2
votes
0answers
17 views

Botany related Genetically improved Leucaena leucocephala seeds

I am looking for a fast growing Leucaena leucocephala seeds. Now, I am cultivating Leucaena leucocephala which can grow 6.00 Meters in a year. But I am looking for a genetically improved seeds which ...
3
votes
1answer
21 views

Why are particulate matter toxic to humans?

There are many studies on fine particles (PM2.5) and their fully negative effect on human health. There doesn't seem to have any positive aspect of inhaling particles, except very particular ones, but ...
2
votes
1answer
33 views

Why does a housecat (or other predator) play with it's food before killing and eating it? Does it make the food taste better?

I've read a couple people theorize that a cat playing with a mouse causes the mouse's body to be flushed with adrenaline before the final kill and that this adrenaline makes the meat more ...
1
vote
1answer
50 views
+50

Breakdown of energy expenditure at the level of a single cell

The metabolic rate measures how much energy an organism expends over a unit of time. Its breakdown for the human body in terms of its functions is well documented : so much for the heart, for the ...
-1
votes
0answers
22 views

What nutritions do a human need? (survival storage of food for crises) [on hold]

I wonder how feasible it would be for a government to store food/nutritions to feed the population for two years (long enough to deal with most imaginable disaster scenarios such as "doomsday clouds" ...
2
votes
0answers
19 views

How does Halosulfuron-methyl kill nutsedge, while leaving lawn grass and most weeds undamaged?

I use Halosulfuron-methyl to control yellow and purple nutsedge in lawns. This chemical acts by interfering with the acetolactate synthase enzyme, which quickly slows cell division, and growth at all ...
4
votes
0answers
18 views

How does MSMA kill crabgrass with only minimal damage to lawn grasses?

I use MSMA (Monosodium methyl arsenate) to kill crabgrass in lawns. I am not certain of the mode of action. How does this chemical work? How does it target the annual grassy weeds, without damaging ...
4
votes
0answers
21 views

Why doesn't Clopyralid damage cool season lawn grasses?

I use Clopyralid (3,6-dichloro-2-pyridinecarboxilic acid) to kill broad leaved weeds in lawns. From my understanding, it works by mimicking an auxin which affects plant growth. Naturally this pulls ...
5
votes
1answer
31 views

Can neurotransmitter depletion cause short-term drug tolerance?

I'm curious to know if neurotransmitter degradation factors into drug tolerance and neural conduction and, if so, to what extent. As I recall from textbooks I read as an undergrad, one mechanism of ...
0
votes
0answers
15 views

Any relevant knowledge/studies about voluntary goose bumps

I'm not entirely sure how normal this is, but since I was a child, I've been able to produce myself voluntarily a "chill" sensation that seems to start on my head and traverse the rest of my body, ...
2
votes
0answers
21 views

Isoprene and Acrolein emissions of wood burning, insect burning and smoldering tobacco cigarette

I'd like to identify what makes a fume more or less toxic, above all those from commonly smoked organic stuff: tobacco, cannabis, comparatively to less common ones. For that, we can focus on 2 gas ...
5
votes
1answer
43 views

Why do Mangoes have a single large seed, and not multiple small ones?

I was just thinking about this, wouldn't it make more sense for a mango to have multiple seeds, as it would allow more seed propagation?
1
vote
1answer
25 views

Does documentation exist that shows the evolutionary connection between common horses and the okapi?

I'm trying to put together some documentation on the relation between the common (modern) horse and the okapi. I've found a tree that shows that connection but it has no references. I'm hoping that ...
3
votes
1answer
35 views

Hypersensitivity Simultaneously in Ear canals

I got experimental data where hypersensitivity (i.e. tonic pain when touching ear canal) was recognised for about 100 minutes. I do not know which type of hypersensitivity is this one. IgM can ...
2
votes
1answer
95 views

Is there some genetic variance underlying music appreciation?

Is there any research done on the genetic variance for Music appreciation? If not, why is there no genetic variance for this trait?
8
votes
1answer
91 views

How can flies sense mirrors?

