1
vote
2answers
10 views

Do both Carbamazepinum and Lamotriginum increase glutamate threshold?

I have in my notes that Carbamazepinum increases threshold for glutamate Lamotriginum delays release of glutamic acid I would like simplify these sentences to one. I am not sure if it is wrong ...
1
vote
1answer
16 views

Does homeopath or herbal treatment to cancer have any scientific recognizition? do they work for which they are made ? If so then how?

Even being a part of very high tech society it's really a matter of concern that we still couldn't completely fight cancer. Though radiation and chemotherapy are one the best methods found till now ...
0
votes
0answers
14 views

Why Pan_troglodytes-2.1.3 Assembly renamed as a Pre in ENSEMBL?

I began working with panTro3 assembly of the UCSC. This assembly corresponds to CGSC Build 2.1.3. See here: https://genome.ucsc.edu/FAQ/FAQreleases.html Now, I have to cross annotations with ENSEMBL ...
13
votes
2answers
1k views

Why does an electrical shock freeze up muscles?

Why is it when someone comes into contact with an electrical supply that their body freezes up and is unable to move away from the electrical source? Can someone explain this through a physiological ...
1
vote
0answers
8 views

Why do we do nested PCR?

Wikipedia: Nested polymerase chain reaction (Nested PCR) is a modification of polymerase chain reaction intended to reduce non-specific binding in products due to the amplification of ...
0
votes
1answer
15 views

How does visual sexual arousal work between the eyes, brain, and genitals/gonads?

When many people look at sexual images, they often can become sexually aroused, including full genital arousal, and feel urges, known more often used as "horny" as slang/urban usage. How does this ...
-3
votes
0answers
15 views

What are the rules for primer design

I am looking for a (most complete, not to say ultimate) set of rules that one should follow to achieve the best performing PCR primers (aside from being compatible to the desired target sequence). ...
1
vote
1answer
9 views

Plasmid: Empty Backbone?

When searching for a plasmid on Addgene what does it mean if it is said to be an "empty backbone"? Why would one want an empty backbone?
0
votes
0answers
11 views

T7 Tagging Next to Met

Will a T7 tag still work if it is placed next to a start codon? Meaning, will it still work with a Met attached to it in the amino acid sequence? Thank you!
0
votes
1answer
12 views

T7 Tagging in Synthetic Biology

What is a T7 tag and can if be used to purify synthesized proteins? Is it charge based like a His tag?
0
votes
1answer
17 views

Skin color explanation?

I do not understand how skin color in humans work, even after taking a basic genetics course and reading some on wikipedia. From what I understand, skin is color based on multiple genes that control ...
2
votes
1answer
19 views

How the pattern of fertilization path is determined before the cell division to form the blastocyst? Is it individually specific?

After sperm meets ovum,the inactive nucleus starts following a particular path inside the zygote rather chase a path.This path is biologically known as fertilization path (as mentioned in an article ...
2
votes
2answers
27 views

Recessiveness of allele for protection of organism

Heterozygous organisms profit from pairs of gene alleles. Harmful alleles when being recessive can be carried without any harm for the organism. Only when two harmful recessive alleles form a gene the ...
2
votes
2answers
41 views

What are multicell spheroids?

I'm from a maths background and I'm doing some research on mathematical models of cancer. I've come across alot of literature mentioning "multicell spheroids" in the context of avascular tumours. I ...
-4
votes
0answers
19 views

anyou graft a geranium to a potato [on hold]

just joined the Chicago journals.botanical gazette.university of chicago, website www.jstor.org I asked them about the latest grafting going on pelargoniums grafting putting three different colours ...
3
votes
0answers
29 views

How to seek for available genetic data relevant to ecology and evolution?

I had a quick look online. There seems to exist many different website of database archiving. Some data might be free of charge while some others might not be. I found things such as Dryad, TreeBase, ...
6
votes
1answer
32 views

Recent classification for parasitoid (ecological relationships)

I'm about to present an exam about ecological interactions in biological control. Although the position of some groups is clear, in the case of parasitoids they are included sometimes as predators, ...
11
votes
1answer
229 views

Is the human biological clock genetically programmed or learnt?

