1
vote
0answers
8 views

What are the application areas of Pattern formation studies specific to biology?

I was reading about reaction-diffusion processes, morphogenesis concept by Alan Turing and works of Murray in describing pattern formation on animals etc. But one question which came to my mind was ...
0
votes
0answers
10 views

What are main animal origin antiseptics?

I started to think which are the main animal origin antiseptics to understand possible negative sides of these antiseptics. What are the antiseptics of animal origin?
3
votes
1answer
35 views

Why dont we develop immunity against common cold?

We all suffer from common cold, and that, frequently. Why have we not developed immunity against it till now? By immunity I mean immunity as a species.
0
votes
0answers
11 views

Vitamins that could help “make us smarter”?

I was at Sprouts health store and saw a lot of vitamins/herbs that claimed to be "Study Aids" etc, so if there is any basis to it, where exactly does it hold truth? And are these supplements safe?
-2
votes
0answers
18 views

Is it possible to resurrect dead animal by using it's DNA?

My pet died yesterday by an accident. I'm feeling so sad, can't even sleep well. I tried to control myself and thought about many philosophical questions, but I can't get away from this sadness. ...
4
votes
1answer
66 views

Would oxygen levels be stable without photosynthesis?

I learned how the CO$_2$ cycle works in several biology classes, high school, elementary school, geology, and physics. Then today there was an article published in the NY Times claiming: ...it is ...
0
votes
0answers
20 views

Why do spiders have a leaf at the bottom of a piece of web?

I've lately seen a lot of instances where a leaf is dangling from a piece of web coming down off a tree. What purpose/s does this serve for the spider? Is it some sort of mechanism for the spider to ...
0
votes
0answers
26 views

Distance matrix with different length sequences

In a project we're doing (in python), we want to create a distance matrix for a phylogenetic tree with multiple, different length sequences. However, what we've seen so far (AlignIO in biopython, ...
3
votes
1answer
685 views

How the conjunctivitis virus spread just by seeing a person's eye who is infected

Conjunctivitis or 'pink eye'. I have a few questions on conjunctivitis. When I was suffering from conjunctivitis, my doctor advised me to wear sunglasses so that no one else gets infected. I ...
3
votes
1answer
26 views

How can I determine the purity of cells isolated from rat brains if I cannot use FACS, Immunohistochemistry or SEM anaysis?

Please help. I know how to isolate the different cells (astrocytes, other glial cells, neurons and synaptosomes) from brain tissue using a Ficoll-based separation but how do I determine the purity of ...
1
vote
1answer
24 views

How is it possible to even hope for an ebola epidemic of this current size to remain contained to a relatively small part of Africa?

As of 9/14/2014 at least 5347 cases of ebola have been identitied. Some estimates are much higher. While experts are sounding the alarm to try to get sufficient resources to contain the outbreak, some ...
1
vote
1answer
24 views

Determining and Differentiating specific ATPases

In respects to this certain ATPase transporter. What do i look for in respects to determining what specific kind it is out of: F-ATPases V-ATPases A-ATPases P-ATPases E-ATPases Im assuming that ...
5
votes
3answers
186 views

Books for beginners

I want to study biology. I have zero previous knowledge of biology but I know Physics, Chemistry and Maths. From which book should I start? I have heard about Campbell Biology, but it is very costly ...
1
vote
1answer
31 views

BLASTn vs ORF tools

Sequencing projects sequence one strand and call that the + strand and then extrapolate the sequence of the - strand. This means that sometimes the genomic sequence that you download from a database ...
0
votes
0answers
14 views

Immunomic Microarray

"One can measure two or more signals simultaneously determined by a single feature, i.e., epitope in immunomic microarray DNA microarrays measure one response value for each gene per sample; that ...
-1
votes
1answer
28 views

peptide MHC microarray

"The recent technology is peptide–MHC microarray or artificial antigen-presenting chip. In this technique, recombinant peptide–MHC complexes and co-stimulatory molecules are immobilized on a ...
1
vote
1answer
25 views

What is the physiological difference between cortisone and cortisol?

