0
votes
0answers
8 views

During Orgasm, Do females ejaculates like males?

Acc to Bio-Science, males get ejaculates when they reach orgasm, so what about females? do they get ejaculation like males?
0
votes
0answers
8 views

Is it possible to save a person from this condition?

Person accidentally injected with AIDS Blood, so will he get cure if he got doctor's operation immediately.? Yes It is possible to save a person when snake bites him, by sucking the poison from the ...
0
votes
0answers
15 views

What the definition of a flanking residue?

What the definition of a flanking residue? How do you define whether an amino acid is flanking or not? What are the environmental or physiochemical conditions in which a residue is considered to be ...
0
votes
0answers
12 views

What are the changes to semen if it is put stationarily in the atmosphere for a period of time?

If I put it in a test tube for, say a week, what are the physical and chemical changes? In addition, will the fructose inside be lost or broken down?
1
vote
1answer
26 views

Can our eyes see faster? [on hold]

There are some animals that react faster than normal rate (like flies, etc). I guess it's because they can see faster than other animals and humans, as if time passes slower for them. I think some ...
1
vote
1answer
14 views

How do neurons recieve ions needed for creating electical pulse?

I really wonder what cell (or anything else) is responsible for getting ions into the brain and into the neurons for creating electrical potentials. Or are the ions just freely released into the brain ...
-3
votes
0answers
20 views

Why not frozen evolution? [on hold]

I'm not sure if you have heard of it. It is a theory proposed by the best Czech evolutionary biologist (even though it disproves the selfish gene and darwinism for sexual species :), but it is not ...
0
votes
0answers
18 views

If humans are 10cm taller than 200 years ago, then how can it be that we are “not much different” from humans 70000 years ago? [on hold]

According to Yuval Noah Harari in his book "Sapiens: A Brief History of Humankind" we today are not much different from the post-cognitive-revolution Homo Sapiens which lived 70000 years ago. But then ...
4
votes
2answers
88 views

Are all pathogens parasites?

If parasites are organisms that feed on other living organisms, then aren't all pathogens parasites? I've emphasised on 'feed' because I guess the pathogens just eat us (i.e. take nutrients to ...
1
vote
1answer
13 views

How do roots absorb water instead of presence of waxy - material suberin in the form of casparian strips on the wall of endodermis?

I found that in the endodermis, the tangential and radial walls have deposition of the waxy, and hence water-impermeable, material suberin in the form of casparian strips. The endodermis comes before ...
3
votes
1answer
46 views

Why are lips covered with specialized skin?

I found out some interesting facts while studying our lips: They are covered in glabrous skin, while most of the skin surface is hairy; The outermost layer (stratum corneum) of the skin is far ...
1
vote
0answers
32 views

Differing Flow Cytometry Genome Sizes and Sexual Mating Implies Differing Chromosome Counts

Do the fundamental principles of genetics strongly suggest the following is a derived conjecture? If 2 flowering plant species A and B have widely differing genome size (at a minimum a 50% ...
3
votes
2answers
300 views

Can dietary monosodium glutamate intake induce restlestness?

The question is all in the title. More context: I like phở soup. I have noticed that I get restless after eating the phở soup at some restaurants. The effects are similar to the ones resulting from ...
1
vote
1answer
20 views

What is the antagonist of epinephrine?

Norepinephrine and epinephrine have similar stimulant properties on the nervous system and the body. I was wondering which hormone is the antagonist of epinephrine?
0
votes
1answer
18 views

Marker validation using transcriptome and genomic sequences derived from a single cell

I conducted a SSR marker analysis using bioinformatic tool on some RNA-seq data of human tissues. Now, my supervisor believed that we have to validate these SSR on a transcriptomic and genomic ...
1
vote
0answers
13 views

Why is 2 sexes in an organism so common? [duplicate]

Sorry if this is a super simple question, but why do a lot of species have only 2 sexes? Some species just have 1 sex, but I've never heard of an organism having 3 sexes, for example. 3 sexes seems ...
-1
votes
0answers
13 views

Does anyone have some references on using metal halide lamps in a greenhouse? [migrated]

I am looking for some references to use Metal Halide Lamp in green house. Is there some one can recommend me the specification (also the function), brand and the supplier (if possible)?. Many thanks ...
2
votes
1answer
15 views

What is pQTL and why do we need eQTL?

eQTLs are genomic loci that contribute to variation in expression levels of mRNAs (wikipedia). There is data out there that shows that ~60% of the time, the amount of mRNA in a cell is directly ...
3
votes
1answer
23 views

Can sexual selection operate in temperature dependent sex determining organisms?

