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1answer
6 views

What is the difference between protein and peptide?

On which basis do protein and peptide are divided? I mean which factors differentiate them?
1
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0answers
9 views

How many different chemical substances are there (on the average) in a human cell?

How many different chemical substances are there (on the average) in a human cell? I saw of an estimation of ~ 1 billion (10^9) in sci-pop books. Is there any reliable estimation rooted in the ...
1
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0answers
16 views

Is baked meat less healthy to eat than boiled,steamed meat, or slow-cooked or fryed meat? [on hold]

Classical chinese legend says baked anything are less healthy than boiled, steamed, and fried goods. Could this because the Chinese don't have ovens in their homes until recent years?
-1
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0answers
16 views

As U.N. like orgs suggesting to consume edible insects [on hold]

Articles saying insects are rich in protein and many other useful constituents.how can this food improve our health?Can these insects be cooked deliciously?
1
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0answers
30 views

What are the sufficient criteria that make an entity a living homo sapiens? [on hold]

When I say criteria I mean like x biological functions or y genetics. If it were to be appearance,anatomy. A corpse completely looks like a man. Moreover a person who has had their 4 limbs amputated, ...
1
vote
1answer
26 views

What is a “Valid Species”?

I read in a reference book on Google Books (Biology of Termites: a Modern Synthesis, eds. Bignell, Roisin, and Lo) that the termite Heterotermes perfidus found on the South Atlantic island of St ...
-2
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0answers
13 views

Do collagen peptide molecules with a hydrophobic biolayer absorb easier into the body where needed?

Looking at two different manufacturing methods for collagen peptides: hydrolysis vs lipolyzed, I read that hydrolysis results in a hydrophobic collagen peptide molecule. While this may be quickly ...
1
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0answers
26 views

Why is sorbitol used in buffers?

Many protocols in my lab use sorbitol in buffers. For instance, in co-immunoprecipitation, we include it at a final concentration of 200 mM in our lysis buffer. I'm not entirely sure why though. I ...
2
votes
0answers
19 views

What kind of skull is this-I found it on the beach in Cape May

I am hoping someone can help identify this skull! We found it on the beach in Cape May. The skull size is about 4 inch in length. Thank you.
1
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1answer
18 views

Is this aquatic plant duckweed or something else?

This plant has been growing in my pond for quite a time now. It multiplies in large numbers rapidly. Some told me it is duckweed or is it something else?
0
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1answer
18 views

What is the difference between differentiation and phenotype switching?

I am trying to model bone remodeling process and I wonder what is the difference between phenotype switching and differentiation. I am relatively inexperienced in biology. Please explain me with ...
-1
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0answers
26 views

As large-scale sequencing projects progress do we need a new name for chromosome-scale assemblies? [on hold]

Reference-quality chromosome-scale whole-genome sequence can now be produced for a tiny fraction of the original cost of sequencing the human genome. And these new methods now make it possible to ...
5
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2answers
66 views

Will modern-day insects grow to massive size in a high-oxygen environment?

It's a reasonably well-known fact that insects grew to massive sizes due to the excessive concentration of oxygen in the prehistoric-Earth's atmosphere. If one were to try to recreate this high-...
-1
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2answers
43 views

Why does flicking a finger generate so much more force than extending it quickly?

Flicking a finger (holding it back with e.g. the thumb while building up "pressure" against the thumb, then releasing) is much more powerful than just uncurling the finger quickly. I tried to do the ...
0
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0answers
22 views

What kind of bonds are there between a Transcription Factor and its DNA binding site?

I want to know what kind of bonds are there between a Transcription Factor and its DNA binding site when the complex is created. This information will be used to determine the method for a molecular ...
1
vote
1answer
23 views

How does bacteriorhodopsin differ from the rhodopsin present in mammalian eyes?

In my high school textbook, it is written that they are similar. So, I was just curious to know about this. Thank you.
5
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0answers
35 views

What kind of fish is this white blue-stained fish?

