All Questions

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0answers
4 views

Why does yellow appear the brightest colour to humans when that is not the wavelength at which our eyes absorb most light?

The rods in our eyes absorb most light at around 498 nm, which is towards the cyan side of green. We have three types of cones, maximally sensitive to wavelengths of around 430 nm (blue), 535 nm (...
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0answers
3 views

How is minute ventilation any different than ventilation rate?

The equation used to calculate both of these is the same: Tidal Volume * Breathing rate/Frequency of breathing. Then how are they any different ?
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0answers
13 views

Why does my face feel numb after eating an apple? [on hold]

Whenever I eat an apple (I don't know if only certain sorts cause this, unfortunately), my upper cheeks first feel flushed and warm, as though there is more blood flowing towards that part. Then, ...
1
vote
1answer
16 views

At What Rate Do Ions Leak Out of a Plasma Membrane Segment That Has No Ion Channels?

In reading about the purpose of myelin during action potential propagation, I came across a point of confusion. From what I understand, one of the primary "benefits" of myelin is that it aids in ...
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0answers
8 views

What is the smallest known viviparus

I want to know what is the smallest viviparus known at this time. I was Googling, but I can discover this animal. Thanks.
0
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0answers
7 views

Facial hair that turns black [on hold]

My hair on my face is fully gray, but recently I have been getting random black hair growing and they get infected
0
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0answers
16 views

Left or Right hand fingerprints relation between people

I am making a machine learning program for a project at school, where I would like to classify fingerprints (well depending on your answer I will have to change it) depending on wether its of a left ...
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0answers
15 views

How much can homologous organs vary?

I've got a very layman understanding of the difference between homology and analogy. It seems clear that analogous organs have pretty much the same function by definition, while homologous organs have ...
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0answers
11 views

Latest estimates for shortest and longest wavelengths of light visible by dogs?

Dogs (canis lupus familiaris) are dichromats, meaning that their eyes contain two types of cone, responding maximally to two different wavelengths of light, namely blue (429 nanometres) and yellowish ...
-1
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0answers
14 views

How could “evolution on a petri dish” be applied to production of pharmaceuticals?

Theres a popular video (https://youtu.be/plVk4NVIUh8) where a culture of bacteria is placed on a petri dish with gradually increasing concentration of antibiotic resulting in evolution of super-...
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0answers
17 views

White hair turning back to original color

At 88 years of age and with white hair, my hair has started growing back to brown about
0
votes
1answer
12 views

Tree identification - Sicily

I am trying to identify the trees in this image, taken in Siracusa, Sicily. This would be very helpful for my thesis project I am working on at university, so thanks for any help. Robert
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0answers
14 views

Count number of splitted groups within a phylogeny

I wondered if it whas possible within a newick tree to count the number of monophyletic groups even if intruders are splitting this group. Here is an exemple Let say you have the following three : <...
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0answers
17 views

Are there any ways to increase total body skeletal mass? [on hold]

I want my whole skeletal system to gain 5-10+ lbs. or so and look thicker, including the facial bones. Does HGH/IGF-1/etc. increase total body bone mass/volume/etc.? I have read some studies but can'...
-1
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0answers
15 views

Pronation of forearm

According to the figure below, the ulna and the radius are rotated together during the pronation of forearm. However, to my knowledge, the proximal radio-ulnar joint at the elbow is a hinge joint. How ...
1
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0answers
17 views

Do tarantulas and humans have the same mechanism for growing hair?

There's hair on my arms. Tarantulas also have hair on their arms. Is this the same type of hair?
1
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0answers
19 views

Why are Mules/Donkeys aggressive when faced with predators but horses are not?

I came upon an interesting quote after going down the rabbit hole on a variety of subjects. While deep in the data, I came upon this quote oat and farm animal owners likes to have mules with their ...
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0answers
13 views

Why do I feel suffocated when someone bends my fingers while sleeping? [on hold]

Yesterday, while sleeping my elder brother bent my fingers a little in backward direction and I felt difficult to breathe. Does anyone know why it happened?
2
votes
2answers
81 views

Is DNA actually like source code repository?

So after reading articles like "People Use Just 8.2% of Their DNA" etc., and thinking a bit... I got this idea: What if DNA is actually like a software source code repository? You know, it has "...
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0answers
15 views

Where do the oxygen bound in glucose vs the atmospheric oxygen go in cellular respiration?

I know that water is produced during glycolysis and oxidative phosphorylation and that carbon dioxide is produced during pyruvate oxidation and the Kreb Cycle. However, I'm not sure where the oxygen ...
1
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0answers
13 views

What can eating pink mold do to a healthy person (someone whose immune system is not weakened)? [on hold]

I've tried searching it up, but my research has yielded nothing very specific. This morning, I was eating a muffin. I noticed that there was a patch of bright reddish pink dough. I wasn't thinking ...
0
votes
1answer
16 views

What sauropod genera had a double row of chevron bones in the tail?

I know that Diplodocus is marked by the feature of having a double row of or "double-beamed" chevron bones in the tail, but how diagnostic is this feature if several other sauropods have it? I mean, ...
0
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1answer
16 views

Human Stem Cells and Disease

Can human stem cells be stored for use by future family members as a way to combat generational diseases like diabetes
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0answers
20 views

What would happen if all of my skin suddenly disappeared? [on hold]

If all of the skin on my body suddenly disappeared, what would happen? By skin, I mean the epidermis, dermis, and hypodermis. What would fall out? What would happen to the deeper tissues? And ...
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0answers
6 views

Can disorders involving involuntary muscle twitches and spasms have a hypertrophic and increased residual muscle tension effect?

