All Questions

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0answers
3 views

Do animals with their eyes ~180 degrees apart have depth perception?

Lots of animals have their eyes more on the side of their head, like an octopus or a parrot. Are animals with eyes more on the side able to tell the depth of objects at different distances? It seems ...
0
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0answers
3 views

Is this likely to be a type of fruit fly?

I live in Taipei, and these flying insects are about 3 millimeters long (body length). They are very active when it's over roughly 24C indoors, and will fly, land and run around randomly on ...
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0answers
5 views

Is creb level linked to cancer

I am just wondering if there is any evidence the overall proteome CREB transcript level is linked to cancer. Most likely since it is so Central to the underlying pH driven process.
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0answers
5 views

Can humans read thoughts through technology?

Can humans read thoughts through technology? Is there a way that humans can correlate the words a person thinks with the specific ideas that they portray or know what the words are themselves?
2
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0answers
7 views

Can organ-accumulated iron get shed again?

Hemochromatosis can lead to an accumulation of iron in some organs. If the accumulated amount is not too high, will it go down again upon correction of blood iron levels?
-2
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0answers
11 views

Open problems in Ethology

What are currently some open problems within the study of animal behaviour (zoology, ethology)? I am thinking specifically of theoretical questions. For example, observations may have noted a ...
0
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1answer
19 views

Why HIV doesnt spread through vectors?

The HIV spreads only through body fluids. If a mosquito bites and HIV infected individual and then a normal individual , will the virus spread to the new individual .
0
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1answer
14 views

If the effect of increase CO2 in the air has a negative effect, why doesn't decreased CO2 have a positive effect?

I recently asked a question about whether there were studies on the effects of reduced CO2 level air and got what sounds like a good answer: Are there studies on the effect of reduced CO2 levels on ...
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0answers
14 views

Pectinase and Apple

I did an experiment on the effect concentration of pectinase of volume of apple juice produced (rate) and theoretically, as concentration increases,volume produced will increase. However, in my ...
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0answers
14 views

ATPase vs ATP synthase AND glucose vs ATP

Why is ATPase used interchangeably with ATP synthase? This is from my bio textbook: "The phosphorylation of ADP to ATP is also catalysed by ATPase and requires about 34 kJ of energy." In class, I ...
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0answers
34 views

What makes the flowers glow?

I had learnt in a plant biology course that, all the flowers are actually originating from leaves, with several mutations. I wonder what makes a flower sparkly like this. Photos belong to a ...
0
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0answers
12 views

Are some fingers naturally capable of quicker reactions than others?

Can index fingers react faster than thumbs or vice versa? Or it is the same? Or is it individual? Model case: In some game, I only need two fingers to control the game by fingers placed in bottom ...
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0answers
8 views

Contracting mouth muscles as reaction to taking in specific food items

When eating very specific food items, especially confectionery like (salty) liquorice, (it feels as if) the muscles of my mouth contract, right when it hits my tongue. Does anyone know why this ...
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0answers
17 views

What is the status of the “Free Energy Principle” as a theory of living organisms?

The free energy principle states that biological organisms maintain their order by minimizing a function called variational free energy (VFE). While it is the case that the minimum to VFE also ...
0
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0answers
7 views

Do memory B cells communicate?

How do memory cells(B-cells) encounter pathogens? This question talks about how most of the memory B cells reside in the spleen and that upon a reinfection, produce antibodies which then circulate ...
-1
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0answers
13 views

Lab question magnification

when viewing an organism under 40x objective lens described above, you estimate 12 organisms could fit across the dfv if they were laid end to end and 30 could fit if stacked side by side. what is the ...
-1
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0answers
8 views

What does (G+) (G++) in terms of male mutation rate and male-heterogametic XY-system?

I have absolutely no idea what they mean with G+ and G++ in the exercises in the attached picture. I have searched the whole Internet and the lecture slides for this but I think I am going crazy. Has ...
0
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0answers
11 views

Yeast integrating vectors: where to cut?