There is only hydrogen bond different. Cortisol is synthesized by our body, while cortisone is given to the patient. Why you cannot give cortisol directly to the patient? I think the reason is ...
2
votes
1answer
39 views

Did the Britons 100 years ago have different intestinal flora and fauna?

Note: this is not a question about history, but about human digestive system over time :) I know a lot of colleagues who traveled for business trips to India. All of them caught terrible diarrhea ...
0
votes
0answers
19 views

recombinant peptide MHC complex

What is recombinant peptide-MHC complex??? Recombinant DNA means "to bring together genetic material from multiple sources, creating sequences that would not otherwise be found in biological ...
4
votes
1answer
39 views

Why can't a Corn have 13 rows of seeds?

Every time before eating a corn, I count its lines. I would always find 12 or 14 rows of seeds but never 13. Is there any biological/scientific reason behind this?
0
votes
1answer
21 views

Is there any research on how accurately people can follow a beat?

I'm currently helping develop a rhythm game, and as part of the scoring system, I'd like to make scores and ranks based more on accurate pattern recognition rather than hitting notes very exactly on ...
2
votes
1answer
12 views

What is the Baculovirus and how does it help in research?

I was reading up about Biotechnology and the use of insects, and came across an interesting article about Insect Cell culture Techniques that specifically talked about the usage of the Baculovirus. If ...
0
votes
1answer
20 views

Regarding inherited fertility in animals

If an animal is fertile does it follow that both its parents of the same species (not necessarily the same species of the offspring)? Was it Mayer who said a fertile male and fertile female of two ...
3
votes
2answers
60 views

Transmembrane Protein Problem

Problem A transmembrane protein has 1000 aa. The 5th aa is found on the external side of the cell membrane. It interacts with the aqueous environment outside the cell. Amino acid 90 is inside the ...
6
votes
1answer
57 views

Fisher's Geometric Model for Dummies

Fisher's geometric model is still today one of the most important and fundamental model in evolutionary biology but it seems to me that most student in evolutionary biology don't really understand it ...
1
vote
0answers
18 views

3 end RNA seq library construction

I have tried to make cDNA libraries from FFPE tumor blocks (highly degraded RNA) using the 3' end RNA seq protocol provided by West lab. Here is the link for the same. ...
1
vote
1answer
27 views

Evolutionary support for parenting book “The happiest baby on the block”

The book by Dr Harvey Karp (MD) The Happiest Baby on the Block proposes that the duration of human gestation has evolved as a tradeoff between cranial size and development of the infant. He ...
-1
votes
1answer
35 views

Meiosis I or II [on hold]

Suppose an organism has 8 chromosomes. When the female and male organisms mate, how many chromosomes will the mother contribute to the offspring? Why?
0
votes
0answers
13 views

Definitive list of books across various fields in Biology? [on hold]

There have been a number of popular posts on StackOverflow where a list of popular (useful) books have been compiled on various programming languages or other topics. I wanted to know if there exists ...
0
votes
0answers
24 views

Sexual Reproduction [on hold]

The primary oocyte of a bird which has 80 autosomes and WZ sex chromosomes is going to divide. How many daughter cells and chromosomes are there in each cell at the end of meiosis I and II?
4
votes
1answer
39 views

How fast cancer cells divide, compared to normal cells

This question suggests that we have, on average, 50-70 billion cell divisions per day. I just read that cancer cells divide more often (therefore more prone to radiation). I am wondering, for a ...
6
votes
1answer
59 views

Where do lost membrane proteins go after exocytosis?

