All Questions

6
votes
1answer
56 views

Can anybody identify this kind of plant?

Location: Low Tatras, Slovakia, elevation: 1800 m. Can anybody identify this plant from Slovakia mountains?
1
vote
0answers
7 views

Why are there fewer ospreys in upper New England?

I have a book by the Audubon Society on building bird houses. In this book the chapter on ospreys shows their breeding range to include Canada and then a pocket around the Connecticut and New York ...
0
votes
1answer
14 views

Does a bird nest out of its breeding range?

I have a book by the Audubon Society on building bird houses and for each bird they show a breeding, wintering and all year range. Do the birds only breed in their breeding range, or in both breeding ...
-2
votes
0answers
17 views

Could calculated alcohol intake cause brain growth?

It is well established that to build muscle, one must tear muscle tissue by overuse; the healing process results in some overcompensation, resulting in muscle growth. I understand (if vaguely) that ...
0
votes
0answers
21 views

Living potato clock

Could a potato stay alive and power a clock while growing in the ground? Side question: How much power could come from one potato?
1
vote
1answer
26 views

How does the zygote divide much faster than other cells?

Normally a cell has a mechanism that controls its division. As far as I know, it checks surface area and stuff like that to decide to go for mitosis or not. However, this is not the case for a zygote....
4
votes
0answers
23 views

Why do bulls-eye rashes look like they do?

People infected with Lyme Disease often present with an erythema migrans ("migrating redness") rash. Most often, these rashes are in the shape of a bulls-eye. Rash image. Presumably, this is a ...
0
votes
0answers
14 views

Is it possible for a human being to live on a different day cycle?

I am considering writing a story where a character lives on a 30-hour day cycle. That is, this person sleeps for 9.5 hours and is awake for 20.5 hours. Then this person repeats the schedule. I'd ...
1
vote
1answer
18 views

Can motor neurons in the brain stem start movements?

Supposedly (consciouss) movement is started in the cerebral cortex. But some time ago I've read a research which stated it might be possible some movements (not specified which ones, probably mean ...
0
votes
1answer
19 views

How is Pseudomonas aeruginosa diagnosed?

I know that P. aeruginosa is cultured on an agar plate, but which media or assays make it distinct from other Gram-negative bacteria?
1
vote
1answer
8 views

Are the processes on afferent neurons that go from the sensory receptor to the cell body considered axons or dendrites?

References on pain fibers say impulses move along axons to the CNS, but I thought that by definition axons carry impulses away from the cell body.
0
votes
1answer
27 views

Do birds require cilia for left/right symmetry during their embryological stages?

I know that in humans ciliary dyskenisia can lead to a Situs inversus, is this also the case for birds and reptilians?
2
votes
1answer
42 views

Does every protein starts with Methionine amino acid [duplicate]

During process of protein synthesis we need AUG Codon to start translation .As we know this codon codes for Methionine amino acid so can we say that every protein starts with Methionine amino acid ?
1
vote
0answers
27 views

In biological nitrogen fixation, the electrons required to reduce dinitrogen to ammonia are provided by which compound? [closed]

The reaction is as follows: N2 + 16ATP + 8e- + 8H+ → 2NH3 + H2 + 16ADP + 16Pi From where are the 8 electrons coming from? We know that in photosynthesis, the electrons are supplied by the oxidation ...
1
vote
1answer
21 views

Does the yolk sac for Danio rerio form at the vegetal pole?

Does the yolk sac in general form always at the vegetal pole? If so, is this the case for Danio rerio (the zebrafish)?
0
votes
1answer
43 views

What are the (evolutionary) advantages of secondary transport?

Secondary active transport uses electrochemical gradients as a source of energy for the uphill transport of substrates (coupled to downhill transport of the ion). However except for in a few cases (e....
3
votes
1answer
23 views

How are electrons entering the electron transport chain in cellular respiration energised (excited)?