I've noted that flies in my house have no problem landing on even perfectly clean mirrors. Why don't they fly straight into them? Can they sense that there is a surface there, even though they can't ...
5
votes
2answers
222 views

What limits the speed of human perception?

I'm writing a novel in which the main character's perception and thought processes are sped up considerably, in essence slowing down the world around him. To others, it seems like his reactions are ...
8
votes
1answer
458 views

What is the female equivalent of the morning erection that some men experience?

There was question about what causes "morning wood." It was answered that the erection in the morning is caused by decline of norepinephrine during REM sleep. Which in part allows to prevent ...
4
votes
1answer
27 views

What does hemozoin do?

My bio book refers to HEMOZOIN that is responsible for the shiver during malaria. How does hemozoin work to raise the body heat?
2
votes
1answer
23 views

Why does crying lead to a running nose and reddened nose tip?

Why do we have a running nose for quite some time after crying? It persists even after we stop crying. Why is it so? I have faced this always. Also, why does our nose redden on crying for long?
4
votes
1answer
48 views

Gender and age-specific mutation rate in plants

Background General concept According to Cochran and Harpending (2013), mothers transmits on average a number $x$ of new mutations to their offspring. This number $x$ is independent of the age of the ...
3
votes
1answer
26 views

Why do we feel cold on having fever?

Why do we feel terribly cold on catching fever of any sort, however our body becomes hotter? Why is it that a rise in temperature makes the sufferer feel colder? Also, sweating symbolises betterment ...
4
votes
1answer
23 views

Re-solidify disturbed agar plates

I am stuck in trouble while pouring LB agar onto my petri dishes. I had to add kanamycin to my plates just before it started to solidify, out of forgetfulness, which I tried to mix using the tip. The ...
4
votes
2answers
32 views

Where can I find a list of common enzyme cofactors and/or co-enzymes?

Where can I find a list of enzyme cofactors and/or co-enzymes, ordered by how common they are? For example, $O_2$, $H_2O$, $ATP$, $ADP$, $NAD$, should be ranked in the first places, because they ...
0
votes
0answers
35 views

Medical Student: How can I get a yr old female to gain trust in me in a abdominal exam? [closed]

please be very specific with your answers. This is a medical question in which I need to know about how to calm a female adolescent and relax her during an abdominal exam.
4
votes
2answers
196 views

How many different protein coding genes are in the Human Biome?

There are approximately 20k protein-coding genes found in the human genome. This number is presumably very small when considering all the genomes found in the diverse microbes associated with the ...
7
votes
1answer
856 views

Dark veil when getting up too fast

I was asking myself this weird question. When you get up or stand up too fast, sometimes, you see something like a dark veil, and you aren't able to see anything distinctly for 2 or 3 seconds, then ...
3
votes
0answers
20 views

Does a presence of ants on a plant mean that the plant has been infested by aphids?

Ants protect aphids from their predators (such as ladybirds): Aphids and other hemipteran insects secrete a sweet liquid called honeydew, when they feed on plant sap. The sugars in honeydew are a ...
2
votes
0answers
16 views

Why are watermelons sweeter in the center?

Today I had a slice of watermelon and when I reached the outer parts of the pulp I wondered why those are less sweet. Whether or not the sugar occurs in crystalline form in watermelons is still an ...
25
votes
1answer
3k views

What causes morning wood?

Sometimes men wake up with an erection in the morning. Why does this happen?
0
votes
0answers
17 views

What chemical form of vitamin A is in chicken's egg yolk?

After doing some existing background research I am confused as to exactly what, in an unfertilised chicken egg's yolk, offers what we intake as 'Vitamin A' upon eating it. Plants typically produce ...
6
votes
2answers
455 views

Is it possible to genetically modify a plant at home?

Would I be able to genetically modify a plant at home? What equipment will be necessary? I think it might be a fun change from the 'norm'. Are some plants easier to modify than others?
1
vote
1answer
15 views

How do mushrooms react to being grown in a microgravity environment?

