0
votes
0answers
2 views

Is there a logical problem between biology taxonomic categories of domain and kingdom?

A tree of life should be diverging right? If the current hierarchy of biological taxonomy is now: "all life, domains, and kingdoms followed by phylum, class, order, family, genus, species." And if ...
0
votes
0answers
9 views

Are seeds considered living or non-living?

I was driving to school not too long ago and I was thinking of an easy way to explain "biology" to someone. I asked myself "what is biology?" and of coursed I answered "the study of life" and then I ...
1
vote
0answers
7 views

Which are the last cells of the human body to die?

When somebody dies, which are the last surviving cells of his/her body? Those of hair, nails, or some other obscure but resilient cells? Shedding light on why and how they are so vital might boost ...
0
votes
0answers
8 views

Optimum gibson assembly overlap length

Does anyone know the optimum length of overlap your primers should have to your vector for gibson assembly. Most manufacturers say to do at least 20 bp on both side but don't give a maximum. Sometimes ...
0
votes
1answer
12 views

Assuming if height was fully determined genetically, what would be the concordance between monozygotic pairs?

I fully understand the differences between monozygotic and dyzogtic twin pairings, but I wondered how I could put into words the reasons why the concordance would be very high. Derived from same ...
-2
votes
0answers
10 views

Could humans metabolize gasoline? [duplicate]

Gasoline is mostly made of organic compounds/fats/oils. Food is also made mostly of similar organic compounds. Therefore, would humans be able to metabolize gasoline, or some of its components, for ...
0
votes
3answers
17 views

What is the role of TATA box in transcriptional regulation?

Now I know what is the TATA box, but I don't know what is its role in transcriptional regulation.
2
votes
0answers
13 views

Question about Enzyme Inhibition in relation to Aspirin

I've been trying to learn a bit more about pharmacology, so bear with my ignorance. In short, I see that aspirin (in part) works by inhibiting cycloxygenase isoenzymes and that this inhibiting is ...
0
votes
0answers
7 views

Did Cyanobacteria alone create the oxygen in Earth's atmosphere 3.5 billion years ago?

In other words, is the conveniently close-to-Californian-Universities pools of such representative of accepted theory. With the immediate follow-up question, when did the much more impressive amount ...
1
vote
0answers
2 views

What is a rough estimate of CO2 saturation for high-yield or high growth rate plants?

Naturally, plants have individual photosynthesis capacities, but it would still be interesting to get a general picture of CO2 saturation levels for some common cultures. Where lies the optimal yield, ...
2
votes
0answers
3 views

At which voltage will the conductance decrease due to the narrow pore in a voltage-gated potassium channel?

If you have a voltage-gated potassium channel that do not inactivate, at which voltage would you see decrease in ion conductance related to the narrow path in the pore? With that said I know that in ...
0
votes
0answers
21 views

Can sleep be replaced by chemical supliments?

If adenosine makes a person sleepy to rebuild chemicals in the brain, than is it possible to inhibit adenosine and externally produce and inject the needed chemicals?
0
votes
2answers
21 views

What kind of fish are these?

This should be pretty easy. We have a tropical fish tank, and among a few other species we have an adult pair of these guys. The female is a live-bearer, and seems to be giving birth to two young at a ...
0
votes
0answers
12 views

What is the lowest temperature an organism can survive?

It seems that reproduction isn't possible below -20°C, but bacteria can be store well below that. What is the lowest temperature a microorganism can be stored, theoretically and experimentally? I ...
0
votes
1answer
11 views

TRANSFAC Matrix.dat retrieve count matrix using BA or CC field

In the TRANSFAC Matrix.dat most of the motifs are given in the form of count matrix, but a few of them are given as some kind of frequency matrix. Those aren't ordinary PWMs because rows don't sum to ...
0
votes
1answer
10 views

iPSC in drug discovery

Pluripotent stem cells are very popular and lots of research has been conducted to use these cells as a tool for drug discovery. My question is how many years would it theoretically safe is we could ...
1
vote
2answers
106 views

