7
votes
2answers
95 views

How do neurons find each other?

Neurons form complicated networks in brains, but their connections can't be random (at least not entirely). Brains function similarly among all members of individual species, and that functionality is ...
1
vote
1answer
105 views

Missing 4 $\ce{H_2O}$ (per glucose) in Cellular Respiration… Where can they be?

I having trouble understanding the equation of the cellular respiration. The thing that bothers me is the number of $\ce{H_2O}$ molecules. Generally, cellular respiration is written thus : $\ce{C_6H_{...
1
vote
0answers
7 views

How does having an empty stomach affect absorption of compounds?

From personal experience, compounds such as nicotine, caffeine and alchohol appear to absorb much quicker into the blood on an 'empty' stomach', or after extended periods of fasting. If this is the ...
3
votes
0answers
35 views

Is this some sort of fungus?

There is something strange growing straight out of the glass windows at work. They look like hairs, about half an inch long, and each have a white spot on the tip of them, slightly weighing them down. ...
1
vote
0answers
21 views

Do users of CRISPR/Cas iterate or parallelize to try multiple guide sequences?

I've read about on-target efficiency and off-target effects in use of CRISPR/Cas9, and about tools that suggest good guide sequences. I am wondering: how many guide sequences do typical CRISPR users ...
1
vote
1answer
121 views

How much do crocodiles eat?

How much do crocodiles eat? The closest I found to an answer was on German wikipedia, where it says that adult nile crocodiles eat "only about 50 full meals a year." While interesting, without knowing ...
-1
votes
0answers
22 views

What are the differences between good (pathogens) and bad (beneficial) bacteria? [on hold]

What are the main differences between pathogens and beneficial bacteria? Is it the only difference that one create a poisonous waste material and other not, or there is something else?
3
votes
1answer
601 views

Storing Taqman plates with polymerase in fridge before running

I'm going to be running some Taqman assays on cDNA generated from RNA collected from various samples, and will end up running a bunch of plates (right now the setup is 1/2 a plate per sample, ...
-1
votes
0answers
13 views

Why can Neural Stem Cells be attracted to specific sites in the brain?

Neural Stem Cells (NSCs) have recently attracted attention as an innovative way of the cell therapy. NSCs have a highly migratory capacity and are attracted to the site of a brain pathology. Because ...
0
votes
0answers
4 views

Switching of life cycle Lambda phage

Hello everyone iam very curious to know how the lambda phage switch their life cycle (lysogenic and lytic cycle). I want to know the detailed mechanism by which this switching occurs in the phage.
0
votes
0answers
12 views

Loss of HBV Immunity

I had a full course (three doses) of Engerix-B in 2011 and 2012, but recent blood tests show my anti-HBV antibody titre is very low, so I just had a booster dose. This isn't the first time something ...
0
votes
0answers
18 views

Function of the centriole

My bio text book says Centriole is like the Nucleus of Centrosome What does this mean ? I'm a bit confused.
1
vote
0answers
9 views

Haploview command line: how to get tagSNP

I am trying to use Haploview command line software to compute haplotypes and extract tagSNP for those. When I use the standalone version on my local computer I tick the 'Show tags in blocks' option so ...
0
votes
1answer
60 views

What did young pre-mammals eat before milk evolved? [on hold]

Mammals tend to be born helpless and teeth-less (and in some cases, blind). So for the first periods of their lifetime, they drink milk. Before this milk-producing property was evolved, what did the ...
0
votes
1answer
26 views

Mitochodria's Role For Neuron Regrowth

Recently an interesting study has reported. Zhou et al., 2016. J. Cell Biol. http://dx.doi.org/10...3/jcb.201605101 According to this study, enhancing anterograde axon transport of mitochondria is ...
0
votes
0answers
24 views

generating grid around the protein

I am trying to generate a grid around my protein. Can you please help me with thatn ? I read your post saying it is possible to do that using PyRosetta. Can you please help me with that , how to do it ...
3
votes
1answer
50 views

Why do people sing?

