0
votes
0answers
2 views

Why eyes itches instead of giving pain?

If any foriegn particles touches the eye, we get itching sensation & if we caught with eye infection then also it gives itching sensation, Why eyes itches instead of giving pain?
0
votes
0answers
4 views

restriction mapping.. Help!

I have trouble in solving below mentioned problem.. Help!!! A circular plasmid of 10,000 base pairs (bp) is digested with two restriction enzymes,A and B, to produce a 3000 bp and a 2000 bp bands ...
2
votes
1answer
93 views

Do SSRIs downregulate or upregulate the 5-HT3 receptor?

What effect do SSRIs have on the expression of the ligand-gated ion channel, the 5-HT3 receptor?
0
votes
0answers
7 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 ...
2
votes
0answers
16 views

Why do human ears have a lower boundary for the lowest energy perceivable signal than eyes?

I am currently hearing a lecture about human machine interaction. The lecturer is not a biologist (neither am I, we are both computer scientists), but he makes some statements about biology which I ...
2
votes
1answer
27 views

How Circumcision could reduce the chance for a HIV infection?

Circumcision removes the foreskin of the penis. The foreskin which acts as cover to the penis. Removing the foreskin makes more vulnerable to any STD, so how could circumcision reduce the risk of a ...
0
votes
0answers
15 views

Types of movement in cell [on hold]

Does this sentence true or not ( Passive movement uses energy whereas active movement consumes energy in the form of ATP in cell .)?it was read in a book
-1
votes
1answer
27 views

Henrietta Lacks and HeLa cells

I don't get it. How come she's dead when her cells don't die? Is it only the cells from her cervix that is immortal? So the cervical cancer took her life and the cells never died? From what I ...
2
votes
0answers
14 views

Does the rate of iterations improve evolutionary outcomes?

I understand that biological creatures evolved through perhaps billions of iterations to get to where we are today. It is easy to see that the more iterations or generations, the stronger/resilient ...
0
votes
0answers
23 views

Incomplete dominance vs. codominance at the level of protein production and function? [on hold]

What is the difference between incomplete dominance and codominance at the level of protein production and function?
2
votes
1answer
28 views

Converting fmri data to association matrix

I am currently working on a new tool for the analysis of (large) weighted networks. Association matrices (correlation matrices) as obtained from fMRI data are perfect examples of the kind of data I am ...
0
votes
0answers
20 views

How is incomplete dominance different from codominance?

Ok let me start with the definitions of incomplete dominance and codominance. incomplete dominance - The situation in which the phenotype of heterozygotes is intermediate between the phenotypes of ...
1
vote
1answer
25 views

Is there any way to make pymol find the closest distance between RESIDUES? [on hold]

This seems like an obvious utility, but I can only make it find the closest distance between ATOMS, which makes a big mess on the screen. Edit: To be clear, I want to find the closest distance ...
-4
votes
1answer
30 views

Are there any similarities in the DNA of a humans and animals? [on hold]

As the title says, i've been wondering if there are any similarities between the DNA of humans and the DNA of animals? Like, maybe monkeys are more similiar in their DNA to humans, than dogs are (to ...
1
vote
0answers
16 views

At what stage of embryonic development are allergies determined [on hold]

Hope my question makes sense. I'm an expectant father (for the 3rd time), my wife is 3 months pregnant and for the first time in her life she is suffering from weird lumpy rashes that appear ...
1
vote
1answer
19 views

Regarding the apoptosis mechanisms in cells and cancer

If all the cells in a cancerous tumour had there apoptosis mechanisms 'turned back on' or reactivated or repaired by some 'yet to be discovered' process would this cause the tumour to 'self destruct' ...
1
vote
1answer
7 views

What is the difference between tonic and phasic firing?

I am reading about dopamine, and I have realized that dopaminergic neurons can fire phasically or tonically. What is the difference between these two modes of firing?
0
votes
0answers
29 views

SDS PAGE GEL electrophoresis

I am here attaching my running Gel image. Why during running it showing blue shading at upper line of bromo phenol blue line? This is 20% Acrylamide GEL concentration.
0
votes
0answers
8 views

Why do Sorghum Bicolor leaves roll up?

In A level Bio today we talked about abcesic acid as a stress hormone, and its ability to reduce osmotic potential around guard cells to close stomata. My question is, is abscesic acid in sorghum ...
0
votes
0answers
8 views

Will the usage of Exo-Skeleton Gear actually weaken the human body over time? [on hold]

The human body as we know, changes to accommodate environment specific factors in order to ensure survival, for instance we all know people who live at high altitudes where the air is thinner ...
0
votes
0answers
26 views

Ear size and intelligence

In India, particularly in South India there is a belief (may be superstitious) if a person has wide and large outer ear then he must be intelligent and from this belief I have seen some of my teachers ...
0
votes
0answers
13 views

Phenotype choice for one of a MZ twin pair in a genetic association study

I was having a discussion with a colleague and this question came up... It is commonplace in molecular genetics studies to only genotype one of a pair of monozygotic twins (and then implicitly impute ...
4
votes
4answers
167 views

Has it been enough time for evolution through simple natural selection?

Let first state that I understand natural selection. I am not asking if evolution happened. I see evolution as a fact, but I do not assume the current theory of natural selection as fact. I wonder if ...
3
votes
2answers
53 views

How do gory images lead to nausea?

How do gory images lead to nausea? Yesterday my friend visited shock sites (a website). He said that he got nauseous sensation within seconds after viewing the gory images. However, I don't ...
0
votes
0answers
4 views

About artificially induced processes that would normally cause a cell to self-destruct

Are there certain biochemical processes that would normally cause a cell to self-destruct but if the cell being tested has apoptosis mechanisms that have malfunctioned or been 'turned off' the cell ...
0
votes
0answers
6 views

Why merkel cells are innervated by axon and not by dendrite end?

so here's the two pics that i have taken from google images and it really helped me with my question and my question is we all know that the afferent neurons receive senses for CNS which it had to be ...
0
votes
2answers
10k views

What is it called when one human eye is seeing brighter color than the other?

