0
votes
0answers
21 views

Does too much salt in wound cause problems? [on hold]

OK, everyone has the experience of eating too much salt and getting a slight headache. But assuming somebody's injured and his wound (you can assume however large you want the wound to be) is soaked ...
3
votes
0answers
84 views

Is a single cell “irreducibly complex”?

(sorry if the title seems like flame-bait - but it's a real question). I'm trying to understand what could have come before the first cell (What are the "minimum requirements" for a single ...
1
vote
1answer
54 views

Symmetry in animals [duplicate]

Is symmetry in animals due to DNA or natural selection? By symmetry, I mean the left side is an almost (not perfect) reflection of the right half. Is this due to DNA trying to balance the two half or ...
0
votes
1answer
41 views

Find the concentration of free receptors in a solution of 90% free ligand and 10% receptor-ligand complex, knowing only the value of kD

I could use some guidance on how to utilise the equation for the disassociation constant kD to find the concentration of free receptors [R] in a solution containing 90% free ligand [L], and 10% bound [...
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 ...
0
votes
0answers
23 views

What Journals include raw experimental data in publication [migrated]

I was reading an article from Nature Immunology and found that the journal actually includes all the raw data for each figure. I found such practice very helpful, since we can re-analyze the raw data ...
1
vote
1answer
239 views

sodium chloride and amylase activity

So, I did an experiment on the effect of sodium chloride on amylase. and I found out the higher the concentration, the slower the activity. Therefore, is it valid to make the assumption that when we ...
1
vote
0answers
29 views

What is the percentage of true bugs compared to all animal species on the plant?

Also, what is the percentage of True Bugs compared to the insect population? I’m writing a children’s book on bugs and I’m comparing the true bug to the insect. All population info seems to combine ...
0
votes
1answer
29 views

Distance to source populations and/or environmental gradients?

How do you disentangle the effects of distance to source populations and environmental gradients when the environmental gradient occurs in the same direction as the source population? For example, ...
2
votes
2answers
206 views

Coalescence time: Is it different for haploids and diploids in population genetics?

I'm trying to model Cyanobacteria cells divergence in 2 populations with mutation rate $-\mu$ and I need to verify my model with a valid theory. I don't have much biology background and all the ...
1
vote
0answers
18 views

Is blunt end repair and A-tailing necessary when adaptors can be custom made?

I'm planning on creating a RADseq library, which naturally involves digesting genomic DNA following P1 adaptor ligation. I've read a few protocols that require any over-hangs resulting from ...
0
votes
0answers
20 views

Non-malignant cells can still be cancerous?

Say that I am classifying melanoma tumor cells and want to determine of this population which are malignant and which aren't. From a genetic and transcriptional perspective, I could characterize these ...
4
votes
2answers
116 views

Why don't antibodies generally bind to food and drugs?

Are these excluded thru central tolerance? What if you ingested something with a unique molecular structure that you hadn't ingested before?
0
votes
0answers
17 views

Co-dependency between carbohydrates, fats and protein in the mammalian diet?

Following up from the question Are carbohydrates an essential component of human diet? I am interested in knowing more specifically how carbohydrates, fats and proteins are linked in the mammalian ...
0
votes
0answers
13 views

Dosage Compensation?

Why is there dosage compensation if you can have the Law of Dominance that can come into play? And if a chromosome is inactivated, then shouldn't people with chromosomal abnormalities be normal? ...
0
votes
0answers
31 views

anabolism in plants

The question is as following: Which substance has the greatest contribution to the anabolism of glucose in plants. A- Oxygen (O2). B- Water (H2O). C- carbon dioxide (CO2). The official answer given ...
1
vote
1answer
37 views

Can salt-water frogs survive in normal water (A well)?

I don't know much about frogs, but there seem to be salt water frogs. 1) Are there such things as salt water frogs? 2) Are there frogs that live in the sea? (in reference to Vivekananda's quote) 3) ...
7
votes
1answer
109 views

Synthesis of Fatty Acids Longer than 16 Carbons

I understand that the human body when performing Fatty Acid Synthesis can synthesize only until C16 (palmitate). However the ER has desaturases and elongases. I know that desaturases are used to add ...
6
votes
2answers
71 views

RNA processing in eukaryotes

Why does post-transcriptional processing of eukaryotic mRNA involve addition of a 3' polyA tail, rather than one of polyU, -G, or -C?
5
votes
1answer
26 views

What happened to the gypsy moth epidemics in the Northeast US?

I remember that back in the 1980s, 1980-1984, gypsy moths were a veritable plague in the Northeast United States. They were literally everywhere. Sidewalks were covered with their squashed bodies (of ...
1
vote
0answers
16 views

Were Neandertals as Hairy as We Are?

What I mean to say regards facial and androgenic hairs. There are many theories as to why some people have both kinds of hairs, while others have one or the same and others still have neither. The ...
6
votes
1answer
98 views

Can microdialysis be made in Drosophila melanogaster?

I've asked this before in stack overflow's cognitive science community, and someone recommended me to ask here: I've found a couple of studies using microdialysis on insects, but didn't found any in ...
0
votes
2answers
42 views

How did scientists establish the reactions that occur in metabolism? [on hold]

How did scientists establish that macromolecules like proteins, carbohydrates and lipids are synthesized from other molecules with intermediate products by living cells. Did they observe this under ...
1
vote
0answers
45 views

If the liver can regenerate why can alcohol abuse permanently damage it?

The liver is a fairly unique organ in that it has the ability to regenerate itself even if parts of it are removed/damaged. It is a well known fact that continual alcohol abuse damages the liver and ...
0
votes
0answers
22 views

Bio Project, Housekeeping promoters, high C-G count, vs tissue specific?