Meaning disorders specifically like myokymia, myoclonus (positive and negative) and fasciculations. From the section of the literature I've seen, sometimes passing mentions are made when the disorder ...
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0answers
44 views

Why does it seem like there is very little disparity between races in regards to intelligence

There is numerous biological difference between human races, from height to average BMI to various organ size. Oddly however there is very little disparity in regards to intelligence (when accounting ...
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1answer
19 views

Selective breeding fluorescent sheep - possible?

I got into a small argument :-) Friends of mine try to draw fat line between "natural" selective breeding and applying molecular biology (CRISPR/Cas9) to put new traits in existing species. The line ...
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0answers
9 views

Does pain decrease when the cell's communication is amplified or cleared?

It's hard to form this question because the company doesn't really explain how their product works exactly! I'm not sure if the skeptic's site would be a better place but I'm starting in biology first....
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0answers
8 views

skin colouration in thalassemia

Now when i was studying about thalassemia, I read that anaemia is its major characterstic. I can understand that fact. But it was also written that the skin gets darker/pale. Wikipedia says that the ...
1
vote
1answer
17 views

Would intravenous insulin + glucose significantly accelerate glycogen synthesis?

Would an intravenous injection of insulin + glucose result in significantly quicker replenishment of exhausted glycogen stores than an injection of glucose alone? This is a strictly theoretical ...
-1
votes
1answer
25 views

Do violet potatoes contain more or less solanine than normal potatoes?

What is the solanine content of the violet potatoes? Is it more or less than in the normal potatoes?
4
votes
1answer
41 views

Backbone hydrogen bonds between adjacent amino acids in a protein?

Is it possible for two adjacent amino acids in a peptide to form hydrogen bonds between the backbone NH and CO? Are there any examples of such situations in proteins and how common are they? If ...
-3
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0answers
13 views

I in a nerve if Sodium Potassium pump is blocked then which of the following most likely to be happen [on hold]

Plz answer this question anyone get answrr plz tell And write.
1
vote
0answers
23 views

Absorbance anomaly

The standard concentration for absorbance of 1 for ssDNA is 33 ug/ml, while for RNA it is 40 ug/ml. I can't find the reason for the difference in this value for these two macro-molecules. My professor ...
-2
votes
0answers
31 views

How many genes do viruses have? [on hold]

What is the range for the number of genes any virus contains? What is the average? Are there any viruses that contain only 1 gene?
-1
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0answers
9 views

The different modes of seed dispersion [on hold]

Write a short note about the temporal and spatial dispersal of plants seeds citing one example in each
0
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1answer
22 views

‘Inoculum’ vs ‘inoculant’ – which one is it?

I’m currently writing the report of a study which looked at commercial soil inoculants (Rhizobium sp.). However, I’m confused about the differences between the words inoculum and inoculant and when to ...
-1
votes
0answers
10 views

What is the segregation pattern from this cross? [on hold]

I would like to know how to properly do the cross between these genotypes. I don't exactly how the AaBbCc produces 8 gametes and the AabbCc Produces 4 gametes I do understand if we multiply both ...
-2
votes
0answers
21 views

How much space does an sea turtle need in an enclosed space to live?

How much space does an sea turtle need in an enclosed space (like a zoo) to live? Or, more broadly, how much space does an animal need in an enclosed space (like a zoo) to live?
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0answers
11 views

What is meant by 'fixing' of an antigen presenting cell?

Can someone please explain what does 'fixing' of an antigen presenting cell mean?
-2
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0answers
10 views

How to compute the expected number of base pairs in the telomere after a number of mitotic divisions? [on hold]

One of the chromosomes in a nucleus has a telomere which contains many repeats of the base sequence TTAGGG. This chromosome was extracted from four different cells and the total number of bases in the ...
-3
votes
0answers
24 views

What does chrM stand for in a VCF file? [on hold]

I'm guessing the M is for Mitochondria, but Googling has not helped me to confirm this question. The wikipedia file for Variant Call Format also was not helpful.
1
vote
0answers
17 views

which enzyme phosphorylates sodium potassium pump?

I know that Na+/k+ pump possess atp-ase function; so the pump will hydrolyze ATP into ADP + Pi. And I see in a figure that the pump is phosphorylated but couldn't really find which protein catalyzes ...
2
votes
0answers
29 views

Why eyebrow growth stopped after it has specific length?

When comparing with hair that grow forever after we cut it, why eyebrow not. what gene measure current length of eyebrow so it stop to grow after specific length.
1
vote
0answers
10 views

Issues with Mutant Allele Fraction Preparation

I am currently trying to prepare mutant allele fraction (MAF) solutions for an allele discrimination qPCR assay. I began with plasmids cloned with the different desired alleles. I amplified the the ...
0
votes
0answers
21 views

Intein Splicing

Currently I am trying to read and understand this paper on intein splicing. https://sci-hub.tw/https://www.ncbi.nlm.nih.gov/pubmed/22001202 However, I'm a little confused with Figure 4. Why do the ...
0
votes
1answer
33 views

What is the darkest color human bowel movement can become? [on hold]

I assume a healthy human, with usual nutrition, without using any drugs or supplements.
-1
votes
0answers
31 views

Why is the DNA structure a double helix? [on hold]

why DNA not mads any other linear structure other than double helix which thing responsible for DNA double helix.
3
votes
1answer
67 views

What kind of insect eggs are these (found in Malaysia)?

What kind of eggs are these? Found outside on a window, when I removed them via scraping, whitish oozy fluid came out. I've seen this before but they've been appearing more frequently, always appear ...
-1
votes
0answers
16 views

Could a conscious life form theoretically reproduce asexually?

Could an animal that is conscious/aware/sentient reproduce asexually, (for instance, through binary fission?) There's probably some issue with this, so I just want to make sure--could it happen? It ...

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