2
votes
1answer
18 views

Can geckos climb a wet surface?

We know geckos can climb vertically or even upside down a surface like glass. But can they do that on wet glass?
1
vote
1answer
24 views

What is the definition of the life biologically ?

I want to know what is the definition of the life biologically , on the other hand , what is the definition of the death biologically ?? However, I think it is a very difficult question to answer . ...
0
votes
0answers
8 views

Colormetric assay for a phenol product?

I am working on an assay for phenol products created by a colony of bacteria. I have searched up a paper that involves gibbs reageant but the protocol is kind of unclear. Does any of you know where I ...
0
votes
0answers
20 views

How much would a Gigantopithecus be able to lift?

How much weight would a Gigantopithecus blacki be able to lift? Size comparison of G. blacki vs human: https://en.wikipedia.org/wiki/Gigantopithecus#/media/File:Gigantopithecus_v_human_v1.svg Its ...
0
votes
0answers
22 views

What's it like to be a synthetic biologist? [on hold]

I find the field of synthetic biology very interesting and I would like to know what people in the field work on. Where do you work and what do you do there? What did you study to become a synthetic ...
1
vote
0answers
20 views

What is this flower?

I was in Germany recently, and I saw again a flower that I'd only ever encountered before at Meijer Gardens. It's interesting to me because I'd never seen a flower with color variation in only the ...
3
votes
1answer
35 views

Why is the pituitary gland located in the brain?

Why is the pituitary gland located in the brain in humans, instead of elsewhere in the body? Why would this be an evolutionary beneficial adaptation?
1
vote
0answers
7 views

Two different Leucochloridium infected snails - different species?

In the last three days, I have found two snails infected by some species of Leucochloridium. I found them in my garden in the south-west of Sweden. Now I'm wondering if they are the same species or ...
2
votes
1answer
40 views

Can axons act as receptors?

In all histology books, it is stated that all sensory nerve endings (receptors) are made of dendrites which conduct sensation from environment to body but it doesn't seem to be true. For example, the ...
1
vote
1answer
15 views

How to validate the use of an anti-virus monoclonal antibody in IHC by spiking a fresh organ with infected cultured cells?

I have assessed the specificity of a particular monoclonal antibody against a virus by immunofluorescence. I'd like to further validate it by testing it by IHC. Therefore I'd like to infect cells in ...
0
votes
0answers
13 views

What is the effect of the RNA 2' OH group on its structure and stability? [duplicate]

I've read that the 2'-hydroxyl group plays "fundamental roles" in both the structure and the function of RNA, and that it is a major difference between RNA and DNA. I would like to know more ...
1
vote
1answer
23 views

Bernoulli’s Principle in the Cardiovascular System

Below are graphs which illustrate the cross-sectional area, velocity, and fluid pressure through each vascular segment of the cardiovascular system. It makes sense that velocity and cross-sectional ...
0
votes
1answer
29 views

What is the surface area of the vitreous humour in contact with aqueous humour?

This is a question regarding the anatomy of the human eye, however for my purposes medium sized mammals should do. I am interested in estimating the surface area of the hyaloid membrane of the ...
-3
votes
0answers
30 views

What would be a Latin (Linnean) alternative for “The Talking Ape” instead of Homo Sapien (The Wise Man)? [on hold]

I would like to start a change.org petition to downgrade the name of our species from homo sapien, the wise man, to something that is more appropriate, like the talking ape. Reason: Not only is ...
1
vote
0answers
12 views

About binary fission in amoeba [on hold]

We know that amoeba reproduces by binary fission. Then does it mean that it never dies but keeps regenerating? In other words and more generally, does reproduction by fission by unicellular organisms ...
12
votes
1answer
103 views

Identify ~6-7mm long green creature

Here is the creature I found on the glass lid of my light bulb. I guess they are attracted to light as they all concentrate on the light source. I live in Hong Kong. The brown things aren't moving ...
0
votes
2answers
79 views

What is the DNA Sequence for an apple?