I was wondering the why people sing, but from a biological point of view. Is it necessary for our body? If it is so, then why can't everyone sing well? Is it in direct relation with neurotransmitter ...
0
votes
1answer
33 views

What is the best way to analyze non-quantitative mass spec hits from an immunoprecipitation pull down?

I am studying a nuclear protein and want to come up with a list of potential proteins that it interacts with. From the nuclear fraction of 293T cells, I did an IP (immunoprecipitation) to pull down my ...
1
vote
1answer
31 views

What is the reason for 'microcytic' anaemia?

I know the causes for microcytic anaemia are Fe deficiency, prolonged inflammation, Thalessemia, Sideroblastic etc. All these logically point to a decrease in Haemoglobin synthesis - either Haeme or ...
4
votes
1answer
23 views

Why does the cloned cat, CC, exhibit mosaic fur color?

Since fur color in this cat is from a sex-dependent gene, I see how calico cats occur. However, I don't fully understand why it happens in cloned cats. When the cat is cloned, the DNA is taken from a ...
3
votes
1answer
23 views

How specific are CRISPR-cas9 cuts?

CRISPR-cas9 uses a string of RNA that matches with DNA and makes a double stranded cut at that point. If the RNA is just a few letters in length, the enzyme would cut DNA in many places. It would be ...
3
votes
1answer
52 views

How are some people able to continue growing after reaching maturity?

This is technically a cross-post of a question posted last year concerning gigantism and how certain people are able to grow far past expectations after it's assumed they've reached maturity. How are ...
1
vote
2answers
78 views

Correlation of non-coding DNA with coding DNA

I sequenced the first exon of the MC1R gene of 15 labradors (genomic DNA) to look for the loss-of-function mutation (C.916C>T) and as expected, it was where it should have been (916th base pair). As i ...
3
votes
0answers
30 views

Venom Denaturing with Heat

My friend got stung by a stingray yesterday and the lifeguard quickly stuck her foot into hot water (she said the water burned slightly on contact) and remarkably, she was walking without pain in a ...
1
vote
0answers
17 views

How do the chemical components of these spices prevent fungal growth?

I am doing an EE on how spices affect fungal growth for the following spices - oregano, garlic, cinnamon, cumin and turmeric. Its been hard to find any sites that say why or how they affect fungal ...
0
votes
0answers
15 views

What's the best way of generating high yields of mitochondrial DNA

I want to extract mitochondrial DNA from a fungus, but there are two ways to cultivate the fungus, one is to cultivate it on an agar medium (covering a piece of cellophane paper to stop hyphae to grow ...
1
vote
2answers
42 views

Spatial dimensions for an animal

I'm reading a review paper. They say: The position of an object in head-centered coordinates (that is, relative to an animal's head) can be defined along three axes: the medio-lateral (radial) ...
0
votes
0answers
45 views

Why can't we use computer mouse to draw or paint? [closed]

I have seen a lot of artists use a graphics tablets while drawing/painting on a computer. I tried drawing on a computer using a mouse, and its worse than what I can draw on paper with a pencil (I'm ...
0
votes
1answer
399 views

0.1 M sodium citrate in 10% ethanol and DNA solubility

I understand how DNA precipitation works in the presence of salt (such as 0.3 M sodium acetate or 0.2 M sodium chloride) and alcohol (30 ~ 50 % isopropanol or 60 ~ 75% ethanol) However, in the Trizol ...
1
vote
1answer
37 views

Why does dehydration lead to low blood pressure

I understand that the two leading causes of death from dehydration is imbalance in electrolytes and loss of blood pressure. I'm trying to understand what role water is playing in these cases and how ...
1
vote
0answers
17 views

Can 3% hydrogen peroxide be used as effective disinfectant and antiseptic?

I was curious to see whether 3% hydrogen peroxide can be used as antimicrobial and virucidal product for daily use in home. There are several disinfecting products in the market claim that use of ...
3
votes
1answer
44 views

Difference between pipette and pipettor

I've been translating a text listing some analytical laboratory equipment, and found that some fellow translators translate the Russian word "автоматическая пипетка" (avtomaticheskaya pipetka, which ...
0
votes
1answer
29 views

How to define a 'trait' objectively?