Or more broadly, are distinct forms of genetic inheritance (ie. sex chromosomes) needed for sexual selection? My thinking was that since there are no sex determining loci, there could not be linkage ...
1
vote
1answer
21 views

genes map to eQTL/pQTL

Of the 192 target genes, 79 map to a significant eQTL or pQTL in at least one dietary condition. is the line for a paper "Multilayered Genetic and Omics Dissection of Mitochondrial Activity in ...
0
votes
0answers
10 views

Size of the glycan chain in a glycosylated protein

I would like to know where I can found the (experimental/estimated) distribution of glycans sizes attached to proteins.
1
vote
1answer
29 views

How do we call a region of low carrying capacity?

I am looking for a convenient word to define a region of the landscape where the local carrying capacity (population size) for a given species is low but different from zero. The species is still ...
1
vote
2answers
25 views

How do plants get carbon?

How do plants get carbon? From air or soil? How is it different for aquatic plants and algae? According to https://en.wikipedia.org/wiki/Soil_organic_matter soil has 3.3 times the size of the ...
0
votes
0answers
28 views

Do we all dream “every” night?

I had an argument with my brother and he claims that he doesn't dream every night ie when he dreams he always remember and if not he hadn't dreamt at all. I'm under the impression that all humans ...
0
votes
0answers
11 views

Nicotine and plants [duplicate]

I hear that nicotine, produced by Nicotiana tabacum, is poisonous to the plant itself, which is why it accumulates the nicotine in the central cell vacuole. If so, why is nicotine produced in the ...
0
votes
0answers
11 views

How do non-dimorphic birds distinguish sex of possible partners/rivals?

Some birds, such as my pet Pionus chalcopterus, are not sexually dimorphic. People can't tell them apart, and even trained avian vets are not 100% certain with an inspection probing the vent. I ...
1
vote
0answers
28 views

What neuro-motor diseases cause the lower esophageal sphincter (LES) to malfunction?

Please note: This question is neither homework nor seeking medical advice. I'm simply asking for a factual, objective, biological explanation of the various neuro-motor diseases/illnesses that can act ...
-1
votes
0answers
12 views

Effect of cytokines on dengue virus [on hold]

I want to know what sort of effect the following cytokines would have on dengue virus: IL-1β, IL-10, PAF, S1P, and TNF-α. 1) What sort interactions do they have? That is how one cytokine ...
0
votes
1answer
15 views

What is the “leaky valve” between the esophagus and stomach?

When someone talks about there being a "leaky valve" between the esophagus and the stomach, what is the exact biological structure they are talking about? This would be a structure that, when ...
0
votes
0answers
12 views

Proteins denaturation and natural selections

Which are the advantages, in terms of natural selection, of the denaturation of the proteins during the food preparation? Or in other terms, is it more important the reductions of bacteria in the food ...
-1
votes
2answers
29 views

What would happen if most the fat in your body was rapidly converted into energy in 2 minutes? [on hold]

It all started out as an argument I had with my friend.He said that "it would be the equivalent of catching a fire and burning" But all I thought would happen is that you would now be very hyper ...
1
vote
1answer
20 views

Are multi-chain proteins synthesized as one biological unit?

Are multi-chain proteins (especially homo/hetero-dimers) synthesized together as one overall unit or are they separate monomers which bind together at some point after synthesis, and are there any ...
2
votes
0answers
17 views

Why perform imputation?

