4
votes
1answer
94 views

Do blind people learn Braille equally fast as the sighted? [closed]

The visually deprived brain undergoes extensive remodeling due to cross-modal plasticity. This leads to increased areas of the cortex being available for other purposes such as tactile processing. Now ...
0
votes
0answers
7 views

Dawn simulation - does color change affect waking up?

just curious. Are there any works or research results related to the influence of light color used for dawn simulation? I mean those wake-up lights which try to simulate dawn to make waking up better ...
0
votes
0answers
24 views

Fab : Molecular mechanism of fragment antigen binding

I would like to know about the molecular mechanism for FAB synthesis. I was able to refer some of the papers, but they discuss only the lab preparation of FAB. Where can I get the molecular procedure ...
-2
votes
1answer
37 views

Why the name coined for MARKUP LANGUAGE for SBML? [closed]

I'm get the confusion about SYSTEM BIOLOGY filed. SBML is refer to as SYSTEM BIOLOGY MARKUP LANGUAGE why we should called as ...
5
votes
2answers
106 views

Synthesis of immunoglobulin Fab fragments: Where can I learn about Fab?

I wanted to know the chemical reaction involved in Fab synthesis. I looked everywhere for it. No luck. I know I will find it here. All I know for now is: Fab is a monovalent fragment that is ...
4
votes
1answer
20 views

Phospholipid movement in cell membranes

What causes phospholipids to flow so quickly in cell membranes? In Biology by Cambell et al. they state that a phospholipids can travel up to 2 micrometers per second. Is that a random movement or has ...
0
votes
0answers
15 views

About cancer cells and phagocytes

Can some type of phagocyte attack a cancer tumor or attack a virus that induces a cancerous growth? Are there specific phagocytes for different viruses?
2
votes
0answers
32 views

How often does bacterial transformation happen?

I have been reading: M. Dröge, A. Pühler, W. Selbitschka, "Horizontal gene transfer among bacteria in terrestrial and aquatic habitats as assessed by microcosm and field studies", Biol. Fertil. ...
3
votes
0answers
29 views

How many eukaryotes are there on Earth?

I have been reading: William B. Whitman, David C. Coleman, and William J. Wiebe, "Prokaryotes: The unseen majority", Proc. Natl. Acad. Sci. USA 95, pp. 6578–6583, June 1998. [Full Text] [PDF] ...
6
votes
2answers
179 views

Why does sex last so long?

I wonder why (especially human) sex lasts longer than just a few seconds? My thought is that the shorter it takes a man to ejaculate, the lesser is the risk that he gets interrupted by a rival or a ...
1
vote
0answers
15 views

Effect of flask position in shaking incubator affects growth kinetics

During some cultivation experiments for my bachelor thesis I noticed that in liquid culture my bacteria (E. coli) grew differently, according to the position in the shaking incubator. Because the ...
3
votes
0answers
28 views

Biological age of grafted plants

Suppose you graft a piece of an existing 'old' plant. Will it continue to grow having the same biological age as its parent? I.e., would it die at the same time as its parent? Or would the process of ...
6
votes
0answers
68 views

effect of pupil responses on the electroretinogram

The electroretinogram is generally considered to reflect the retinal processing of a light stimulus, typically a photoreceptor response followed by secondary neuronal activity. However, I am wondering ...
0
votes
0answers
40 views

What factors affect the likelihood of auditory stimuli causing arousal during sleep?

I've noticed that the sound of water drops makes me wake up from sleep but other more strong sounds don't make me wake up. I can't find anything about this. The only reason I can think of is maybe ...
3
votes
1answer
28 views

Does our nose detect only if there is change in odor?

I mean, if I enter a room with certain odor, I can sense the odor. However, if I stay there for sometime I cannot sense it anymore. A new entrant to the room can still smell it or I have to leave the ...
3
votes
0answers
11 views

How does anadromous fish physiology “know” to switch from salt to freshwater and back?

