0
votes
0answers
7 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
6 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
1answer
4 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
6 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?
-1
votes
2answers
16 views

If we add only 1 primer in PCR

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 (...
0
votes
0answers
7 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
20 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 lose of blood pressure. I'm trying to understand what role water is playing in these cases and how ...
1
vote
0answers
15 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 ...
1
vote
1answer
16 views

Which magnoliophyta groups are NOT pollinated by bees and why?

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 ...
2
votes
0answers
28 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 ...
0
votes
1answer
21 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 ...
-6
votes
0answers
27 views

why DNA is not harmful to us even if it is acidic?

why DNA is not harmful to us even if it is acidic? please answer the above question.
0
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0answers
30 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 ...
0
votes
1answer
30 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 ...
0
votes
2answers
23 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 ...
0
votes
1answer
31 views

Plant cell question in age 12 science test

Can anyone help me answer the questions in the attachment about plant cells. It was a question in my 12 year olds science exam. I'm baffled as I think he has given a good knowledgable answer but it ...
0
votes
0answers
15 views

How is death of a tree defined?

When a human's brain is dead and the heart stops beating, he is generally considered as dead. Such definition can be made because human has a centralized coordination system and a critical organ that ...
0
votes
0answers
28 views

Why can't we use computer mouse like a pencil? [on hold]

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 ...
-2
votes
0answers
13 views

what are two materials that are reabsorbed during the reabsorption phase in the process of urine formation? [on hold]

what two material are reabsorbed during the reabsorption phase in the process reabsorption phase? and are there more than two. If not the two main ones?
0
votes
0answers
6 views

Why does referred visceral pain not have a referred cutanous pain counterpart?

Most textbooks (for example: Neuroscience, by Dale Purves and colleagues) describes referred pain from visceral nociceptors as caused by synapsing of the afferent nociceptive signals on secondary ...
-3
votes
0answers
14 views

create a feedback model using a flow chart that illustrates how male hormones regulate and maintain homeostasis [on hold]

Just a step by step paragraph or digram of how males hormones regulate and maintain homeostasis
-5
votes
0answers
17 views

Is the human brain the muscle with the greatest leverage? Menu to brain [on hold]

1) The brain being our best lever, muscularly, shouldn't we treat it better? 2) Diet being our best conduit to good health in general, don't we need more competition in the food market, relative to ...
0
votes
1answer
27 views

How does mad cow disease evade immune system?

The mad cow disease is caused by prions right? So how do prions avoid white blood cells and antibodies?
0
votes
2answers
22 views

Is it possible to stop Escherichia Coli from reproducing?

I am a biology student and a professor asked me to research this question. I have not found much information, only that during the process of asexual division, by blocking a couple of genes, you can ...
0
votes
0answers
13 views

Kinases that are ATP-sensitive at physiological conditions?

Phosphorylation is an ATP-dependent process performed by kinases. At physiological conditions it is generally assumed that ATP concentration is high enough so that ATP is not a limiting factor. ...
-3
votes
0answers
24 views

Can You explain this readtion? [on hold]

Reagents bind to the functional group of biological molecules by covalent or non-covalent bonding or interactions. Explain this interaction between each reagent and its prospective functional group.
0
votes
1answer
15 views

Full Sequence for Plasmid pMG101

I am trying to find the full plasmid sequence for pMG101. I have been looking through other papers that have sequenced this plasmid. The GenBank access numbers I got are the following: AY009372–...
1
vote
1answer
29 views

Scoring matrices in BLAST

I was reading wikipedia page on BLAST It says that scores are created by comparing the word in the list in step 2 with all the 3-letter words. By using the scoring matrix (substitution matrix) to ...
1
vote
0answers
19 views

Can dead scorpions still sting?

I found a dead scorpion on the sidewalk today, and brought it home, being careful not to touch its stinger. Bees can sting even after they are dead, if you step on them in such a way that it pushes ...
1
vote
1answer
24 views

Rules of motif forming

I want to understand how a motif is present or not, can be deduced from a PDB file. Are there any rule of thumb for forming 3D motifs? Like a series of helices and sheets in some direction will lead ...
4
votes
0answers
52 views

Is there a naturally occurring mechanism in the body for cleaning plaque buildup in arteries?