This fish has been spotted at the Great Barrier Reef near Cairns (Queensland). I put a big effort to find it via Google but never could encounter anything similar.
2
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2answers
62 views

About the definition of ketogenic amino acid

I am studying biochemistry and have been looking at metabolic network diagrams showing the different intermediates of glycolysis and the citric acid cycle that amino acids can be converted to. I have ...
-2
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0answers
18 views

Under a 100x compound microscope, which appears bigger (longer in length) ; a Pseudomonas species or E.coli? [on hold]

Under a 100x compound microscope, which appears bigger (longer in length) ; a Pseudomonas species or E.coli? I'm trying to distinguish between the two under microscope as both appeared to be present ...
1
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2answers
23 views

How are single cells sorted in an scRNA-Seq protocol by FACS?

I am computational guy trying to understand how FACS sorting works in an scRNA-Seq protocol. About sorting single cells in each well of a 384-well plate, I have a question that would be grateful if ...
0
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0answers
30 views

Evolution of the reproductive drive?

At some point in the early earth the right mix of biochemicals combine to form to first organisms(or maybe they came on a meteor). Regardless, I would assume the original unicellular organism did not ...
0
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1answer
39 views

How fast do hummingbirds fly?

Hhhmz! A hummingbirds flew past me while I was in the garden and yet, it still managed to halt perfectly in front of a blooming flower nearest to me. Just as soon I began to wonder, how fast do ...
3
votes
1answer
68 views

Is the Amazon forest O2 and CO2 neutral?

In these days, we receive a lot of concerning news about the Amazon burning. Recently, I came across widespread claims about the production of O2 and the absorption of CO2 by the Amazon forest, ...
1
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0answers
18 views

what is the relation between protein domain and disease? [on hold]

I am computer science student, and I am interested in bioinformatics. Thus, I am just at the beginning of learning some biology concepts. I am asking about the relation between protein domains and ...
6
votes
1answer
69 views

Are there examples of animals being sexually attracted to another species more than to their own?

I just thought that from the perspective of a female domestic cat, a male bobcat probably looks like the archetype of a perfect mate. As tall, strong, muscular and mighty as it possibly gets. Clearly ...
1
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0answers
38 views

Why do I have 95% of chimpanzee's DNA, and only 2% of Neanderthal's DNA? [duplicate]

Excuse me if it is a question with a simply answer, but I don't understand these discoveries, looking a discrepancy from my unknowledge of genetics: I have 95% of Chimapanzee's DNA, and, I have [...
0
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0answers
23 views

Feasibility to do genome sequencing by only single person [on hold]

I found many papers about genome sequences study from various organisms but why are there so many authors get involved in these papers? Could genome sequence study be suitable as graduate thesis (...
0
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1answer
34 views

Can prawns and lobsters live out of water for more than a day? [on hold]

Can prawns and lobsters live out of water for more than a day or they will die like fishes after sometime?
0
votes
1answer
40 views

flavivirus virus genome, methylated guanine

I'm looking at the sequence of a flavivirus virus genome (mRNA). Kindly see the link MH900227.1. How can I identify the Guanine nucleotide that is methylated in the capping process? Thanks,
0
votes
1answer
66 views

What species is this? What the fruit?

The berries of the fruit are sweet. The tree is growing in Israel.
4
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2answers
70 views

What could humans do to “see” what dogs smell?

We're able to see a lot of things using computers that we can't see normally: yellow-green, UV light, X-rays, etc. What do we have that harnesses the ability to "see" what dogs smell (e.g., harnessing ...
1
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0answers
14 views

Why doesn't chloride cause high blood pressure?

Assuming osmotic pressure is the (main?) culprit, why isn't the chlorine ion loose in your body after eating salt considered equally responsible for hypertension?
1
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0answers
14 views

Length at which a branch 'branches'?

An image from this question (and originally from Karl Niklas' computer model) has prompted the following question: The branches in this tree divide with increasing frequency as we progress from the ...
0
votes
1answer
28 views

Parasite? or a possible home infestation?

