1
vote
2answers
51 views

Material recommendation: molecular biology for mathematicians and computer scientists [closed]

I am wondering if there are some introductory learning resources on molecular biology designed specifically for scientists with heavily math-oriented curricula (math/physics/computer science). They ...
0
votes
0answers
12 views

How many ATP can be bound to f1 of ATP Synthase?

Diagrams show a bunch of ATP being produced simultaneously, is this possible? Or is it one ATP per rotation of ATP Synthase?
3
votes
1answer
37 views

What is the substrate for glycogenesis?

In glycogenesis (i.e. the synthesis of glycogen), are sugar phosphates the direct substrates for glycogen polymerization? I would certainly think so since glucose is phosphorylated and then stuck onto ...
0
votes
0answers
20 views

How can plants be grown in hydroponics, and yet not handle too much water in soil?

It's pretty much common knowledge that plants planted in pots or soil that doesn't have good drainage can't be watered too much, or they'll "drown". Regardless of what actually happens, experience ...
3
votes
3answers
55 views

Is Einstein's mass energy equivalence ($E=mc^2$) relevant to biological systems?

I'm more than 100% sure that the kilograms I eat don't get directly converted to feces and urine. I'm sure some of it goes to regenerating tissue that is constantly being disposed as well, and maybe ...
4
votes
0answers
37 views

How do chromosome pairs get “paired up” for protein synthesis?

If my understanding is correct, during interphase a normal human cell will have 46 chromosomes scattered about in the cell nucleus. These chromosomes can be thought of as pairs: there are two copies ...
1
vote
0answers
41 views

What is this wood-infesting insect?

I have these insects in a very old wooden floor. I would like to know whether they are possibly termites, and if not, what they are. They are about 4 mm in length (and I've had difficulty taking a ...
5
votes
0answers
32 views

How to estimate heritability from breeding data

I have a lot of plant-breeding data (tens of thousands of results) that are composed of phenotypes of parents and offspring. The plants however went trough years of selection and it is not balanced. ...
-1
votes
0answers
24 views

Bubble Boy syndrome [duplicate]

I know that under normal circumstances, immunosuppressors are needed to mitigate the host body's immune reaction to the graft. However, people suffering Bubble Boy Syndrome have pretty much no immune ...
3
votes
1answer
36 views

How does an octopus eye react in free fall?

according to Wikipedia: Attached to the brain are two special organs, called statocysts, that allow the octopus to sense the orientation of its body relative to horizontal. An autonomic response ...
1
vote
1answer
26 views

Why do mutations in Drosophila dsx (double sex) affect both males and females?

Reason: Loss-of-function mutation of dsx gene in female embryo leads to production of a nonfunctional protein that fails to repress male specific gene expression. So somatic characters of both the ...
0
votes
0answers
22 views

How some Epigenetics characters can potentially be passed down through the generations

The (sperm +ovum)zygote is totipotent stell cell means all genes of the zygote's DNA are "on"state that can be switched off by differentiation process converting specific cells with different Jobs.So ...
1
vote
0answers
29 views

From an information perspective, are both strands of DNA necessary?

I am learning about the genetic code, replication, and transcription, and I have a question about whether or not both strands of DNA are really "necessary". In replication, at a high level, we are ...
0
votes
1answer
20 views

Thyroid hormone metabolism and excretion

My understanding is that hormones generated by the thyroid gland, including, for example, T4, are excreted and recirculated in the body through the digestive tract. The reason for thinking this is ...
0
votes
0answers
13 views

Does time in the perception of little creatures move faster or slower?

Little creatures, like flies, do also, like us humans, perceive time. But do events surrounding them move faster or slower?
3
votes
1answer
22 views

What does it mean for muscles origins and insertions to be the other way around in the right than left limb?

Herbert Srebnik writes in Concepts in Anatomy: In the right limb, the muscle's origin is proximal to the joint and the insertion is distal to it. In the left limb, the muscle's origin is ...
-2
votes
1answer
36 views

what is the difference and similarities between Antidote and Antibody?