Argument favouring learning: A newborn sleeps for 20-22 hours. But overtime (s)he learns to focus sleeping time to night time, according to his or her needs and family needs. Some sleep from 1 am to 7 ...
2
votes
1answer
13 views

Do I have to use sucrose to induce a lac promoter?

I'd like to optimize the expression of a Fab fragment in Escherichia coli. For induction of the lac promoter on the pAK400 vector I use IPTG and sucrose. Do I optimize the expression in case I would ...
10
votes
2answers
389 views

How sterile is sterile when working with nucleic acids to prevent contamination?

I am reading up on preparatory work on working with nucleic acids and a lot of the instructions speak on excessive procedures on cleaning environments with high %ethanol and making sure the equipment ...
5
votes
1answer
211 views

Why cannot there be multiple sources for same species origins?

We often associate Africa as the geographical location of the origin of humans. Why cannot there exist multiple geographic locations of origin (given same environmental conditions)? The same ...
0
votes
1answer
20 views

Factors on which one compound transforming to another compound depend

Considering the Metabolic Pathway: http://www.genome.jp/kegg-bin/show_module?M00166 Consider the reaction R01523(the very first reaction). How is it possible to know that the compound ...
4
votes
1answer
47 views

Does suffocation pain involve nociceptors?

I never suffocated myself so not entirely sure, but when you suffocate, it's painful, right? But of course different kind of pain than being injured or sick. What I'm wondering is, if the "painful" ...
3
votes
0answers
20 views

How to tackle Winfree's “The Geometry of Biological Time”

I am trying to read through "The Geometry of Biological Time" and I am having a hard time understanding the geometric concepts provided in the book under context of biology. Can someone who has went ...
1
vote
1answer
12 views

18S rRNA sequence

I have this phenomenon that the human 18S rRNA reverse transcribed with polydT oligos serve as faithful RTPCR normalizers, tested with better known house keepers. I want to know what I'm amplifying ...
9
votes
1answer
109 views

Can people with paralyzed eye muscles see?

As far as I am aware, the saccades of the eye are central to visual perception. If the eye is held still, the human stops seeing, even if light is reaching the retina and the visual pathway is intact. ...
7
votes
1answer
96 views

Is Batesian mimicry more important for females?

Myrmarachne plataleoides is a jumping spider that mimics the Kerengga or weaver ant (Oecophylla smaragdina) in both morphology and behaviour. However, the two sexes appear different: Myrmarachne ...
1
vote
1answer
22 views

Can sugar be absorbed orally within seconds? [duplicate]

Whenever I feel a little light headed or tired, it helps to eat something sweet. Specifically, simply chewing or sucking on a sweet seems to aleviate the symptoms within a matter of seconds and then ...
2
votes
1answer
71 views

What would be required to evolve an animal (non-human) brain to obtain human-level cognition?

Could any animal subject to the right conditions evolve human-level intelligence? Suppose that an artificial intelligence (AI) decided to artificially evolve a population of octopus (don't ask why, ...
2
votes
3answers
136 views

Where does the term “cos site” come from?

The word cosmid is derived from cos sites of lambda phages. Why are cos sites called cos sites? What does this "cos" refer to?
-1
votes
0answers
18 views

Are there examples of abnormal human chromosomes that can cause diseases? [on hold]

I was looking into chromosomes and I found the chromosomal abnormalities. I have a limited understanding but I was wondering if someone could clarify it? I was also wondering what numerical, genetic, ...
3
votes
2answers
65 views

What are the “minimum requirements” for a single cell?

I saw a description of the "minimum requirements" for a cell at http://creation.com/origin-of-life in the section called "What are the minimum requirements for a cell to live?" and I'm wondering if ...
0
votes
1answer
15 views

Is missing Q wave characteristic for Wolff-Parkinson-White Syndrome?