I have a research biology project to do, one part that I'm doing is essentially comparing the sequences of different organisms and based on the sequences am describing whether that gene has a ...
0
votes
0answers
19 views

How is signalling disturbed in trophoblastic cancer cells?

Trophoblastic cancer seems to be a form of growth that no longer responds to the neural signals which try to inhibit them. Can someone please explain whether experiments have been performed as to how ...
-3
votes
0answers
12 views

Whose Antibodies produced against allergens [closed]

I want to know answer in hurry bcoz 24 July is my test so I am prepared for neet entrance examination.so Pls help me
1
vote
0answers
12 views

Martian Abiogenesis?

In the Miller-Urey experiment the probability of the chemical origin of life under (hypothetical) early Earth atmospheric conditions were assessed. For that water, methane, ammonia, and hydrogen were ...
0
votes
2answers
46 views

What is the meaning of a reported OD600 value?

I can't find a reference that explains what, for example, OD600 = 0.1 means. For example, Wikipedia states OD600 is an abbreviation indicating the absorbance, or optical density, of a sample ...
2
votes
1answer
119 views

Is there a genetic reason explaining the difference of the height of male and female?

The male and female height difference seems to be around 1.08 if all cultures are counted from these stats: https://en.wikipedia.org/wiki/Human_height Can this ratio, 27/25, be explained by genetics ...
4
votes
2answers
57 views

Capture recapture for only two visit assuming a open population model

I have a study system where I’m doing a capture recapture analysis. I mark fish in one year and I’m recapturing a subset of them the next year. I only have 2 capture events. Since a lot of time has ...
-1
votes
1answer
25 views

Product of reaction between HCl and bile [closed]

In the mammalian digestive system HCl is the main acid and bile is the main alkali. What is the product of the reaction between these two chemicals?
-1
votes
0answers
34 views

Why does female's age of puberty inform on mating system?

Reading from Does increased calorie intake cause increase in libido in humans?, @AlexStone says: I'm aware that humans have a dual mating strategy - somewhere between pair bond and casual mating. ...
2
votes
2answers
34 views

Function and expression of pseudogenes

Can pseudogenes be transcribed into mRNA and translated into functional proteins, or should they be regarded as functionless mutated genes?
6
votes
1answer
52 views

Why don't bacterial cell walls prevent bursting when attacked by the complement?

The complement system creates pores in cell membrane which leads to influx of lots of water thereby causing lysis of bacterial cell. But what I fail to understand is that if bacteria have cell walls ...
0
votes
0answers
14 views

Is artificial control over neural transmission possible?

We know that neurons transmits electrical signals. At the present we have instruments to observe neural transmissions, but is it possible to interfere in its transmission from outside electrical ...
0
votes
0answers
7 views

How do I test if something will have an adverse effect on marine life?

I want to test a variety of different substances on water, but not with any life inside the water. How do I test if the substance will have a bad effect?
2
votes
1answer
46 views

Identity By Descent vs Identity By State

Background The concepts of Identity By Descent (IBD) vs Identity By State (IBS) are central in population genetics, yet I fail to fully wrap my head around the definitions. You can find examples ...
7
votes
2answers
774 views

Does breath-holding cause permanent brain damage?

My question is: Does voluntarily holding your breath at atmospheric pressure for a few minutes can cause brain damage? I'm talking about periods of time around 3 minutes. I've read there are some ...
1
vote
1answer
81 views

How can I find the most studied SNP of a gene?

How can I find the most studied SNP of a gene and diseases that the most studied SNP has been related to? I search in dbSNP database but I can't find it. What is the process?
0
votes
1answer
14 views

Catalytic Triad of Serine Proteases

Is serine considered an acid in the catalytic triad involved in the mechanism of action of serine proteases? It is donating a proton to His but I am not sure if this really qualifies as an acid?
-1
votes
0answers
43 views

Is there an evolutionary purpose for postpartum depression in human females? [on hold]

Essentially what the title says...It seems odd that at the very stage in which new life is supposed to be protected, we see new mothers at a higher risk for particular kinds of mental illness (...
0
votes
3answers
207 views

Do chromosomes uncoil in interphase II?

During interphase II, there is no S phase in which DNA replicates. However, in this stage, do the chromosomes remain wound? Or have they unwound into chromatin form, and recondense during prophase II?
7
votes
1answer
106 views

How many dinosaur genes are in a chicken genome?

I read recently that we can "work back" to a dinosaur by selectively turning off certain genes in chickens, and we were able to create a chicken with a snout instead of a beak. How many dinosaur ...
6
votes
1answer
115 views

Did any dinosaur molt?

Like snakes or lizards, did any dinosaur molt ? if yes, have we any proof of it ?
0
votes
0answers
9 views

Strategy for tree and shrub identification

I often find it difficult to identify trees and shrubs even though I have many handbooks and manuals on trees and shrubs in my area (New England). The typical problem is that the species is not in the ...
3
votes
2answers
63 views

Codon tables and the wobble hypothesis

In E. coli, there are only 47 different tRNAs but 61 potential anticodons. This is because, from what I understand, the third base of the anticodon can pair by wobble rules. However, it is known that ...
4
votes
2answers
180 views

Redundancy of the genetic code

One particular codon codes only for one amino acid, but an amino acid can be coded for by several different codons. Now according to the genetic code, the codon UUU ...
4
votes
1answer
1k views

How does a Plasmodium move?

Plasmodium sp. does not have any locomotory organs. So, how does it move? What biochemical process allows it to move?
0
votes
0answers
13 views

How can I measure the curvature of bird's beak on the field?

I'm wondering if there is a standard tool to measure the bird's beak curvature. It seems that a spherometer wouldn't work because the beaks that I'm measuring are not circular but more parabolic. ...

15 30 50 per page