In photosynthesis, electrons are excited by light energy from the sun (photoactivated). How do they become excited in human cellular respiration? I believe it has something to do with NADH and ...
1
vote
1answer
18 views

Exocytosis of synaptic vesicles

I'm reading the following paper: http://jcs.biologists.org/content/123/6/819 The part I am really confused about is when they say: Exocytosis appears to use two alternative pathways: clathrin-...
0
votes
0answers
22 views

How to prevent mold from building on food and how to kill it along with neurotoxins?

I have some food/fruits chopped in very small parts, whatever it is that needs to be conserved during long time, when it is given to me it can be somewhat wet or humid, after some time of keeping it ...
3
votes
1answer
107 views

Identify This Glowing Insect

When I was walking in my garden at night I saw this small glowing insect, can you identify what is this insect? Location: Middle-East Palestine Size: Length about 1 CM This image in the dark (see ...
0
votes
1answer
24 views

x-linked recessive inheritance and correlation for males

I was inspired by a discussion in this thread. Wikipedia lists a number of disorders linked to recessive genes on the x-chromosome. One typical example is red-green color blindness. Now wikipedia says ...
0
votes
1answer
29 views

Why do spinner dolphins spin?

Spinner dolphins have a behavior where they jump out of the water and spin a bunch of times in the air. Wikipedia's article on this just states These spins may serve several functions and doesn't ...
0
votes
1answer
26 views

Why aren't all strongly self-recognizing T cells made into regulatory T cells?

Negative selection in T cell development is often simply described as preventing effector T cells from recognizing self-antigens. This is complicated by regulatory T cells developing from T cells with ...
1
vote
0answers
30 views

How hot water burn works?

At age of 6 I accidentally dipped my hand into a boiling indian curry(Sambar) which was in a large pot. I got a Boiling Water Burn(Just like in the picture but with a little more radius) in my hand ...
1
vote
1answer
51 views

Is cannibalism part of mainstream food-chain?

There are some species who sometimes eat their own kinds. Is this cannibalism considered their regular food? Do the link in food-chain for those animals make a loop on themselves? Can this statement: ...
2
votes
0answers
25 views

What is the difference between Warburg effect and Crabtree effect in metabolism? [closed]

In addition to answering my question, please suggest a good review article that provides comparison of the above effects. Which pathways affect central carbon metabolism to produce these effects? Also,...
6
votes
1answer
768 views

Identify This Plant (Flower)

I just bought this plant from flower shop, after it flowered it was very beautiful red flower, can anyone tell me what is this flower?
1
vote
0answers
29 views

Mother's physiological response to baby crying

I have read several articles [1,2] that talks about the physiological response in mothers when their babies cry. Is there any studies performed and published that show that this is not true ? https:/...
1
vote
1answer
52 views

Do the left half and right halves of the diaphragm undergo the same displacement during breathing?

Do the left half and right halves of the diaphragm of a normal person move exactly the same distance between inhaling and exhaling?
6
votes
1answer
67 views

What are the predators of Glaucus atlanticus?

I'm researching the Glaucus atlanticus, also known as the blue glaucus, among various other names, but after reading quite a few articles and searching on the Internet as many different ways as I can ...
-3
votes
0answers
51 views

What is this stuff?

What is this stuff? It was found on a tree in New Hampshire and nobody here can identify it.
6
votes
1answer
195 views

Why clotting does not occur during Menstruation

As we know when we get injured our body's clotting systems stop the bleeding. So why does it take days for menstruation to stop ?
1
vote
0answers
12 views

In oscillometric blood pressure measurement, why do we assume that highest oscillations correspond with mean arterial pressure?

As far as I've seen, the point on the oscillometric curve where there are greatest oscillations represents the mean arterial pressure (MAP). My question is - why? What is the logic behind this ...
1
vote
1answer
22 views

Are phylogenetic tree construction algorithms any different than general clustering algorithms?

