3
votes
0answers
23 views

Does increased calorie intake cause increase in libido in humans?

I'm interested in the effect of increased calorie intake on sex hormones and chosen mating strategy in humans. I'm aware that humans have a dual mating strategy - somewhere between pair bond and ...
3
votes
3answers
52 views

Can pathogens enter the bloodstream if the epidermis has been scraped off?

Assume that the epidermis has been scraped off by a fall (not just scratched). Also assume that the dermis is completely untouched. Does this allow pathogens to enter the body more easily, or does the ...
1
vote
0answers
9 views

Link between hypoglycemic events in Type 1 diabetics and clinical anxiety?

I recognize that the scientific community is aware that the chemical stress pathway is mediated by glucocorticoids. The pathway response initializes as a result of some sort of stress (potentially ...
3
votes
0answers
44 views

Tree ID request

We have a small tree (more like a shrub) in our village of north eastern anatolia, and it is known for its local name which is not Turkish. Even worse I don't know which language it is, but most ...
1
vote
1answer
32 views

Can you knockout a gene specifically in the dorsal root ganglion in adult mammals?

Since the dorsal root ganglion is so small, would that be easier than the entire body?
3
votes
1answer
24 views

How do drugs enter synapses?

Many psychopharmaceutical drugs change synapse chemistry or directly agonize neuroreceptors in the brain. For example, cabergoline is a D2 agonist. How do these compounds enter the physical synapses? ...
3
votes
1answer
39 views

What is heteroduplex?

I fail to understand the what exactly is heteroduplex due to unavailability of a suitable diagram. According to wikipidea: A heteroduplex is a double-stranded (duplex) molecule of nucleic acid ...
0
votes
0answers
16 views

Is every evolutionary change an improvement? [duplicate]

In evolution, an species mutates and evolves over large genetic time spans. But every big change (say, swimming to walking, or walking to flying) is made up of countless micro-changes over the course ...
1
vote
1answer
33 views

Is it possible to have a random un-mutation of genes?

According to this article: Gene mutations can be classified in two major ways: Hereditary mutations are inherited from a parent and are present throughout a person’s life in virtually ...
1
vote
0answers
16 views

Does class switching occur both in B cells and Plasma cells?

I understand that the cell class switches to change the type of immunoglobulin it is producing. The B-cell produces the membrane bound B-cell receptor (BCR) while the plasma cell produces the the ...
-1
votes
1answer
33 views

What legal possibilities exist to get access to articles behind paywalls? [closed]

Many publications, be it in high-profile journals, proceedings, book chapters or any other medium, cannot be accessed without subscription alongside substantial costs, even though most of the ...
0
votes
0answers
10 views

is the red eye reduction lamp dangerous to an infants eyes? [closed]

is the red eye reduction lamp dangerous to eyes? I have a friend who is concerned about us taking so many pictures of her 3 month old.
0
votes
0answers
44 views

Why is the protein ubiquitin so ubiquitous?

Ubiquitin is a protein tag that is attached to proteins in order to mark them for destruction/proteolysis by the cell. This system is sometimes used for clearing out harmful viral proteins that infect ...
0
votes
0answers
9 views

How does the Jendrassik's manoeuvre reinforce reflexes? [migrated]

According to Wikipedia, The Jendrassik maneuver is a medical maneuver wherein the patient clenches the teeth, flexes both sets of fingers into a hook-like form and interlocks those sets of ...
0
votes
1answer
26 views

Is it safe to feed an adult fire salamander with slime maggots? [closed]

As a reminder, maggots feed of a flesh, while fire salamander consumes his prey alive, without killing it. Can it happen that the maggot will start eating the salamander from the inside?
3
votes
2answers
47 views

Does an increased reproduction/mortality rate provide an evolutionary advantage?

If a species has a high mortality/birth rate, then it is able to adapt to changing environments more quickly than species that live for a long time. Without a high mortality rate, food and other ...
0
votes
2answers
46 views

Why cancer disease is named after sun signs ? [duplicate]

I googled it, It didn't helped me a lot. So Why cancer disease is named after sun signs ?
3
votes
2answers
45 views

Is this in vivo or ex vivo?