The title says it all. I'm just curious. I read that scientists mapped the genome for Malus Domestica, but I can't find a sequence anywhere.If this is a stupid question, I would appreciate if you tell ...
1
vote
0answers
14 views

Through which mechanisms did the Drosophila Histone Cluster evolve?

The Drosophila Histone Cluster is a gene cluster that contains more than a hundred copies of a sequence that encodes several histone proteins. These copies are very similar. My question is what ...
2
votes
1answer
42 views

Why does a wound itch while it's healing?

During healing of wound (almost in final stage) it begins to itch a lot around wound. I wondering what the reason for this is?
-1
votes
0answers
24 views

Eye Accomodation [on hold]

I tried to make a quick search in Google without too much luck, so i stumbled upon here. I am able to accommodate my eyes at will, even though with some constraints: -Accomodation works better for ...
0
votes
0answers
18 views

Nagalase testing any good?

Is Nagalase testing good to detect if something is wrong in the body (ex: cancer)? The next problem I assume would be to know what/where the problem is. To put it an other way: If I understand ...
0
votes
0answers
8 views

Why are porphyrins colored when porphyrinogens are colorless? [migrated]

In Haem synthesis porphyrinogens are colorless but on their oxidation (removing 6 hydrogen atoms) they become colored porphyrins ,also, is red the only color the turn into or it depends ?
5
votes
1answer
95 views

Can someone tell me the species of this lizard?

It's a green lizard with a silver tail, and it has pretty, bluish eyes. I saw it today, July 26th, trying to get some shade on a hot, sunny day (32 degrees) at around 18:00 in Austin, TX USA. It's ...
1
vote
1answer
64 views

Why are nitrogenous bases of DNA hydrophobic if they can hydrogen bond?

Why are nitrogenous bases of DNA hydrophobic if they can hydrogen bond? Is it that they are only relatively hydrophobic? This forum explains it but does not give an example of the structure.
1
vote
0answers
21 views

Biological implementation of convolutional neural networks

In computer science, 'convolutional neural networks' are used, that are meant to be inspired by biological network structures like found in the human brain visual cortex. In the computer ...
3
votes
1answer
55 views

Is there a schema for how human behavior is genetically determined?

It seem one can distinguish three different kinds of genetic determinism of common patterns of human behavior: behavior that is directly wired into our nervous system, e.g. face-related mirror ...
7
votes
1answer
61 views

What bacteria do unborn babies contain?

This Scientific American article states that "[human] infestation [by bacteria] begins at birth". This would suggest that unborn babies are free from any bacteria. However, if the mother catches a ...
1
vote
1answer
12 views

What is the spacing between stop codon and transcription terminator?

When one tries to express a protein from a synthetic plasmid in E. coli, how many base pairs should there be between stop codon and the transcription terminator site?
2
votes
1answer
50 views

Is nuclear DNA immuno-privileged?

It is well known that if DNA occurs in the cytoplasm of eukaryotic cells, an immune response may be triggered through a myriad of DNA receptors and pathways as part of the immuno response. Yet, ...
2
votes
0answers
22 views

How does being afraid or nervous affect mental performance?

It's known that when somebody is not relaxed (nervous,worried....) , they can't concentrate , what exactly in being nervous is the problem?
0
votes
0answers
14 views

Why we see a reddish vision in dark room after seeing a bright light?

When you enter a dark room after seeing sunlight or other bright light, you see a reddish speck of light hovering around your vision. This vision generally disappears after a few minutes. Why this ...
-1
votes
1answer
48 views

Can plants feel pain? [on hold]

I was wondering whether plants could feel pain, for example, does grass feel pain when you mow the lawn? Or do the plants and trees that grow vegetables and fruits feel pain when you harvest them? ...
1
vote
1answer
29 views

What is variation in Speciation

I read a lot about speciation. To my knowledge, A species is often defined as a group of individuals that actually or potentially interbreed in nature and produce fertile offspring. Speciation is a ...
8
votes
1answer
74 views

Does your iris color have an effect on your vision?