I found this bug on my bed tonight. It's smaller than a sesame seed. 6 legs and 2 antenna. Is this causing my dog and I to itch? Should I be concerned?
0
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0answers
23 views

Gametogonium vs primary gametocyte?

I've been trying to understand meiosis, and I'm confused about the difference between a gametogonium and a primary gametocyte. They are both diploid and I understand that the primary gametocytes are ...
1
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0answers
26 views

What is the chemical structure of myosin? [on hold]

What is the chemical structure of myosin? Specfically, what functional groups or monomers are they made of?
1
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2answers
47 views

Software to model and analyse protein–ligand interactions

I am currently trying to model a certain protein (Golgi Mannosidase II) and compare the induced fit of the inhibitor swainsonine. I would like to be able to analyse the distances between bonding ...
0
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0answers
39 views

Cactus plant identification

I received this cactus as a gift and I'd love to know the family/scientific name. Only one flower has bloomed since, it was between orange and yellow. At first it was perfectly spherical, but in one ...
3
votes
1answer
106 views

Why is it thought that protein folding is determined solely by amino acid sequence?

It seems that it is a generally accepted idea that protein folding is completely determined by the sequence of amino acids, but why do people believe that? Is it simply that no example of a protein ...
2
votes
0answers
11 views

How can I control or anticipate the time that a caterpillar spends in its chrysalis?

My young daughter caught a caterpillar (pararge aegeria, to my non-expert eye) and we put it in a breathable jar with leaves, kept indoors in England. (Current climate is around 14-19 degrees Celcius ...
6
votes
2answers
57 views

Is there a minimum load below which an infectious agent will not cause disease?

Suppose a single smallpox virus is injected in an human adult's body. Will it cause disease in the host? Is there a minimum microbial load below which it will not cause disease?
20
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2answers
4k views

Why we don't have vaccination against all diseases which are caused by microbes?

People can be vaccinated against certain diseases. Principle of vaccination is to use live attenuated load or inactivated. My question is - why we dont have vaccination against all diseases which are ...
3
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0answers
51 views

What disease does Saccharopolyspora erythraea cause?

For an examination assignment I have to find a disease caused by the bacterial species Saccharopolyspora erythraea, but I have searched the internet and have found no report of patients being infected ...
1
vote
1answer
43 views

What type of butterfly or moth is this?

Can anyone please determine if this is a moth or butterfly and what its name? We found it near a waterfall in the Philippines. There's actually a bunch of them and it seems that it's their natural ...
-2
votes
0answers
37 views

Ant or termite?

I've seen quite a few of these bugs on my kitchen counter and bathroom counter in past weeks. A few weeks ago, I left Ortho Ant B Gon Max gel droplets under the top of the counter in the kitchen, ...
0
votes
0answers
46 views

Why heart is on the left side?

I am not a biologist but I wonder if there is any benefit for the human to have hearts on the left side? do animals have their hearts on the left too? or on the right?
1
vote
1answer
41 views

Why is the ability of a virus to get crystallized considered as a “Non living feature of a virus”?

My book states that the fact that :"Viruses can be crystallized" is a proof of their "Non living character" Does that mean living things cannot be crystallized? If yes, why is that so?
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0answers
15 views

Can anything useful be done with stable isotope data for a single species

This is my first biology question. So I have some stable isotope data on a single species. This data looks similar to the demo data in the siar package for r which looks like this: ...
2
votes
0answers
24 views

What does the final (Illumina) RNA-seq library contain? ss cdNA or ds cDNA?

I guess the oligos on Illumina's flow cell only hybridize to to single-stranded cDNAs (sscDNA). However, when I read the TruSeq protocol (googled: TruSeq® RNASample Preparation v2 Guide) at the PCR ...
1
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0answers
25 views

Will drinking 25 mg-50mg Viagra every night cure Erectile Disfunction permanently? [on hold]

https://www.webmd.com/erectile-dysfunction/news/20040513/nightly-viagra-may-restore-normal-erections#2 This one says yes. Many things are unclear. Should people take it every night whether they have ...

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