0
votes
0answers
6 views

why RNA exist in life?

why some organisms has only RNA and not DNA ? and if RNA is sufficient to sustain life why different life forms developed DNA ?
0
votes
0answers
1 view

Why golgi in animals called desmosomes in plant?

I searched in Google but was unable to find my answer . Why is name different even function is same ?
0
votes
0answers
7 views

Can someone die from pain?

I'm a cna. Just got home from a very long day at work. Just started this job and I got hurt at work last night. I got to thinking. Can pain cause death??? I think yes in some cases. Like if a person ...
1
vote
0answers
6 views

From where does the shell of turtle appears?

How is this shell formed? I searched on Google and found some answers regarding why it is formed and what is it made up of, but I want to know about the procedure. I Googled and found the following ...
0
votes
0answers
5 views

What determines excrement's caliber?

Often, when I defecate, pieces of feces have a clearly-defined shape and size — both length and width (that is, cross-sectional diameter, or caliber). And that width seems to vary quite a bit. ...
0
votes
0answers
12 views

Effect of magnets on health [on hold]

Could carrying a magnet around ones neck be potentially dangerous? For heart patients the answer is clearly yes, but what about healthy individuals? Moreover, some internet sources say magnets could ...
1
vote
2answers
21 views

Plot coverage per base for BAM file

I have a BAM file and a BED file for my own chromosome. I would like to get coverage per base and ideally construct a histogram of coverage across each gene. The motivation is to visualise the ...
0
votes
2answers
13 views

Properties that can be derived from amino acid sequences

What are the properties that can be derived from an amino acid sequence apart from those mentioned in the website? In the mentioned website, the properties that can be calculated from amino acid ...
0
votes
1answer
10 views

Equilibrium and Metabolism: Can cells exist at STATIC equilibrium? What about dynamic equilibrium?

I understand that in closed systems, once reactions reach equilibrium, they can no longer be used to power other reactions. If a cell was a closed system (which it is not), being at equilibrium would ...
2
votes
0answers
7 views

What is the significance in an alpha-helix being right-handed or left-handed?

Why is that often when alpha-helices are discussed, it is also mentioned their direction - right-handed (clockwise) or left-handed (anti-clockwise)? I have heard that left-handed alpha-helices are ...
3
votes
0answers
20 views

What kind of larvae are these?

My uncle was helping us spray the garage for ants, and he stumbled across a huge batch of some type of larvae. According to him... "It looked like a long, narrow clump of mud. When I broke it ...
0
votes
1answer
12 views

What is “chain identifier” in PDB?

The PDB file format is explained here. My question is what "chain identifier" is exactly? What is the difference between two residues which have the same sequence number but different chain ...
-1
votes
0answers
20 views

Why Do Bruises Change Colors? [on hold]

The bruses 1st have a red colour which is understandable. but later several blue , yellow , slightly greenish and brown also? How does the colour changes ?
1
vote
0answers
25 views

Can bigger persons generally resist g-forces better?

I've seen a claim that bigger persons generally resist g-forces worse than smaller in an undergraduate biology book. However this claim was supported by the argument that blood has to travel a longer ...
0
votes
2answers
22 views

What makes tones sufficiently useful that it would lead to the evolution of tonal processing?

I will define a "tone" as  a steady periodic sound. As an example, I consider a sinusoidal wave to be a tone. By "tonal processing", I mean ratio relationships between the notes. For instance, if I ...
2
votes
0answers
47 views

Are all dipeptides synthesizable?

Probably a basic question, but are all possible dipeptides synthesizable? For 20 amino acids, there should be in principle 190 dipeptides; do they all exist or is there chemistry that makes some ...
1
vote
0answers
21 views

Why are published chromosome counts for polyploids often incorrect by an integer multiplication factor of the original diploid like count?

Why are published chromosome counts (done using techniques such as root smashes) for polyploidy flowering plants often incorrect by a multiplication factor of 2 or 3 from the original diploid like ...
0
votes
0answers
22 views

Why do we pass out when we are under attack?