Genetic mutations and new alleles

Amongst silent, nonsense and missense genetic mutations, is the latter the only one that leads to the creation of new alleles? If we define alleles as a specific form of a gene, and a gene as a ...
0
votes
0answers
10 views

Are there any reliable studies about colors and emotions? [migrated]

It is rather common knowledge that black and yellow indicate danger, blue trust, green and red appetite, warm colors warmth, and cool colors cold. Please, recommend me any studies or literature about ...
0
votes
0answers
9 views

Tango receptors in worms

Do all parasitic Worms (parasitic platyhelminthes and nematodes) lack tango receptors? I read that the parasitic nematodes lack tango receptors on the surface of their body. Is this true for all the ...
0
votes
0answers
17 views

Is it legal to send animals for near spaceflight research? [migrated]

For biology purposes, is it legal or not, like using crickets and mouse as subjects to be sent near space (Upper Stratosphere) High Altitude Balloon
1
vote
0answers
15 views

Can you replace glucose with glycerol in cell media?

In order to feed an animal cell in process called Respiration, can I replace Glucose with Glycerol? The Equation bellow: Glycerol + Oxygen -> Water + Carbon Oxide
0
votes
0answers
16 views

What a cell needs to survive? [on hold]

I'm looking specifically at animal cells. I'm not sure if it needs only Glucose and Oxygen for Aerobic respiration.
0
votes
0answers
22 views

If your atlas is out of alignment, will the rest of your spine be out as well?

I just found out about this association called Nucca. Basically, they are a chiropractic association - their whole idea is that if your atlas is out of alignment, then the rest of your spine is also ...
-3
votes
0answers
27 views

Can large snakes eat a person?

I was wondering if you could tell me whether it is possible for a very large snake like a python or an anaconda to eat a person, i.e., an adult or young male. If it did manage to swallow them what ...
1
vote
2answers
26 views

What is a “homologous pair” of chromosomes in cross joining or cross over?

I never understand if the chromatids attached at the centromere is a homologous pair, or the male and female chromosomes?
0
votes
2answers
45 views

What is meant by “Expression” of Non-Coding RNA?

I was having a look at lncRNAdb and its help says: The ENCODE project gene annotation list, GENCODE, has predicted that the human genome contains 14,470 lncRNAs whereas only a small proportion of ...
7
votes
4answers
838 views

Why would lethal genes evolve?

I've been reading through 'The Selfish Gene' by Dawkins. At a few places in the book he states that incest is damaging because it would give a very high chance of lethal recessive genes becoming ...
0
votes
0answers
16 views

Why GH is tropic and non tropic?

I was wondering why Growth Hormone (GH) has both a tropic and a non tropic effect. Maybe it does have a tropic effect because it stimulates the liver to secrete insulin-like growth factors (IGFs), but ...
0
votes
0answers
9 views

SSR Association Mapping [on hold]

I do association mapping of SSR with the help of the bioinformatics tool "Tassel v 2.1". Can any one tell me about Ls Mean in GLM. Actually, when I click on "add Ls Mean data" for output the software ...
1
vote
1answer
22 views

Is there a difference between “Alpha Helix” and “Alpha subunit”?

In my biochemistry textbook the terms alpha helix and alpha subunit are both used. Are these two terms synonymous? For instance, hemoglobin has an alpha and beta subunit, are these the same thing as ...
-1
votes
0answers
17 views

peritoneal dialysis Vs Hemodialysis?

Their are basically two types of dialysis: 1.peritoneal dialysis 2.hemodialysis, My Question is Why the peritoneal dialysis needs to be carried out on everyday BUT hemodialysis is carried out on only ...
0
votes
0answers
20 views

Complementing back the expression of a knockout gene

I have a human cell line (Huh7.5, hepatoma-derived) in which Ago2 gene has been knocked out by the Crispr/Cas9 technology. I checked the effective gene editing by sequencing and I also confirmed the ...
0
votes
0answers
23 views

How do cells grow (ie. gain mass)? [on hold]

I have some basic knowledge of the cell cycle. However, I don't understand how cells grow in the Gap phases. How do cells grow? And how does consumed food transfer mass to cells?
1
vote
1answer
32 views

Diabetes Mellitus and renal failure?

