside a bombardier beetle. Lots of articles mention pressure, but don't specify the amount of it: One study records the velocity of the spray to ...
1
vote
0answers
28 views

Why is carbonylation added as a fixed modification in mass spectrometry peptide analysis?

When using mass spectrometry analysis software we use carbonylation as a fixed modification. What is the significance of this modification and why doesn't it change?
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votes
2answers
3k views

Just how dangerous is ethidium bromide?

A common precaution for preparing EtBr-agarose gels is to add EtBr only after the gel solution has cooled somewhat, because EtBr is a dangerous mutagen. Supposedly, adding it to a hot liquid allows ...
2
votes
1answer
245 views

Fatty Acid Synthesis

I have a problem in my reasoning on the fatty acid synthesis in the human body. In the synthesis process you have this homodimer. So the synthesis starts with the transfer of a acetyl group from ...
5
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2answers
3k views

What makes teeth feel sticky after drinking Coca-Cola?

I asked some of my friends and we all agree that teeth feel funny after drinking Coca-Cola. Other similar soft drinks also cause this effect, but this one most noticeably. It's like teeth become ...
0
votes
1answer
63 views

Why prefer $MgSO_4$ over $MgCl_2$ in recipies [closed]

Many molecular biology recipes use MgSO4 (and not MgCl2). Is there indeed a preference? If so, why?
3
votes
1answer
121 views

How do fish tolerate pH changes in water?

I want to know how aquatic animals behave as a natural indicator of the acidity in lakes and rivers. How do they tolerate these pH change?
2
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1answer
125 views

How Do Acid and Base Loving Plants Get Enough PO4?

Acidic and Basic soils experience phosphate sequestration through binding with either calcium, aluminum, or iron. How do plant that thrive in acidic and basic soils obtain the necessary phosphate? ...