It is known that we might pass out, but not die, when we are under attack, e.g. got striken at the neck, blown by blunt object at the cerebellum etc. Wouldn't it be more "advantageous" to be conscious ...
0
votes
0answers
4 views

Halophiles' food habit

We know that halophiles are heterotrophic.! But in those highly saline environment what do these organisms eat as there might be very little chance of survival of any other organism?
3
votes
1answer
42 views

What type of jellyfish is this

I have been swimming in the seas around Minorca and saw a jellyfish I had not seen before. I have tried to find it and have (eventually) found 1 single picture of the jellyfish. The problem I ...
5
votes
1answer
32 views

What could cause spiral tree growth?

While hiking through one of the areas burned in the 1988 Yellowstone fires, I noticed that some of the trees appeared to have grown in spiral patterns. Most downed trees have crack patterns that ...
-3
votes
0answers
23 views

Everytime I remember I have tinnitis… my ears starts ringing. As long as I don't remember that I have tinnitis, no ear-ringing occurs. Why is that? [on hold]

Tinnitis is a "disease" that makes your ear do an annoying ringing sound... out of nowhere. After some minutes, it goes away. Then comes back some time later. Then goes away. Then comes back. On and ...
2
votes
1answer
21 views

Determine if two molecule structures are the same molecule (perhaps in different conformations)?

I have two .pdb files describing two (small ligand) molecular structures. I need to determine if these two pdbs describe the same molecule, perhaps in different spatial conformations. Is there a ...
12
votes
1answer
665 views

Can an organism exist as a single cell but come together as multi-cellular during certain times?

I am trying to remember a particular segment from a BBC special, in which there was single cellular species. However, at certain times all the individual cells came together to form a structure, not ...
3
votes
1answer
36 views

Is the ringing sound in the ears caused by dying ear cells?

I was recently watching the movie "Children of Men" (great movie) by Alfonso Cuarón. Now in a certain scene, the lead actor happens to be nearby a loud explosion. Later, when he complains about the ...
1
vote
1answer
20 views

connect three coding sequences with IRES

To express two proteins at once in mammalian cells, expression vectors carrying an IRES (internal ribosomal entry site) are available. Does anyone know any attempt to express three proteins using two ...
2
votes
0answers
13 views

What is the highest pressure at which plants can survive?

Inspired by this awesome question, I'm looking for the corresponding maximum: what is the highest air pressure at which plant life can survive? For example, Venus's atmosphere is about 90x as dense ...
-3
votes
1answer
21 views

What is the full form of all the Immunoglobulin? [on hold]

What is the exact meaning and full form of IGm IgG Iga etc. and I need some extra information about all the classes of IG?
-1
votes
0answers
23 views

Are there any scientifically proven effects of having many sexual partners?

First of all, I am sorry if anyone of you find my question offensive. Second of all, I am not talking about STDs here. And finally, I am also not talking about cultural perception here as well. I do ...
0
votes
0answers
32 views

Is there an organism which is “The Opposite of Hydra”?

My understanding is that if hydra is cut into pieces, each piece can evolve into a new hydra. What I'm looking for is whether there exists an organism with a this property reversed, that is, if two or ...
1
vote
0answers
8 views

How much oil you can get from a dead animal

This is purely speculative, but is there a formula to calculate how much oil you can get from 1 Kg of biomass? I've seen bioreactors in farms where they put dung, vegetable scraps, and all bio ...
0
votes
1answer
17 views

Bioinformatics - DNA binding, sequence-specific protein data

I am a computer scientist and we are working on protein function prediction algorithms. Right now, we would like to examine protein-DNA binding properties computationaly. For this, we would make use ...
0
votes
0answers
7 views

What does it mean a “H4K20me1 has a diffuse profile”?