I know that antibody is destroy Antigen and antidote is reverse of antigen.So,What are the similarities and difference between Antigen and Antidote? Are they same?
1
vote
0answers
25 views

Mendelian genetics - How can we infer the number of genes in play in this scenario?

So this is a practice question I got from school but I kinda lost here. So the question is: In Drosophila , four new recessive mutations have been found all of which produce purple eye ...
0
votes
0answers
15 views

Can overhydration cause a drop in hemoglobin?

I am trying to understand the mechanism by which overhydration affects hemoglobin and oxygen intake. Does the water first depletes the buffers such as ferritin storages? What about haematocrits? In ...
1
vote
0answers
21 views

Loooking for dataset of proteotypic and non-proteotypic peptide

I'm experimenting with peptide prediction using machine learning. I need some data for testing. I already have one dataset, but I need another one or two for verification. I'm looking for data for a ...
-1
votes
1answer
39 views

Why does cold kill humans but not bacteria? [closed]

Bacteria can continue like nothing happened after being exposed to low temperatures why doesn't this happen to humans as well? Why can't our metabolic machinery continue as normal?
3
votes
2answers
213 views

Why are sponges sometimes not considered multicellular?

I read somewhere (I can't find where) that there is no scientific consensus whether sponges should be considered multicellular organisms. It seems I don't understand where is the line between ...
1
vote
0answers
15 views

Measuring, using and analyzing skin resistance in kohms

What are ballpark ranges of skin resistance in Kohms for average men and their significance (for example 500-1000s = stressed vs 1000+ = fairly relaxed) What do various skin resistances in kohms say ...
0
votes
0answers
20 views

Are immunosuppressors necessary after a bone marrow transplant for Bubble Boy Syndrome?

I know that under normal circumstances, immunosuppressors are needed to mitigate the host body's immune reaction to the graft. However, people suffering Bubble Boy Syndrome have pretty much no immune ...
0
votes
2answers
71 views

What is this animal? [duplicate]

Can someone tell me what is the name of this one? Then I can check a little more about it.
-1
votes
1answer
48 views

Evolution & Celluar Chemistry [closed]

I'm new to this site but had a question on evolution, apologies if some of these questions seem basic but they are from a book i am reading challenging the role of chance in evolution. Taking the ...
4
votes
0answers
29 views

How much do urban pigeons move around cities?

Do they tend to live their lives in one area of the city or do they move around? For example, do pigeons born on London's Trafalgar Square live their whole lives centered around Trafalgar Square or ...
3
votes
3answers
273 views

How long could Earth's oxygen supply last if no new oxygen were produced? [closed]

I read in an article or heard in some documentary that there's so much oxygen in the atmosphere that even if all photosynthesis stopped, there's already enough to last us a long time. Is this ...
3
votes
0answers
54 views

Are plants really oxygen neutral?

This accepted and most upvoted answer to the question Does grass alone produce enough oxygen for life? claims that plants are oxygen neutral: Plants are oxygen neutral The question wording is a ...
0
votes
1answer
41 views

What is this little white creature?

Please identify this little and soft white creature. Since childhood I am seeing this things flying in my surroundings and nowadays they are seen occasionally.
0
votes
1answer
18 views

How can you develop a bacterial infection when taking antibiotics for another area of the body with a bacterial infection? [closed]

How can you develop a bacterial infection when taking antibiotics for another area? For example, "if someone was prescribed an antibiotic for a bacterial infection of the throat and while taking the ...
3
votes
1answer
57 views

What is a “monomeric polypeptide”?

In the sentence: "Bacteriophage (viral) polymerases are typically monomeric polypeptides". I know that polypeptides are chains of amino acids monomers. But what is a "monomeric polypeptide" and what ...
0
votes
1answer
25 views

Can ncRNA convert to coding RNA/mRNA by mutations?