This question has probably been asked a few times but I get the concept I just dont know how to apply it for this paticular experiment I aim to use cherry tomatoes and determine its glutamate content ...
0
votes
0answers
9 views

How long can/will an infant hold his/her breath as part of the dive reflex?

Various other questions on the site have talked about the Diving Reflex, which is also known as the Mammalian Diving Reflex. This reflex is observed in mammals of various species, but also in human ...
3
votes
1answer
78 views

How Much DNA do Siblings whose Parents are First Cousins Share?

On average, two siblings generally share 50% of their genome. How much does this increase if the siblings' parents are first cousins?
0
votes
2answers
20 views

BLAST with minimum E-value cutoff

It's easy to set the maximum E-value threshold in a BLAST request. I need to set the minimum E-value. Does anybody have any suggestions?
0
votes
2answers
36 views

Identification of a Lepidopteran

I’m afraid the quality of the television picture isn’t good enough to identify it, but was there anyone in Paris on 10th July 2016 who knows what kind of moth this is or can supply a better photo? My ...
4
votes
0answers
23 views

Reason for variation in the site of onset of edema

What is the reason for the observed clinical difference in the earliest site of onset of edema in cases of different etiologies? For example, in Congestive Heart Failure, it appears initially as ...
0
votes
1answer
16 views

Is DNA sequencing coverage a function of sample purity?

How is coverage affected by the purity of a sample? And can coverage for a sample be affected by other things, like the library preparation or manner in which the sample was stored?
0
votes
1answer
18 views

How does gene editing in one cell affect other cells?

I have read about gene editing and I have some questions concerning this technology: With gene editing, are we correcting the genes in all the cells or a single cell? If the gene editing is done ...
6
votes
1answer
62 views

What is the cause of the packaging capacity limit of recombinant adeno-associated viral (AAV) vectors?

I am working with recombinant AAV and I am puzzled by the limit of their packaging capacity (around 5Kb ssDNA), that is really a huge drawback for gene delivery. I have tried to look more in deep ...
0
votes
0answers
6 views

Ciliary muscle and accommodation

Can anyone explain how contraction of the ciliary muscles causes relaxation of the zonules? Please explain it anatomically i.e. the attachments of ciliary muscles and its relation with the ...
1
vote
1answer
14 views

Accommodation mechanism. [closed]

Can anyone explain how contraction of the ciliary muscles causes relaxation of the zonules? Please explain it anatomically i.e. the attachments of ciliary muscles and its relation with the ...
0
votes
2answers
28 views

What amount of genes co-expressed should be expected in a tissue?

I am working with gene expression microarrays of tumor tissues and I want to use a program to find the clusters of co-expressed genes in order to know if some particular genes are co-expressed with ...
0
votes
0answers
11 views

How to stop common myan(invasive species) from nesting in nestbox made for oriental magpie Robin (residential species) ? [duplicate]

How to stop common myna from coming to nestbox made for oriental magpie Robin, use of anti-myna baffle and removal of nesting materials from nest is also done, even though common myna comes at nestbox ...
4
votes
1answer
241 views

“X” in stock solutions

We prepare buffer solutions with concentration in terms of x, for example 50x TAE buffer. How do we come up with ...
1
vote
0answers
20 views

Does my brain have limited learning capacity or memory?

Lately in my free time I like to read books, articles etc etc.. What I have discovered, or maybe it is an illusion(lack of concentration or something), is that I usually forget most of the material ...
1
vote
0answers
30 views

Natural rulers: What organisms have the most regular size?

What organisms exhibit the most precise length scales? E.g. are there trees with rings that are of very precise thickness, or single celled organisms which are all very nearly the same length? In ...
1
vote
1answer
27 views

PBST vs. TBST buffer in western blotting

What is the advantages and disadvantages of using either PBST or TBST in western blotting, or while working with proteins in general? Are there other buffers which are also used for western blotting, ...
2
votes
1answer
59 views

What does completing the course of antibiotics accomplish?