What is the name of a phenomenon where one of the human eyes is seeing brighter/more saturated color than the other? I can observe the same object from the same position while alternating which eye is ...
0
votes
1answer
17 views

where does feelings come from? [on hold]

If we don't have feelings society claims as heartless person, but actually where does our feelings comes from:heart or brain ? If heart, then my question is heart pumps the blood throughout the body, ...
0
votes
0answers
3 views

Does transplanted heart have full sympaticus without medication?

I am reading this and this where I am considering this sentence [N]o baseline parasympathetic innervation [in transplanted heart]. Does this sentence imply that ...
1
vote
1answer
12 views

PCR processes number of amplicons produced [on hold]

Beginning with 600 template DNA molecules after 25 cycles of PCR how many amplicons will be produced?
-1
votes
0answers
24 views

Human Cloning: PhD Program? MD Program? [on hold]

If my long term, lifetime career goal is to participate in human cloning, is there a PhD program that I could apply to that would facilitate this goal? Cell & Molecular Biology? Would one of the ...
-2
votes
1answer
18 views

Bigger animals needs bigger amount of oxygen?

Bigger animals, like Elephants, or Dinosaurs for example, are in need for more oxygen than the amount of oxygen that small animals need? (humans, dogs, cats, etc) Thanks in advance.
1
vote
1answer
20 views

Is Norepinephrine beta2 adrenomimetic?

I know that it has alpha1, alpha2 and beta1 effects. It has beta2 receptor where epinephrine can effect. However, to say that it is beta adrenomimetic, I am not sure. That is ligand binding beta2 ...
0
votes
1answer
21 views

Do the cognitive systems of all insects work exactly the same? [on hold]

Do the cognitive systems of all insects work exactly the same, without considering the predator/prey basis, do there exist any common behavioural patterns for insects all together. Do the arachnids ...
0
votes
1answer
10 views

Salbutamol's Pathways of Interaction and Classification

Salbutamol is a very commonly used direct-acting β2-agonist. This suggests me that it is sympatholytic. However, it has sympathomimetic pathways, see PubChem for Sympathomimetic. I am trying to ...
2
votes
0answers
51 views

How can oxygen production during photosynthesis be measured? [duplicate]

I'm curious how people measure quantitatively photosynthetic rate in labs. I've seen many qualitative examples with direct observations of bubbles forming in water due to photosynthetic output of ...
0
votes
0answers
5 views

Where can I find a working Kauffman NK model script?

I'm doing some research on evolutionary trajectories, and I would like to be able to try simulating some epistatic models. However, all of the NK model scripts I have tried fail to compile or ...
3
votes
1answer
46 views

What are possible reasons for a DNA template not giving amplification?

I am trying to amplify ~10kb length fragments using NEB LongAmp Master Mix. I had been using one particular aliquot of DNA (template amount in each PCR reaction of 10ul being around 60ng) and getting ...
3
votes
0answers
41 views

What makes the amide bond the lowest energy pathway?

I've reading about proteomics and how it can be used with mass spectrometry to sequence digested peptides. Reading this paper the author states (in box 2): peptide fragmentation induced by ...
-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 ...
0
votes
0answers
5 views

Can different strains of Rhizobium share an infection thread or symbiosome?

Rhizobium infection can be triggered at root hairs of legumes, creating infection threads. Can these infections threads be colonized by more than one type of Rhizobium (e.g. Fixing and non-fixing)? ...
0
votes
0answers
10 views

What's the composition of Actinobacteria's hyphae?

I'd like to know which chemical compounds form hyphae in Actinobacteria. Is it the same structure of the cell wall? Thank you
1
vote
2answers
39 views

How can natural selection occur at species level whilst not occuring at the individual level?

The chapter by Douglas Futuyma in 'Evolution' (Losos et al 2013, Princeton) states that natural selection can occur at the species level. Futuyma states that if natural selection occurs at the species ...
2
votes
1answer
61 views

Why are cats attracted to catnip?

According to wikipedia, the active substance is nepetalactone ($C_{10}H_{14}O_{2}$) which has weak sedative, antispasmodic, febrifuge, and antibacterial effects in human. Ok, but why are cats so fond ...
2
votes
1answer
83 views

In males, why it is difficult to control orgasm?

Why it is difficult to control orgasm in male humans? How are orgasms controlled and what is different between males and females? We can control urine for few minutes, but we can't control orgasm for ...
1
vote
1answer
19 views

Why is deficiency of thiamin characterized by brain malfunction [on hold]

Why is deficiency of thiamin characterized by brain malfunction.
1
vote
1answer
41 views

RNAs arising from intergenic regions

Which type of RNA molecule is coded for in intergenic regions? I think it must be a non-coding RNA but I'm unsure which type.
3
votes
0answers
25 views

B cell receptor editing

If a B cell contains two mu chains and two lambda chains and is self reactive can it go back and rearrange its kappa light chains? I'm not sure if it can only try to rearrange its lambda light chains ...
0
votes
0answers
12 views

How can succinylcholine cause myorelaxation?

I first thought that this is because of prolonged depolarisations. However, I am not sure anymore, because after reading PubChem, the only possible pathways are are Choline agonist. So I would say ...
0
votes
1answer
10 views

Ephedrine or pseudoephedrine indirectly central alpha2 mimetic?

I started to think this problem by first thinking if the alpha2 mimetism is possible in either case. It seems to be indirectly in either one. Ephedrine seems to have more prominent effect in CNS. ...

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