What mechanism allows anadromous fish to switch from salt to fresh water and back? How does the fish "know" to switch its physiology and do other fish possess the biochemical machinery for this? How ...
2
votes
1answer
31 views

What is the most recent well-attested common ancestor of chimpanzees and humans?

Humans and chimpanzees are related and thus have a most recent common ancestor. Of course pinning down this precise point is essentially impossible, so I'm interested in close ancestors of this most ...
0
votes
0answers
43 views

Mathematical relationship between fetus weight versus time

I am wondering whether bio-scientists have succeeded in deriving/formulating some good mathematical-relationship between human fetus (healthy) weight and its age? I am looking for some good ...
-1
votes
0answers
18 views

Paper on non-viral vectors for CF gene therapy

I am now planning to write a paper now specficially on liposomes vectors for Cystic fibrosis. I am planning to use papers that talked about early trials in animals with liposomes and early clinical ...
0
votes
0answers
16 views

Physiological function of CFTR gene product? [duplicate]

I just need a clarification. If I am to talk about the physiological function of the CFTR gene product? Then what should I do research and talk about? The only physiological function that I can ...
3
votes
0answers
36 views

How many pandas should exist?

I have a degree in Biology so I'm a little embarassed that I never learned this, but... How do we know 1600 Pandas isn't enough? I know that we have historical numbers (although I couldn't find ...
5
votes
0answers
36 views

How to define “Quasifixation” in continuous approximation of finite population?

Background Many models including the famous very first models derived by Sir Ronald Fisher in his early career, assume infinite population size. In an infinite population, an allele can rise in ...
0
votes
0answers
27 views

Finding appropriate research papers?

I had previously asked some question on cystic fibrosis and I had mentioned that I am a senior in high school writing a paper on gene therapy and CF. I would like to some specific paper on viral ...
0
votes
0answers
7 views

Any databases with AAMI ECG and ECHO?

There is no AAMI 12-lead ECG databases available online. All of them have problems. I and my friends finally finalised our tests with St Petersburg. It is not AAMI. So the next step is to search ...
1
vote
1answer
47 views

What is the difference between embryology and developmental biology?

The question is quite explanatory in it self, I used to think that both are same but then find somewhere that embryology is a part of developmental biology, can somebody please elucidate?
0
votes
0answers
27 views

Contaminant in DNA solution extracted from eggshell membrane

I have been extracting DNA from very old and degraded hatched eggshells inner and outer membrane. I tried some different protocols (ie Promega kit and chlorophorm extraction + ethanol precipitation). ...
9
votes
2answers
438 views

When writing about past research should I use the species name they employed or the modern version?

I am currently writing a literature review in which I am talking about the old research on the subject. When this research was carried out the species I'm talking about were classed under a different ...
4
votes
2answers
45 views

How can histidine be classified both as positively charged and hydrophobic?

I saw the chart in this post Histidine aromaticity. Since I'm not allowed to comment and post a question instead of an answer, I have to ask my question in a separate thread. How can histidine be ...
-2
votes
1answer
22 views

Cells “grown in LB broth to an OD600nm” [closed]

Cells "grown in LB broth to an OD600nm" What does the OD stand for in this?
0
votes
1answer
14 views

Ways to measure effectiveness of a gene therapy trial?

I understand that Fluorescence in situ hybridisation can be used to measure the effectiveness of a gene therapy experiment/trial. But what are some other genetics techniques to measure the ...
-1
votes
1answer
49 views

Which (naturally selected) evolutionary process led to the development of egg-laying?

I understand that eggs were around before chickens, and therefore this age-old question isn't properly framed. But the idea still stands, there was a first egg-laying organism which modern chickens ...
0
votes
1answer
48 views

What impacts penetrance of Huntington's disease?

From Principles of Life by H. Craig Heller, David E. Sadava, Mary V. Price: From what I understand, Huntington's disease exhibits varying degrees of penetrance depending on how many times the ...
0
votes
2answers
26 views

Is this a valid definition of independent assortment?

"Allelic combinations separate randomly. I.e. a parent might be Aa and Bb for two traits but that doesn't necessarily mean the gametes will strictly be AB or ab but any of a number of combinations. ...
0
votes
1answer
44 views

What is the progressive evolutionary advantage that leads to flying?