I understand that yeast integrating plasmids (YIps) must be linearized in order to promote homology-directed recombination. However I don't quite understand where. In the end, the external regions of ...
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0answers
8 views

How to use VMD command line to assgin color to atoms based on index?

I know how to use the GUI "Graphical Representations" to assign different colors to different atoms: But how can I do this using a command line?
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0answers
15 views

Is it possible to remove cyanobacteria from rainwater without killing it?

My collected rainwater has a pronounced blue-green tint. I presume that this is due to the presence of Microcystis or another planktonic cyanobacterium. Is there a way to remove the cyanobacteria from ...
-2
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0answers
12 views

is this a buffer system?

Deionized water can have a pH of 7 and considered neutral. If an acid (i.e. HCl) is added the pH quickly decreases. If a base is added the pH quickly increases. Is this a buffer system? Why or why not?...
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0answers
10 views

Can a persistent calorie surplus combined with exercise affect bone mass?

Say I ate high calorie diet for a long time. I also exercise sparingly while combining the extra calories. The goal isn't the muscle but the bone -- I want my overall bone mass to increase. I have a ...
0
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0answers
17 views

How did Smith et al 2004 deal with missing HI [Hemagglutination Inhibition assay] values and HI values <10?

In the scientific paper "Mapping the Antigenic and Genetic Evolution of Influenza Virus's" Supporting Material, Smith et al write about determining antigenic distance Dij. However, I don't understand ...
1
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0answers
15 views

How is the right amount of nucleotides synthesised during homologous recombination?

I'm reading about homologous recombination in the context of double-strand break repair. It seems like the trick is that around the break, homologous recombination uses a template duplex to generate ...
-1
votes
1answer
22 views

Identifying statistically significant gene rich and gene poor regions

I am just wondering If there any adapted way of Identifying significant gene rich and gene poor regions in each chromosome for a given genome say mm10?
1
vote
2answers
38 views

Why is xylem a tissue and not an organ?

My textbook "CGP AS-Level Biology Exam Board: Edexcel Complete Revision & Practice" says xylem is a tissue. Then I read from this website that "[Xylem's] major components include xylem parenchyma,...
0
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1answer
24 views

Why are lipids not considered polymers? [duplicate]

I'm struggling to understand why lipids are not considered polymers—if the fatty acid part of lipids consist of repeating units, wouldn't lipids be polymers?
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0answers
24 views

Do primates have genetic predisposition to dominance hierarchies

I’m looking for some evidence to prove (or disprove) that primates are genetically predisposed to dominance hierarchies. I would appreciate any pointers/references to scientific literature. PS: The ...
1
vote
4answers
76 views

Does sex-chromosomes exist in all the cells in a human body?

Each cell of a human body contains 46 chromosomes. So every cell must contain a pair of sex-chromosome. Is it true? Then a cell of a male and a cell of a female are always different and never be the ...
1
vote
1answer
16 views

GEN file format, SNPs and alleles

I have a few questions I can't seem to get a straight answer to, regarding the .gen file format and also biology in general. The .gen file format specifies SNPs for individuals. Since each SNP has ...
0
votes
2answers
39 views

If bacteria with recombinant DNA molecules do not survive in gene cloning, how they can be grown into a colony after being isolated?

This is as far as my understanding of gene cloning goes. Let's say that the plasimd (vector) in the bacteria contains an ampicillin resistence gene. Through restriction enzymes, the ampicillin ...
8
votes
2answers
1k views

Where did Neanderthals and Denisovan Man come from?

Neanderthals, Denisovans and our species (Homo sapiens) are commonly cited as closely related subspecies, even interbreeding with each other. Yet our species theoretically didn't migrate out of Africa ...
3
votes
1answer
24 views

Can the heart generate its own rhythm independent to the SAN?