No my study books says about that no Q waves in WPW syndrome. They are about wide QRS complex often however. I heard today that the characteristic property of WPW is often a missing Q wave, like here ...
3
votes
1answer
50 views

Why is it important to study chromatin to understand cancer?

Many labs and many projects in biology institutes and university departments have been starting to study chromatin. Chromatin states, chromatin interactions, chromatin loopings, chromatin behaviours, ...
2
votes
1answer
37 views

Evolution and Phenotypes.

This may be better suited for the English language SE, but When discussing evolutionary changes in species is it proper to refer to their phenotypes? In this context: "Imagine if a cow did not ...
-6
votes
1answer
77 views

What is the biological process shown in this textbook cover? [on hold]

So I've been with this question to a number of forums and I can't seem to get any head start with it. I have this textbook called "The World of The Cell" 7th ed. On its cover is a picture that is ...
8
votes
3answers
849 views

Are blood vessels organs?

Are blood vessels classified as organs? Organs compose of 2 or more tissues and perform a certain function. Blood vessels have 3 different tissues and perform a function (transport blood), yet I do ...
2
votes
1answer
18 views

Why does the inhibition of translation initiation cause the accumulation of 80S ribosomal monosomes?

As I have read in (1), inhibition of translation initiation will increase the number of 80S ribosomes while decreasing the fraction of polysomes due to the polysome-runoff. The net effect is to ...
1
vote
1answer
34 views

What is the connection between exercise and muscle growth

From a physiological perspective, all that is done during exercise is the expending of energy in the form of ATP to fuel muscle contraction and extension. When I looked up why muscle grow due to ...
-8
votes
0answers
36 views

Why do we have buttocks at the back and not in the front? [on hold]

We have buttocks at the back and not in the front. Why? edit: I mean, why is gluteus maximus bigger than inner hip flexor?
5
votes
1answer
24 views

Can a woman possessing 1 mutated allele show attenuated color-vision deficiency?

Women possess two X chromosomes. However, during development, when the embryo has about 32 - 64 cells, one of these chromosomes is randomly inactivated (in each cell) by a lncRNA named Xist. As a ...
6
votes
3answers
353 views

Does a neuron ever generate an action potential without stimuli?

Most accounts I read involving action potentials and synapses and the like tend to focus mostly on the action potential as a mere automatic reaction to another similar event happening upstream. From ...
10
votes
1answer
626 views

Have there been studies done to test Immortality of cancer cells in culture?

This website on cultured cancer cells () says cancer cells may be immortal. I am wondering if there has been any research done to find if cancer cells are really immortal. How old is the still ...
3
votes
1answer
79 views

Oscillatory electrical system using a chain of neurons

Many daily activities that we perform are result of inbuilt oscillatory circuits in our body. For example walking, breathing, heart beat, blinking, etc. The coding and decoding of stored memory also ...
3
votes
1answer
54 views

How do bumblebees and hornets avoid the negative effects of inbreeding?

I just learned that all hornets and bumblebees except for the queen die at the end of the year and the queen starts a new nest in spring. But that means the next generation of queens have only ...
-1
votes
0answers
11 views
3
votes
0answers
38 views

When and How do pacemaker cells develop during the cell aggregation process of Dictyostelium discoideum?

I was reading a paper by Tang & Othmer about oscillations and waves in Dictyostelium discoideum. Under certain condition like starvation period in the life cycle of a Dictyostelium discoideum ...
3
votes
0answers
35 views
+50

Degree of dosage compensation in Drosophila melanogaster

In this paper the authors state that the dosage compensation seen in Drosophila is approximately twofold, but they do not provide any source or numbers (as far as I can see) for this. What is the mean ...
1
vote
0answers
42 views

Why my right eye see warmer colors? [on hold]

As the title says, my right eye see warmer color than the left one. I've seen a few people talking about that thanks to google, but I was unable to find a proper answer. So, what cause this strange ...
2
votes
6answers
127 views

Which information can be obtained from a list of gene names?

Lets say I only have a list of gene names. I know they are up regulated and I know they are related to cancer. What information can I obtain from having only the names of genes? For example is there ...

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