DNA has transcribed into RNA (Non-coding). Can this RNA mutate and become a Protein-Coding one/mRNA? Have there been any such instances reported by scientists?
0
votes
0answers
14 views

Ewens-Watterson Test of Neutrality

The Ewens-Watterson test is one of the first test of neutrality (of no selection). Later came tests such as Tajima's D or Fu, Li's G and many other. Question Can you please make a description of how ...
3
votes
1answer
29 views

Any idea what this red plant is?

I live in South central Indiana, US, and these have just started appearing in the grass in my yard. I just bought this house last fall so I've never seen them. Anyone know what they are? Are they ...
1
vote
0answers
26 views

Why would worker bias sex-ratio toward workers?

This question prompts for explanation on a topic, an interpretation of this topic is given. A simplified question statement is also given at the end for those who do not wish to read. Topic In the ...
0
votes
0answers
12 views

Modeling a patient's parameters (SPO2, HR, BIS etc.) to their effect on the patient

I'm currently using code (C#) I wrote which creates a 3 compartment model to simulate the concentration $C_{p}$ of Propofol in blood plasma using the Schnider and Marsh pharmacokinetic models. I ...
1
vote
2answers
25 views

What is the difference between the neural tube and the dorsal ventral cord?

I was wondering what the difference is between the neural tube and the dorsal ventral cord. I know that the neural tube forms during embryonic development from the ectoderm layer that folds inwards. ...
0
votes
1answer
28 views

Why do people cut back on kilo-calories?

I am learning about specific heat in science and I learned about how the specific heat for water is called a calorie, but that is different to what is on the food label. On the food label, that ...
0
votes
0answers
24 views

why selecting cells after gene editing with CRISPR Cas9?

I am new to the CRISPR Cas9 genome editing system and I have the above basic question. Another way to think about this: what would happen if after cells are transfected, the cultures are left to grow ...
4
votes
1answer
72 views

Can you identify this animal?

It was in the bathroom, 2cm in lenght (or so). It has two small antenas on the head. I live on Balkan peninsula, inland.
1
vote
0answers
7 views

How does a higher channel density increase speed of propagation of an Action Potential?

If there is a higher density of sodium channels then there will more Na+ flux in the cell. So it's like trying to pass more material through a pipe and therefore the speed of action potential (AP) ...
0
votes
1answer
51 views

How do I tell if the mosquitos in my New York City apartment can carry Zika?

The species that carries Zika, A. aegypti, is unlikely to be found in New York. However, the related species A. albopictus is prevalent and quite concerning. So this question is focusing on A. ...
0
votes
1answer
44 views

What actually happens to the human body during fasting/starvation? [closed]

I recently came across a UN study which advocated that controlled fasting can be beneficial for the the human body and I am fascinated by stories of wilderness survival against the odds. It piqued ...
1
vote
1answer
61 views

How do harsh conditions cause an increase in the male birth ratio?

I've heard that in harsh conditions more human baby boys are born than girls because a bigger ratio of them will die before reproductive age. But in which aspects of the random gene combination while ...
1
vote
1answer
18 views

Isolating the gene of interest for protein production

For protein production, the gene of interest is inserted in an expression vector and introduced into a suitable host for expression. But how is the gene of interest for the desired protein isolated ...
1
vote
1answer
42 views

What are the characteristics of a living organism? [closed]

It seemed fairly basic at first, and yet I have to ask because even a quick Google search reveals that it doesn't seem to be quite so straight-forward anymore. After more research, I found multiple ...
3
votes
1answer
71 views

Species Identification - small insect

I found a few of these walking in the middle of the night (about 3 AM) on a wall in my room near the floor. They are at most a few millimetres long (no more than 2 I would say). I am living in Poland, ...
1
vote
2answers
52 views

Recessive is Dominant to Dominant?

If a gene has for instance three alleles, p, q, and r, then could p be dominant to q, q be dominant to r, but r be dominant to p? Can a gene that is recessive to one allele not be dominant to another ...
1
vote
1answer
30 views

How do mosquitoes orientate in the darkness?

An annoying mosquito (Culicidae) which kept me awake nearly the whole night lead me to this question. I have heard that mosquitoes can smell CO2 which could help them to orientate in the darkness, ...

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