I suspect the answer is no. But I don't know enough to be sure that that is the case. Of course phylogenetic tree construction uses biological knowledge, e.g special distance metrics, but does it ...
3
votes
4answers
91 views

What's the benefit of the average human body temperature?

Why would the body choose a resting temperature of 36.1c to 37.2c? It seems a very inefficient mechanism of survival considering the typical ambient temperatures on Earth. If there is a benefit to ...
1
vote
1answer
38 views

What does “crude” mean in this context?

Taken from Ian Freshney's Culture of Animal Cells: The enzymes used most frequently for tissue disaggregation are crude preparations of trypsin, collagenase, elastase, pronase, Dispase, DNase, ...
1
vote
0answers
22 views

Can someone help me identify this Brazilian spider?

Does anyone know anything about the identification of this spider? Sorry, but it's the only image I have. It was shot at 2004, January 25th (summer), at 11:27 AM, in Cerrado biome at Minas Gerais ...
0
votes
0answers
26 views

Sulforaphane vs. Hyperthermic conditioning (sauna use) which would induce a greater heat shock response in the human body?

I’m curious to know which would induce a greater upregulation of heat shock proteins, consuming sulforaphane or putting the body through heat stress such as using the sauna. Sulforaphane reference- ...
-1
votes
2answers
87 views

Evolution versus Creationism [closed]

If nature, or any aspects of it, are intelligently designed, how could we tell? How would we be able to test that hypothesis?
-1
votes
0answers
25 views

How do I search for specific information in PubMed?

I’ve done experimental work with Brucella for my final task in my degree and now I’m looking forward to write a good introduction. The only issue is that my knowledge about how to properly search for ...
0
votes
1answer
27 views

Spatially Encoded GPCRs?

I'm reading this paper, and I'm already lost in terms of what they mean by GPCR signaling is spatially encoded. How can signaling be spatially encoded?
0
votes
0answers
19 views

Which animal is this? (Bone)

Which animal is this? It was found in Denmark in a few centimeters depth. The length is approximately 12 centimeters.
0
votes
1answer
65 views

Is it possible for human beings to feed through the nose?

There is a prediction on a futurology site that food can be eaten by inhalation https://2050.earth/predictions/smell-can-feed-you Although aerosol foods do exist they are still eaten by the mouth. ...
1
vote
0answers
18 views

The correlation between a leaf's age and its length in the initial stage of growth

I am building a machine learning algorithm which predicts the age of a leaf before its maturity period based on its measured length or area. I would like to know whether there is a mathematical ...
0
votes
0answers
15 views

What kind of Porcupinefish is this?

The fish on this picture has a body length of about 10cm. Is it a Slender-spined porcupine fish? I've searched Slender-spined porcupine fishes on wiki and youtube, and found that the shapes of ...
0
votes
0answers
9 views

How to grow Bacillus subtilis spores for making natto?

I enjoy making fermented foods, one of them is natto, which is cooked soybeans fermented with B. subtilis. I usually buy the B.s. spores online, but they are somewhat expensive and often hard to find....
1
vote
0answers
58 views

How does the emerson effect produce a higher rate of photosynthesis?

Can anyone explain how the emerson effect works to increase the rate of photosynthesis, and as the original studies were done over 50 years ago, how much research is still done into this area? Or is ...
1
vote
2answers
69 views

What is a “pan-specific” antibody?

I am new to biology. I searched a lot to find an article that explains what "pan-specific" antibody is but I could not find anything substantial that would help me understand what it is. An example ...
4
votes
1answer
47 views

Mechanism of redirected blood

I've read several fitness articles mentioning redirected blood flow to muscles that are in use. However, they never mention how it works. Is it local and specific to the muscles in use? Or, for ...
0
votes
0answers
8 views

Rhodamine 123 Staining Function

How does Rhodamine 123 act as a probe for Mitochondrial Staining? What is the Exact Biochemical Basis? and can it Stain Chloroplast as well? Thanks in Advance

15 30 50 per page