Is there a naturally occurring mechanism in the body for cleaning plaque buildup in arteries ?
0
votes
1answer
19 views

Validation by PCR of a lowly expressed gene in microarray

I am interested in validating the precence of a gene (FETUB) whose expression is in the lower quartile of the microarray (see figure in link). https://drive.google.com/open?id=...
5
votes
2answers
804 views

A and AB blood types from B and O?

My grandma is O- blood type, my grandpa is B+, but my mother is A+ and my aunt is AB+. Is that possible? I've just looked at different sources like this and all of them are saying that from O and B, ...
6
votes
1answer
51 views

What is this - nest, eggs, fungus?

Anyone know what these are? I found them in our local park today attached to a wooden earth-retaining wall.I was thinking some kind of insect nest/egg sac (spider?) They're about the size of a medium ...
-5
votes
1answer
36 views

Contradiction to evolution [on hold]

It is said that evolution occurs according to requirement ..if it is true then women who really needs safety should be strong and men who don't should not be strong...isn't it contradictory?
0
votes
0answers
18 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 ...
1
vote
1answer
22 views

Role of the Hypothalmus in the control of Blood Sugar

In homeostatic regulation of blood glucose, the receptor and effector is the Pancreas, but how does the control centre — the Hypothalamus — connect and link into this process?
4
votes
1answer
51 views

why do overweight individuals sweat more than ordinary people?

A common phenomenon that I have noticed while traveling in buses is that overweight individuals seem to sweat a lot more than people with ordinary weight. Is this a coincidence or is there some ...
5
votes
1answer
54 views

Why do we have wrinkly fingers after swimming?

I found an explanation for my question here http://www.pitara.com/science-for-kids/5ws-and-h/why-do-we-have-wrinkly-fingers-after-swimming/, which suggests that water washes out sebum (special oil, ...
1
vote
1answer
17 views

Kinetics and de novo protein prediction

De novo conformation predictors usually function by producing candidate conformations (decoys) and then choosing amongst them based on their thermodynamic stability and energy state. Most successful ...
0
votes
0answers
11 views

Quantifying the number of fragments from RAD library

I have a series of single-end reads from a RAD library of 48 uniquely tagged individuals in fastaq format. The data comes from a small MiSeq run. I want to know the number of unique fragments per ...
1
vote
1answer
34 views

How do RBCs survive without a nucleus?

So, I was reading this question Why do mammalian red blood cells lack a nucleus? Now, I do not yet have the privilege to post a comment and so I am forced to create a new question to clear my doubt. ...
0
votes
0answers
10 views

Why can´t our dog bark with a high pitch while holding a stick in her mouth? [migrated]

When I throw sticks with our dog (a Swiss shepard) she usually barks at me with a high pitch when I´m about to throw the stick. Sometimes she still has another stick in her mouth and in that case her ...
1
vote
0answers
14 views

Viruses affecting transmission capability of mosquitoes

I've read about bacteria affecting the transmission capability of mosquitoes. For example: Wolbachia suppresses dengue transmission When mosquitoes were given antibiotics that decreased their gut ...
0
votes
0answers
13 views

What are the chances that a hemophiliac male and an unaffected, non-carrier female could have a baby that is a hemophiliac male? [on hold]

The hemophilia gene is located in the X chromosome, which male babies get there X chromosome from their mothers. So the chances of this male baby being hemophiliac is zero. Correct?
0
votes
0answers
33 views

What are some explicit examples of natural selection's predominat role in the origin of new species? [on hold]

I am taking an evolution course and I found examples in textbook that include examples of organisms that came into form long, long time ago. I could not directly relate their formation to natural ...
0
votes
1answer
26 views

How to use Transect-based sampling to select sample trees [on hold]

I was wondering if you help me how to use Transect-based sampling to select sample trees
-1
votes
0answers
32 views

Does washing salad *really* remove E-coli? [migrated]

I don't generally wash salad unless it looks dirty. It's not that I'm unaware of E-coli and pesticides etc, it's that I don't have any conviction that rinsing them with water will significantly remove ...
0
votes
1answer
31 views

How diverse are species in remote, isolated areas on Earth? [on hold]

If we consider land areas that have been largely isolated from each other from a human point of view, but with a similar climate – for example, a part of Europe and a part of Americas with a similar ...
3
votes
0answers
25 views

What constitutes FDA's First in Class designation for New Molecular Entities?

What constitutes a First in Class designation for new molecular entities? I've seen this term on FDA documents, as well as in databases (Chembl for example), but I was curious if there are any set ...

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