I'm coming across an increasing number of papers that use trait-based approaches for risk assessment, like this one . This paper defines a trait as follows: Traits are the physiological, ...
5
votes
1answer
58 views

What wasp like insect breeds in clay pots with dead spiders?

I found several small clay pots of oval/cigar shape roughly 2cm long in a rarely used window in the house, because a wasp like insect was flying into a small cavity of the window. I removed one and ...
0
votes
0answers
5 views

Genetic diversity of Archae attributable to viral transduction?

I recognize that bacteriophages have the ability to accidentally trap host Bacteria DNA upon assembly. This allows the transduction of one bacterium's DNA into other bacteria when the virus ...
-2
votes
2answers
31 views

If we add only 1 primer in PCR [on hold]

What would happen if we add only one primer, say forward primer, to PCR? (Image Credits: Wikipedia) As it is clear from the image that we need both forward and reverse primers to get it working (...
-2
votes
1answer
38 views

Essential amino acids

Humans and the majority of animal species cannot synthesize essential amino acids (Info: Campbell biology 9th edition). However, meat, eggs, et cetera provide all required essential amino acids. And ...
0
votes
0answers
17 views

Can human be emotionless?

Is it possible that a person can't produce, like, dopamine, serotonin, and other emotion hormones? Or, a part of the brain can't function to make one feel something?
0
votes
0answers
8 views

Can a dog that has had all his shots for parvo, still contract it? [migrated]

I have a 1.5 year old Boston terrier who when he was a puppy got all his shots, including 3 for parvo. My roommate recently got a puppy. 10 weeks old? it was sick and when the vet checked he was ...
1
vote
1answer
22 views

Which magnoliophyta groups are NOT pollinated by bees and why? [on hold]

Considering the bees as the family Apidae which families of flowering plants are definitely not pollinated by them and what could be the reasons? -Could you say that the relationship is preserved at ...
4
votes
0answers
32 views

Can anyone tell what kind of berry/currant this is?

I found this currant-like plant in Helsinki, Finland. It seems very similar to red currant but it has hairs on its fruits, and the fruits are pear-shaped. Can anyone please identify this plant? Many ...
0
votes
0answers
51 views

The mechanism of cancer metastasis

Generally, EMT, Epithelial to Mesenchymal Transition is thought to be involved in the mechanism in which cancer cells metastasize in the early stage. EMT is an process in which epithelial cells ...
2
votes
1answer
35 views

“Other” classification for epitopes in the Immune Epitope Database (IEDB)

I used the immune epitope database (IEDB) to search for epitopes. I found some epitopes derived from antigens called " other" by IEDB. When I asked about it, the answer was "We use the "other" ...
0
votes
1answer
28 views

Why our bees might have suddenly disappeared

We have a large garden in Bedfordshire, UK, next to woods and to arable fields currently planted with intensively farmed rape. We usually have many bees in the garden. Earlier this year, things were ...
4
votes
0answers
63 views
1
vote
1answer
59 views

What are Some Classical Examples of Local Adaptation?

Question Can you please give a list of classical (textbook) examples of local adaptations? How to answer Examples don't necessarily need to include what evidence supports this specific example of ...
-5
votes
0answers
34 views

why DNA is not harmful to us even if it is acidic? [on hold]

why DNA is not harmful to us even if it is acidic? please answer the above question.
0
votes
1answer
38 views

Plant cell question in age 12 science test Part II

I'm a parent and I think the teacher had been a bit harsh with marking most of these questions but can someone help me answer the very last question on the paper please (where someone has written SP ...
3
votes
1answer
35 views

Crossing over : Holliday model

In this figure out of the two heteroduplexes formed one is considered to be non-recombinant product(left) and the other recombinant product(right). My question is despite the exchange of middle DNA ...
0
votes
2answers
27 views

What are “+” and “Ar” in consensus binding sequence of amino acids?

So I was reading this paper and found a figure as below: I understand that [LEAM] means any of LEAM residues, pS is phosphoserine and X means any amino acid residue. What is [+] here ? Is both R and ...

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