Exocytotic vesicles take away membrane proteins and glycocalyx on the cell's plasma membrane surface. When those vesicles are released into the interstitial fluid and wherever else, where do they go? ...
2
votes
1answer
11 views

epitope prediction/ mapping

B-CELL EPITOPE PREDICTION Regarding this article: "Such a molecule can be synthesized or, in case of a protein, its gene can be cloned into an expression vector."----- is a particular line in ...
2
votes
0answers
15 views

Regarding cellular self-destruction

I heard and read telomere 'health' or 'length' ( if that's right ) has alot to do with cell 'health'. If telomere 'abilities' are 'restored' to a 'healthier' status then the cell it is in functions as ...
1
vote
1answer
53 views

Can we influence evolution by teaching primates to control fire? Should we?

Most people with a strong interest in biology will have heard of Kanzi the Bonobo, the ape that has the wherewithal to collect fuel for a campfire and play pac-man. But is it conceivable to influence ...
4
votes
1answer
34 views

Why can't the immune system start at the mating time?

The immune system has a great role in our body. When foreign particles enter our body, the immune system can recognize and start defense mechanisms such as the complement system and others. But when ...
4
votes
2answers
799 views

Do biological facts determine when a human fetus is considered alive and human? [on hold]

I often hear or read this statement: "It's not a human, it's a fetus." In other words, some think a fetus is non-human until a certain point. And another similar statement: "The fetus isn't ...
1
vote
0answers
7 views

How does Temperature influences the rate of protein turnover?

Question How (quantitatively speaking) does temperature influences rate of turnover of transcription factors? Which protein? As I am not looking for any accurate number I am talking about an ...
4
votes
1answer
23 views

Effect of alcohol on parasites

I recently came across an article saying that fruit flies use alcohol to deter parasites. The researcher was quoted as saying there have not been any studies on the effect of human alcohol consumption ...
1
vote
1answer
17 views

aspartame in relation to generating methanol

So I posted another question with respects to methanol and aspartame in metabolism with respects to toxicity. So another question I have is "Why is aspartame used as a dietary component to generate ...
2
votes
0answers
11 views

Metabolism that generates methanol

I've been looking for help topics about methanol in metabolism. Specifically I wish to know What is a common dietary component that generates methanol following metabolism and comment on its ...
1
vote
0answers
15 views

Question about mutation of multiple nuclei?

If an organism with multiple nuclei, such as the slime mold Physarum polycephalum, was to be exposed to a mutagen, such as 5-bromouracil, what would be the effect (besides death)? Especially if ...
9
votes
1answer
610 views

Why doesn't the cell membrane just… break apart?

Forgive me if this is a silly question. I can't understand the basics. Why doesn't the membrane just... break apart? What's keeping the layers in the phopholipid bilayer together? I know that the ...
1
vote
0answers
8 views

How to automate this custom gene expression microarray chip?

I have 16 gene sequences that I am interested in their detection in clinical samples. I already measured their RNA levels by using RT-qPCR technique and their benefit has already been proven to help ...
0
votes
0answers
19 views

What is Prana?Does flora contain prana? [on hold]

What is Prana?Does flora contain prana? Is this a cosmic energy that is set in earth, nature? Do organisms contain that energy?
1
vote
0answers
28 views

An unknown band appearing in my gel electrophoresis

I am having trouble understanding what is the source of band "2" in the following gel-electrophoresis: In this experiment, we took an E.coli transformant colony and ran its nucleic acids in the ...
1
vote
0answers
11 views

fermentation to acetic acid

How many time need for swich fermentation to acetic acid production cycle , and the conversion of apple vinegar in a sealed container incubated at 37 ° C ? Should be in the fully closed? What is ...
1
vote
1answer
13 views

PDB file SEQRES have different datas?

In PDB file, SEQRES represent the aminoacids but some pdb file present the "GLC" and some other. for example ...
3
votes
1answer
19 views

What is the most critical step of plasmid purification?

During the process of plasmid purification and quantification, which step is the most critical to the success of the process?
2
votes
1answer
19 views

How do I prepare a solution? (Calculation) [on hold]

I have to make 100mL of 400mM NaOH. How do I go about calculating what I need to prepare this?

15 30 50 per page