My textbook and a revision guide, which I believe is a reinterpretation of the textbook, state that: The SAN initiates waves of excitation that usually override the myogenic action of the cardiac ...
0
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1answer
14 views

Use of bacteriophages against viral infections

I know that bacteriophages kill cell by essentially blowing up, and I also know that viruses are difficult to treat because they aren’t necessarily alive. Could bacteriophages be modified to attack ...
-1
votes
1answer
19 views

What are the brain structures directly on top of the brain stem?

I have been trying to learn the anatomy of the brain, and some information on their functions, through an iPad app called 3D Brain. Whilst going through the different parts, I have noticed that one ...
3
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0answers
17 views

Is this a venomous (poisonous) spider?

Today I found a spider in my home that I have never seen before. I live in Karachi, Pakistan. I want to know which spider is this and if it is venomous and danger for me or my family ?? Is this ...
1
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0answers
22 views

Why some eggs are bile stained?

Why eggs of some helminths( Diphyllobothrium latum, Trichuris trichiura, Ascaris lumbricoides etc) are stained with bile while eggs of other helminths( Hymenolepis nana, Enterobius vermicularis etc.) ...
4
votes
1answer
57 views

Can you identify this insect?

I found this insect in my own courtyard in the city of Pamplona, Navarre, Spain; during mid-February. My courtyard is never directly exposed to sunlight and is always cold, poorly lit and humid. It ...
1
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0answers
5 views

Nerve/muscle fibre depolarizaitonand repolarization balance

if continously sodium is pumped in during depolarization and pottasium is pumped out during repolarization, eventually there will more sodium and less sodium inside. How the does the fibre/cell return ...
3
votes
1answer
30 views

Do you know which is this small flower in Asturias?

Was located in the Turón valley on Mieres, Asturias, Spain (https://goo.gl/maps/BMwyfWtiSdw). Found it at 900 meters of altitude. The plant is just about 8 cm high maybe. All the ones I've found were ...
-3
votes
0answers
11 views

What would happen if carbon dioxide does not escapes a Cell?

CO2 escapes cell through diffusion, but what would happen if it does not escapes from the cell?
1
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0answers
16 views

What bird is this (found on Alice Spring Desert Park on Australia)?

I was reviewing photographs of the animals we found on our trip to Australia during the past September and I cannot find what is the bird in the picture. It was found inside Alice Springs Desert Park, ...
3
votes
1answer
23 views

Can you name this plant that likes shadow on Asturias?

Was located in the Turón valley on Mieres, Asturias, Spain (https://goo.gl/maps/BMwyfWtiSdw). Usually, I find them on shadowy, not too illuminated parts, although I'm not sure if that's important or ...
0
votes
0answers
8 views

Calories burned for each activity - is numbers true?

I always wonder if we burn 90 calories for running a 1 km distance and the same we’ll get by consuming 5 tea spoons of sugar, How is it possible energy from that little amount of matter able to push a ...
1
vote
0answers
19 views

What is the name of the wrinkles occurring in people's lips?

I was wondering if there is a name for the wrinkles occurring in people's lips. Just curious.
-1
votes
0answers
8 views

electrical excitation of a skeletal muscle

Does anyone have any idea why the mechanism of this coupling has been difficult to determine? It is an end of a chapter question in my human physiology textbook.
0
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0answers
14 views

Blast wrong, RNA seq

I am looking for a Virus, which have 3 RNA segments in my NGS data (Cucumber mosaic Virus). I have trimmed adapters to my ngs data and I have convert my fastq files in fasta files which I have done ...
0
votes
0answers
3 views

Sugested literature for herpetology

I'm a mathametician who always have liked biology and especially reptiles. I'm here because I wanted to ask you for advice in to which books should I read to start with herpetology and what should I ...
3
votes
1answer
51 views

Fruit identification - What is this green long fruit?

I found this fruit in the South of France, but I have no Idea what it is. It's a green, hard fruit. I tried to cut it to see the inside (on the following pictures). It fell from a big tree, but I don'...
2
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0answers
16 views

Flying insects on olive tree

They may be responsible for why the leaves are drying out. Location is in West Europe. Their size may be 0.5 cm to 1 cm

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