From the paper: H2A.Z is representative of localized signals. H4K20me1 shows the typical behavior of chromatin modifications with a diffuse profile. What does it mean a 'diffuse profile'? Does ...
0
votes
0answers
4 views

Peak calling for TF and histone modification

I was viewing different methods for peak calling and came across two quite similar concepts but still different methods: MACS and SICER. The main difference is that SICER uses nonoverlapping sliding ...
-1
votes
0answers
10 views

Charges on the electrodes in a Galvanic Cell? [on hold]

As we know that Charge on the Anode is positive and cathode is negative. But in a Galvanic Cell These Charges are opposite As Galvanic cells Anode is Negative and Cathode is positive. Why is this so? ...
1
vote
2answers
44 views

In which phenomena does one gene pair hide the effect of other unit?

This question was asken in an exam, The answer they are saying is "Epistasis". But I think "Dominance" fits better, because it is not mentioned whether genes of same allele are to be considered or ...
1
vote
0answers
23 views

Can anyone ID this ant queen species?

It was found in Hong Kong! Below are a few basic information: Place: Hong Kong Habitat: Forest. I live very close to a mountain with lots of forestation. Where Collected: Found it in my window ...
2
votes
0answers
13 views

Partial Contribution By One Parent

For flowering plants, what might cause the genome size of offspring from a cross between 2 diploid parent of differing genome size to reflect only a partial contribution by the larger genome size ...
2
votes
0answers
14 views

Can ' functional' stress 'forced upon' a cell actually cause cell mutations when they divide and reproduce?

If a group of cells are forced to go beyond their regular biological parameters that they should be under given ' healthy' functioning and while existing in these stressed states some of the cells ...
4
votes
0answers
24 views

Why would a venus fly traps mouth that's still “chewing” die?

A venus fly trap produces leaves that act like traps for insects. A trapped insect is digested over several days. The trap then opens again to catch another insect. These traps regularly die off. ...
0
votes
1answer
10 views

Methylation Data for Erythrocytes (Red Blood Cells)?

Why is it that white blood cells (leukocytes) are highly characterized in DNA methylation pure cell line profiling, but I can't find any profiles of red blood cells (erythrocytes)? Is blood considered ...
0
votes
0answers
10 views

Nature vs Nurture in Rooster mating dance: Are roosters lame dancers because they never learned any better?

I've seen, read about, or heard several avian courtship dances, flights, songs, and other rituals. They are general very impressive, fancy, and beautiful. Roosters, by comparison, are quite lame. The ...
-2
votes
0answers
13 views

Mitosis Maths Question Chromosomes [on hold]

I just wanted to ask regarding mitosis... if a body cell starts with 24 chromosomes, then how many will the new cells have? Thanks, Bob.
0
votes
1answer
30 views

Why Do we close our eyes while sneezing?

Google says germs may fall on eyes from our sneeze but it happens all the time . Also it says it a part of contraction. What may happen if we sneezing wirh our eyes open ?
1
vote
0answers
12 views

can the regeneration mechanism be used in humans that of lizards?

how lizards grow their tail again like is there any mechanism or specific protein which helps them to regrow their tail? can the mechanism of regeneration be used in humans to regenerate our limbs is ...
-3
votes
0answers
16 views

After a night of drinking, why am I hungry for information? [on hold]

This is a tough question to phrase appropriately, but I will try my best. Last night, I had a small party at my house, and we ended up drinking a lot of alcohol, both beer and liquor. I was no where ...
0
votes
0answers
14 views

Is it better to eat something that is more or less related to humans?

My question is, would it be better to eat something like a sea cucumber or would be it better to eat a chimpanzee? Maybe this isn't a dichotic answer. Is it better to eat something in between, like ...
0
votes
1answer
16 views

What does NaOH do for the plating of Bacillus subtilis?

A book called Molecular Biological Methods for Bacillus called for plating Bacillus subtilis cells on LB-agar plates with the following components: A general-purpose medium containing per litre: ...
4
votes
1answer
24 views

Identifying flying insect from northern Poland / Baltic Sea area

Found during this year vacations at Baltic Sea (northern parts of Poland): I don't have a picture containing other object, for size verification, but I'd say, that it was 3-4 cm long. There were ...
-1
votes
0answers
13 views

Evolution of healing for burn injuries in mammals?

Our body had very specialized processes for healing burn injuries. Namely the process of blistering. My question is how this process for healing burns evolved considering how rare burns must be in ...

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