I have studied that Diabetes Mellitus leads to kidney failure and that this is because of the damage to the blood vessels (especially the blood vessels in the kidney) due to high levels of blood ...
-1
votes
0answers
34 views

Biological species concept [duplicate]

I could not understand a portion of an article I was reading. It was about biological species concept and it said ' There is difficulty in the application of biological species concept in those ...
1
vote
1answer
38 views

Is there nothing such as NADPH2? [duplicate]

I have gone through various sites and some say there is NADPH2 and some say there is no NADPH2 there's only NADP+ ...WHich is the correct view....Please dont mark this answer as duplicates since I ...
1
vote
0answers
17 views

Effect of increasing Extracellular Na+ Concentration on resting voltage and likelihood of an action potential of occuring

If you increase the extracellular Na+ concentration how will this effect the resting voltage and likelihood that an action potential of will occur? Please explain using the Goldman–Hodgkin–Katz ...
2
votes
0answers
40 views

Guide to learning about Population biology / ecology / dynamics for a non-Biologist

I'm an applied mathematician who works in the field of feedback control systems but has been becoming interested in looking at population biology (e.g. Lotka-Volterra, Mathusian growth,etc.) from a ...
1
vote
1answer
231 views

Where does female ejaculate actually originate from?

It's common knowledge that it's released via the urethra, but where does it originate? If it doesn't come from a part of the clitoris, then why is the clitoral glans called the clitoral glans? How ...
0
votes
1answer
20 views

Do antagonist-receptor complexes get absorbed into the cell?

My understanding is that normally, a neurotransmitter binds to a receptor and then that ligand-receptor complex gets absorbed into the cell and either degraded or recycled. So does the same thing ...
1
vote
1answer
35 views

Why is the left hand bigger than the right hand? [on hold]

I've noticed that the left hand is bigger than the right hand, more precisely - I don't know whether it is really bigger or just more flexible? I compared the hand span of the left hand and right ...
2
votes
1answer
51 views

Programs/software to graph biological data [on hold]

I am curious about what sort of programs people in my field of academia are using to graph their data. I am a master student in biochemistry, and have more or less only used excel (on rare occasions I ...
-2
votes
0answers
33 views

Why has DNA evolved into a double helix? [on hold]

What is the reason that DNA evolved into a double helix? Does it still evolve?
1
vote
2answers
55 views

What makes DNA sequences most different/recognizable from a biological perspective? [duplicate]

We can pretty easily quantify the amount difference between two different strings/sequences of characters. For example, if we take the words trebuchet and trebucket, we can say they have a Levenshtein ...
0
votes
0answers
24 views

How to search for all human diseases associated with a inversion on chromosome 22?

Is there any way to search for all diseases that associated with inversions on chr22? I found some online research databases like OMIM and disgenet but I don't know the correct nomenclature on how to ...
-5
votes
1answer
37 views

Is DNA of all animals made of the A,T,C,G blocks? [on hold]

Is it true that DNA of all animals is made of the A,T,C,G blocks?
-4
votes
2answers
29 views

Why can't proteins make copies of themselves? [on hold]

Why is it impossible for proteins to make copies of themselves?
1
vote
1answer
33 views

Once in the membrane, why don't proteins move?

I understand that based on their tertiary structure, intrinsic proteins have Hydrophobic [polar] R - Groups on their Surface and that they 'interact with the hydrophobic core of the cell membrane to ...
1
vote
0answers
12 views

Can plant roots absorb dissolved oxygen from water, or do they require actual bubbles in the water?

Plant roots generally require some exposure to air. Deep water culture is a form of hydroponics where plants' roots are left to soak in water. To keep the roots from "suffocating", most online ...
1
vote
1answer
21 views

T7 vs pBAD promoter strength

How do pBAD and T7 promoter strengths compare when pBAD is induced under conditions which would lead to its highest strength? Are there any papers that compare the two inducible promoter systems?

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