I've always wondered if having different iris colors, (eye colors) may have any advantages or disadvantages on ones vision. Specifically regarding the effects of light. Personally, I have troubles ...
2
votes
1answer
19 views

Do the enzymes and compounds in saliva help with stain removal?

Does spitting on stains help with removal? Saliva is high in amylase that should help with the breakdown of protein rich stains like blood and semen. It also contains antimicrobial enzymes and ...
5
votes
1answer
61 views

Are low-intensity radio-waves carcinogenic?

A recent review article, Oxidative mechanisms of biological activity of low-intensity radiofrequency radiation reached a surprising conclusion our analysis demonstrates that low-intensity RFR ...
-1
votes
1answer
32 views

People who are very “aware” or very sensitive, is the brain more advanced or less advanced? [on hold]

Usually when we think of people who are very aware of their surroundings or very sensitive to the subtleties in all situations, we assume that it is because their brains are more advanced so they can ...
2
votes
0answers
22 views

Metabolism priority in poisonings

Let's assume we have two toxins - one of which is routinely metabolized by the liver, and the other is new to the organism (consider for example alcohol in a heavy drinker and any other drug that is ...
3
votes
0answers
39 views

How long does conception take?

I know that conception is a multi-step process. A sperm fuses with an egg. Its contents diffuse into the cytoplasm. Dad's DNA is transported to the nucleus. Proteins are gradually made from Dad's ...
5
votes
3answers
75 views

Why are sight and sound prerequisites for intelligence?

Edward O. Wilson, in The Diversity of Life wrote (emphasis mine): Ninety-nine percent of the animals find their way by chemical trails. […] Animals are masters of this chemical channel, ...
11
votes
3answers
2k views

There aren't any animals like hornets that hunt large prey (like a rabbit, or even up to a deer), right? Why not?

There aren't any eusocial animals (hives of wasps, ants, termites, etc) that hunt large prey, are there? I'm thinking prey in the size range of, say, a rabbit, or even a deer. I can't see a rabbit ...
-3
votes
0answers
35 views

Why do Shiitake mushrooms grow on logs? [on hold]

Why do Shiitake mushrooms grow on logs? I know some mushrooms can be grown in a medium. Why logs?
-1
votes
0answers
18 views

Neuroscience - emission of smells [closed]

My question was erased by the "Mad Scientist". I would be grateful for more details on a fact (i.e. Electronic transmission of smells to a human through radio waves). Someone is probably an expert on ...
-2
votes
0answers
38 views

Importance of Biodegradation pathway over other pathways

What is the importance of biodegradation pathway over other pathways? This question occured when I saw this paper: Fenner K, Gao J, Kramer S, Ellis L, Wackett L. Data-driven extraction of relative ...
6
votes
1answer
71 views

Database of Geographic Range of Species

Is there a database of organisms which would contain their queriable geographic location? I would need to perform a rather simple query, such as ...
1
vote
1answer
39 views

Genetic Diversity in Mitochondria

As I was studying for my GRE exam, I was reading on Mitochondria. I then remembered that they undergo replication similar to bacteria. So I googled for info and found on Wikipedia that there is a " ...
0
votes
0answers
38 views

Why does water feel colder than air at same temperature? [closed]

If you go swimming and the water is the same temperature as the air, when you first jump in, the water feels colder then air temperature. I guess this has something to do with Heat-Conduction, like ...
2
votes
1answer
23 views

Why isn't the upper limit of pain lower in humans?

From what I understand, pain is an useful mechanism that signals us that something is not quite right with our body (in particular, we're under attack). It's good - it alert us and tells us that we ...
1
vote
0answers
42 views

Why are there no complex hermaphrodite land animals? [closed]

The title says it all. I know that 'complex' is a pretty ambiguous term to use, but I can't think of a more scientific term/definition for my meaning. I can't think of any large (larger then a small ...
2
votes
0answers
27 views

What form of reproduction did the first land animals use?

What form of reproduction did the first animals on land use*? Were they hermaphrodites, or did they have male and female sexes? [Is there a proper term for sexual separation in a species?] Were any ...

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