Genetics datasets contain measurements for millions of single nucleotide polymorphisms (SNPs). Some (usually small) percentage of these values are of low confidence, and are labeled as missing values. ...
0
votes
0answers
5 views

Cure for high anti TPO levels to attain pregnancy successfully [migrated]

Can a person with high anti tpo levels be treated to have successful pregnancy ? Does intralipid infusion help in this process ? Does prednisone help in this process ?
4
votes
1answer
21 views

How long is saliva viable?

Does anyone know if saliva can stay viable for about 5 days, before it gets suspended into a DNA genealogy vial for testing? Background: My brother wants to do a DNA genealogy test at a US testing ...
1
vote
0answers
7 views

What are the differences and similarities between fimbriae and adhesins in microbes adherence factor?

Adherence factors in microbes is to attach to a host cell or to an extracellular matrix. So what is the difference and similarities between fimbriae and adhesins?
10
votes
2answers
2k views

Do birds emit infrared?

I'm an electronics engineering student and I am going to use a sensor that detects infrared emitted by birds that invade rice paddies. My question is: Do birds emit infrared radiation? I know that ...
3
votes
2answers
82 views

Why does all life use the same macromolecules in their genetic code?

There is no biochemical constraint of any sort, so why doesn't some other code work? Why is it specifically RNA/DNA?
2
votes
1answer
28 views

Differential gene expression analysis between species

I have RNA Seq data from mouse and human skin ( 2 replicates each) and want to compare the expression of the orthologous genes to find any which are differentially expressed. I have quantile ...
3
votes
1answer
42 views

Why do men grow facial hair?

Ancestral facial hair. Our closest ancestors, the chimpanzee and bonobo, both grow facial hair around the mouth area. What is noteworthy is that this is the case in both males and females of the ...
0
votes
0answers
13 views

Why can we use hydrogen peroxide to clear insects from our ears?

From what I was taught in high school, hydrogen peroxide is corrosive. However, I just saw a news about someone with cockroaches in his ear, and people in the hospital used hydrogen peroxide to clear ...
-4
votes
1answer
25 views

I need a precise antigen definition [on hold]

I am confused about the precise definition of an antigen. Does antigen refer to just the "marker" proteins on the surface of pathogens or the entire pathogen?
1
vote
2answers
31 views

Are genes on the 5' to 3' strand only?

I confused myself during studying, and wanted to confirm something. Since transcription via RNA polymerases only takes place in the 5'to 3' direction, that would mean that that 5' to 3' strand is the ...
1
vote
0answers
29 views

How octopus develops its imitation skill?

I've watched one documentary about a Mimic octopus which they can imitate another animals in several form e.g. a Lion fish, a Sea snake, a Flatfish, etc. My question is how these octopuses can have ...
0
votes
0answers
11 views

Why does anaerobic microorganisms cause fetid smell in respiratory secretions? [on hold]

This is always given as a fact. But I've always wondered about the reason.
2
votes
0answers
19 views

Can a stationary eye with a moving pupil exist? [on hold]

I am making a sci-fi web-comic set on an alien world and I thought up an idea for an eye that works much like an eye from a mammal, but instead of moving the whole eye, only the pupil moves. This idea ...
3
votes
1answer
10 views

Is disease transmisson through milk consumption or meat consumption considered direct or indirect transmission route?

From an epidemiological point of view, is consumption of raw milk or meat considered as indirect or direct transmission ? Let's take the example of bovine TB. Is consumption of unpasteurized milk ...
10
votes
2answers
629 views

Why are potassium channels slower than sodium channels?

I am relatively new in the subject of biology. I have a strong mathematical background and in order to get into the field of computational neuroscience, I am trying to get some biological background. ...
0
votes
0answers
17 views

Relations of Watson & Crick work and Meselson & Stahl [on hold]

It is said that Watson & Crick postulated the DNA model,does this make Meselson & Stahl (which found out that DNA is semi-conservative) contributed to enhance the postulate by Watson & ...
0
votes
0answers
15 views

Function and Mechanism of Height Genes

I have an inquiry regarding the exact function of height genes. To my knowledge, although they are heavily regulated by epigenetic factors, height genes can have either an "on" or an "off" allele, ...

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