I'll use Agaricus Bisporus as an example mushroom. If cultured in potato dextrose yeast extract agar, will the resulting growth grow in a normal pattern? Will the sporocarps emerge from the surface ...
-1
votes
0answers
41 views

How to bring back to life a dead body? [closed]

From biological perspective, is it possible to bring back to life a dead body? I need a thoroughgoing answer.
4
votes
1answer
41 views

Microbial Fuel Cell Reaction

I found a formula online which explained the reaction which occurred in the anode chamber of a microbial fuel cell but there was a typo $\small NADH + Ferredoxin_{(ox)} (NADH-Ferredoxin\ ...
1
vote
0answers
40 views

On the mechanisms of cellular growth [closed]

Is there such a thing or process of 'forced cellular' growth that is initiated within a biological system 'W' where it could cause cellular growth and/or repair where it is not 'normally' required ...
1
vote
0answers
23 views

Experimental studies of bacterial adaptation to changes in nutrients of culture medium

Are there experimental studies that measure how a population of bacteria in continuous culture evolve when submitted to changes in the concentrations of metabolites in the culture media? For example, ...
3
votes
0answers
19 views

Cross section of actin network in neurites

for a simulation I am developing I would like to know how the actin network in neurites is distributed. Is actin confined to the periphery or is the whole neurite shaft containing actin with a rather ...
2
votes
1answer
86 views

Why does chewing enrage me?

Whether it's snacking on chips, munching on salad, or simply chewing gum, when I hear someone do it within an earshot, it drives me completely bonkers! It doesn't matter if it's my girlfriend, my ...
5
votes
2answers
59 views

biologically speaking, what's the difference between sleeping and just resting?

I can lay down in a rested position with my mind at ease, but no matter how relaxed I am or for how long i do it, it seems I'll still need sleep eventually. What's the difference - what is occurring ...
4
votes
0answers
22 views

How does Sodium Valproate cause neural plasticity

I have been reading a fascinating paper: Valproate reopens critical-period learning of absolute pitch 18 individuals were given Sodium Valproate (VPA) for a fortnight during which they trained on a ...
-1
votes
0answers
65 views

What really protects South Indians from hair related problems (baldness, greying etc)

I believe eating coconut and its by-products can cure hairfall, greying and baldness problems. Real life example of this is people living in South of India which predominantly have been eating a diet ...
0
votes
1answer
24 views

What attracts cells to: pathogens, professional antigen-presenting cells, and cells with an antigen on its MHC-1 protein?

I have a few questions in regards to attraction/stimulation in the immune system. What attracts leukocytes and antibodies to pathogens in the first place? What attracts CD4+ cells to professional ...
29
votes
2answers
3k views

Why does cracking a joint make noise?

What causes the noise when you crack a joint? Is joint cracking harmful?
0
votes
1answer
70 views

How do ants know where they are going without eyes? [closed]

I know that ants have some sense of direction, but what is the physiology behind this sense?
2
votes
1answer
39 views

Can foxes move their ears independently?

I've read that dogs can do move their ears independently, i.e., point one ear in the direction of a sound without having to point the other one at the same time. Is this a common trait with other ...
3
votes
1answer
31 views

How does sucrose protect bacterial cells in lysozyme solutions?

I have a microbiology question. When we put bacterial cells in sucrose solution with concentration higher than 0.5M we observe plasmolysis - the cytoplasmic membrane detaches from the cell wall due ...
2
votes
0answers
39 views

Does vinegar neutralize the strongly-basic compounds in cement? [migrated]

I have heard that washing one's hands with vinegar is effective in neutralizing the strong bases in cement and is more effective than water. I want to know how cement burns, and what bases are ...
2
votes
1answer
39 views

How much divergence would be needed for classifications as astrobiology?

It is possible that life has invaded mars or the moon by way of probes rovers and other man made tech. How many years or generations of sequential and phenotypical diverge would be necessary to ...
2
votes
1answer
47 views

MOL2 to PDBQT conversion via OpenBabel and MGLTools removes hydrogen atoms

I am trying to convert a MOL2 file (includes partial charges and hydrogen atoms) into a PDBQT file for re-scoring in AutoDock Vina. However, both approaches that I tried don't keep the hydrogen atoms ...

15 30 50 per page