This article from the WHO states: If you stop treatment early, there is a risk the antibiotics won’t have killed all the bacteria that made you sick and that it will mutate and become resistant. ...
0
votes
1answer
29 views

How many Amperes to kill fruit flies and mosquitoes?

As above. Making a homemade trap to kill them all.
1
vote
0answers
79 views

Found an unknown species, whom should I contact?

My father has found a very queer looking insect. He'd been watching it for over half a year on the tree right next to our house and in all this time hasn't been able to find anything like it on the ...
0
votes
1answer
23 views

Is brachydactyly due to mutation?

I have this so called "clubbed thumbs"also known as brachydactyly. It is of D-type. I searched for it on internet and found that it is a dominant inherited disease. But to my surprise,none of my ...
0
votes
2answers
31 views

Are all prokaryotic promotor regions the same, or do they differ depending on the product of the transcript?

Are all prokaryotic promotor regions the same or do they differ depending on the protein encoded by the mRNA being transcribed? What I am thinking is that if activator proteins are a method of ...
0
votes
0answers
19 views

Are there observed instances of genes expressing undesirable traits to dissuade members of a particular species from reproducing?

All living things on earth are programmed to both survive and reproduce, but are there observed, documented or otherwise novel cases where the genes of any particular member of any particular species ...
0
votes
0answers
24 views

Sensory neurons, interneurons and motor neurons - recognizing the type of neuron at microscopy images

Is there a simple way to distinguish between sensory neurons and interneurons and motor neurons at the microscopic images? I read a little bit about Open Connectome Project. Is there a possibility of ...
0
votes
0answers
17 views

How do afferent mechanoreceptors work on the finger pads?

I'm having some difficulty understanding how the afferent signals are sensed in the finger pads. My understanding is that for mechanoreceptors (SA1, SA2, RA1, RA2), as the indenting force increases on ...
0
votes
0answers
6 views

Can I Survive on a Mostly Grass/Leaf Diet? [migrated]

I want to guarantee an easy, effective, and possibly free food source for the rest of my days, but I am skeptical. Growing my own organic food would be ideal, but that would limit my mobility or ...
1
vote
2answers
36 views

Can it be said that proteins determine phenotypic traits?

I am not ignoring the function of genes, or the gene-environment interactions. What I want to know is if behind every "observable characteristic" we can find a protein -or a group of proteins- which ...
0
votes
0answers
59 views

How do marine mammals and penguins maintain bone density?

After much searching on Google with no results, I decided to ask about my question here. If I'm not mistaken, swimmers' bone density is less than normal; at least for lifetime swimmers. Astronauts ...
0
votes
0answers
27 views

How to determine if a tree is unrooted in Newick format?

I have two questions: 1- Given a tree in newick format, is there a standard way of determining if it is rooted or unrooted? 2- How to 'manually' root an unrooted tree in newick format? As far as I ...
6
votes
0answers
44 views

Optimal pH of protein buffer? Basic principles to adjust buffers according method and analysis

Protein buffers such as PBST, which is used in western blotting, are normally adjusted to pH 7.4. When I try to find why, I find some information about optimal pKa for protein stability. Im not sure I ...
0
votes
0answers
13 views

How Quickly Is a Body To Not Accept a Food Well [closed]

I don't know the actual term. What I do know is that if a person doesn't eat a certain food or type of food for an extended period of time, their body doesn't react well to the food if they eat it ...
-1
votes
0answers
17 views

Are seagulls ever cannibals?

I'm obviously not talking about seagulls eating other birds in general. Only actual seagulls. Seagulls are notorious for being almost as omnivorous as it's possible to be. They're known to eat ...
0
votes
1answer
29 views

How to define a 'trait' objectively?

I'm coming across an increasing number of papers that use trait-based approaches for risk assessment, like this one . This paper defines a trait as follows: Traits are the physiological, ...

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