As far as I understand, all life started as non-flying and flying came about by natural selection. What is the evolutionary advantageous "path" to flying? Or is there something else to explain this?
0
votes
2answers
63 views

What are non-heritable changes to genomes?

I am told that mutations are heritable changes to the genome. So this begs the question - what are non-heritable changes to genome?
2
votes
1answer
40 views

What is the difference between a phosphotransferase, a phosphatase, a phosphorylase and a kinase?

I've looked in several sources, but I'm still confused. This is what I have so far: A phosphotransferase catalyzes the addition of a phosphate group. A kinase is a type of phosphotransferase that ...
1
vote
0answers
15 views

Gene Therapy for Cystic Fibrosis Extension

Thank you everyone for answering my previous two questions on CF. I have decided to write a paper specifically on the use of viral vectors and gene therapy for cystic fibrosis. I was told by my ...
3
votes
1answer
46 views

Why is Cysteine and Tyrosine used to calculate a sequence isoelectric point?

Why are the amino acids - cysteine and tyrosine used in isoelectric point calculations for a protein sequence, yet neither of them are positively charged molecules? and are not used in net charge ...
0
votes
1answer
41 views

What are the structual differences between DNA and RNA? [closed]

How is the structure of DNA different from that of RNA?
3
votes
0answers
45 views

Does eating antacid (such as Magnesia) before meal have any impact on digestion?

During an anatomy lecture I heard of the importance of the acidity of gastric acid (e.g., killing microorganisms, dissolving food, being a factor for triggering further processes). If a healthy person ...
1
vote
0answers
12 views

what is the role of ctab in plant dna extraction [duplicate]

i get good results for dna extraction by using ctab method but i doesn't have that proper information for role/function of ctab and other chemical. Anyone know, please briefly explain ......
0
votes
1answer
25 views

Could transfusion of a different blood type cure blood-based cancers?

Different antigen detection triggers an immune system response that could perhaps stimulate mitochondria and such in killing cancer cells - something like chemo without the hair-loss?
14
votes
1answer
566 views

Why is the Krebs cycle considered a part of aerobic metabolism if molecular oxygen is not involved in any of the reactions in the cycle

Why is the Krebs cycle considered a part of aerobic metabolism if molecular oxygen is not involved in any of the reactions in the cycle? I originally thought that Krebs cycle was aerobic metabolism ...
0
votes
1answer
37 views

Does too much Genetical Modification leads to formation of new species?

I think Genetical Modification can be termed as 'Artificial Mutation'. Is it possible that genes can be modified so much that it leads to the introduction of new Species i.e Can integration of large ...
0
votes
0answers
27 views

Are Humans Evolving? [duplicate]

Due to migration & absence of reproductive isolation,has human evolution stopped? As evolution occurs when there is absence of mating between two population,growing trends of interracial ...
5
votes
1answer
108 views

What is the H+ gradient in mitochondria?

I would like to understand what the term H+ Gradient means. I googled this question and found terms such as chemiosmosis and ion gradient being tossed around. I am very new to biology and I do not ...
0
votes
0answers
31 views

Gene Therapy for Cystic Fibrosis

I have another question regarding cystic fibrosis. I understand that gene therapy is currently being talked about in the cure for cystic fibrosis. I know that Eric Alton at imperial college London is ...
5
votes
2answers
82 views

Functions of the CFTR gene?

I am a senior in high school and I am studying cystic fibrosis. I don't quite get the function of the CFTR gene as this is my first time dealing with this type of heavy scientific info. I had ...
0
votes
0answers
17 views

What accounts for diversity in species? [duplicate]

Why are there so many similar life units? (creatures, plants, etc.) Or, in other words, why is there great diversity among life units yet great similarity between similar groupings of life units? Why ...
1
vote
0answers
25 views

C. elegans and nutrition

If there is ample amount of food, do C. elegans worms know when to stop eating or do they store extra energy? Could they put this extra energy to use by moving faster or putting more eggs?

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