All Questions

-1
votes
0answers
14 views

Is phosphorylation anabolic or catabolic? What about decarboxylation?

Is phosphorylation anabolic or catabolic? What about decarboxylation? Phosphorylation adds a phosphate group and decarboxylation removes a carboxyl group. But neither seems to create or fuse molecules?...
0
votes
1answer
32 views

Does digestion require hydrochloric acid?

Would our digestion function any differently if we secreted something else, like sulfuric or nitric acid, instead? I'd assume an acidic environment may be required, but not sure if chloride is also ...
0
votes
0answers
13 views

RNAi termination

Can you stop an ongoing RNAi after transfection with a vector containing siRNA? I want to experiment on gene function loss effect, using RNAi, and gene function gain, using stopping the RNAi.
0
votes
0answers
14 views

Are there any non-surgical ways to increase facial-width-to-height ratio? [on hold]

Source. Aside from surgery (including any form of cosmetics even if non-invasive), what can increase this measurement? Drugs? Exercises? Diet? Gene expression? I want to know my options.
-1
votes
1answer
24 views

Is sugar absorbed into the bloodstream through the walls of the mouth?

If you let a piece of candy melt in your mouth - BUT NEVER SWALLOWED - would the sugar be absorbed through the walls of your mouth?
0
votes
0answers
8 views

probability of hairpin vs self-dimer formation?

I have a linear ssDNA oligo that is designed such that the ends are complementary, and conducive to hairpin formation (see attached figure). My question is, which has a higher likelihood of formation, ...
0
votes
0answers
16 views

Why different people have different Sympathetic reaction

We all know that sympathetic mechanism is similiar in humans . Why people react differently for example one may ran after seeing a lion while other may keep standing or may shout without escaping ?
1
vote
1answer
35 views

Assumptions for Nernst Equation

While I am familiar with some of the conditions for the Nernst Equation, for example: 1) "The membrane is only permeable to one ion even if there are several other ions in the system" there is an ...
2
votes
0answers
21 views

Does constant pressure cause muscle atrophy, and if so, why?

I read on https://en.wikipedia.org/w/index.php?title=Gluteal_muscles&oldid=876760828#Clinical_significance: Sitting for long periods can lead to the gluteal muscles atrophying through constant ...
-1
votes
0answers
11 views

What is the meaning of child additive to dominance effect, dc/ac =0.5?

I am conducting collaborative research about family-based genome-wide association study, where I am using the genotypes data. There is a point called "child additive to dominance effect, dc/ac =0.5", ...
3
votes
2answers
56 views

What is (probably) the closest living relative of the trilobite?

The trilobites vanished from the fossil record many millions of years ago, but they were obviously arthropods of some sort. Do we know which animals are their closest living relatives? I've heard both ...
2
votes
1answer
25 views

Placebo Effect Reactions

Why do some people actually experience measureable effects when given a placebo(fake drugs) versus the actual drug? Is is the power of suggestion, belief, or something else?
-1
votes
0answers
12 views

If epinephrine was bound but has been washed away, does the cycle continue and still produce glucose-1-phosphate?

Same for serotonin- if serotonin is bound and is washed away, is it still able to form memories and produce signal release?
0
votes
1answer
46 views

Is it correct that the nicotinic acetylcholine receptor has nothing to do with Dopamin?

As I know Dopamine is almost exclusively produced via metabotropic receptors, is it possible for a nicotinic ACH receptor to influence a dopamineric neuron? Can a nicotinic ACH receptor cause a ...
1
vote
1answer
37 views

If overcooked hard boiled eggs show these green sulfide rings, why do scrambled/fried eggs not show this?

In the image above, the dark green rings are ferrous sulfide rings, caused when the sulfur from the egg white reacts with the iron in the egg yolk when the egg is overcooked. I was wondering, given ...
2
votes
1answer
44 views

What species is this lizard?

A small green lizard (20 cm in size). It was found in the direct neighboorhood of a house, in a small village in the Hungarian hills south of the Balaton lake. It was found in the middle of the day. ...
1
vote
1answer
23 views

Increase rate of change in coding regions?

If a sequence is under selection will it acquire more changes over time because of faster fixation than if changes were neutral? Is this true or am I missing something?
3
votes
1answer
42 views

Which complexes physically pump protons in photosynthesis?

The cytochrome b6f complex is often drawn as pumping protons, but then someone told me that actually there is no pumping, rather the Q cycle. According to this view, what actually moves the protons ...
0
votes
0answers
22 views

Why aren't artificial gills used for diving together with oxygen tanks?

Artificial gills aren't used for diving, not because they can't extract oxygen out of water, but because they won't provide enough oxygen for someone to breathe (only arround 1% oxygen in water ...
1
vote
0answers
12 views

Genotyping technologies maintaining phase

My professor made the statement that genotyping technologies don't maintain phase. What exactly is meant by this phase? I guess I'm more confused on what's the difference between sequencing and ...
1
vote
0answers
16 views

Carbon Dioxide, sea water, diatoms, and oxygen

I recently viewed a documentary called “Flying River Observed in Tallest Structure in South America, National Geographic” (https://www.youtube.com/watch?v=HjpPsZTwsaM). In this film, as an aside, it ...
1
vote
0answers
30 views

What exactly happens to animals that fail mating rituals?

Quite a few animals (usually males) participate in various mating rituals to showcase their fertility as mates. While presumably, the successful ones get a chance to mate with females, it occurred to ...
0
votes
0answers
4 views

Virulence Factors of Francisella tularensis

After completing research on the virulence factors of Francisella tularensis, I was wondering about a few specific structures/toxin and whether these are virulence factors of Francisella tularensis or ...
4
votes
2answers
52 views

What type of Caterpillar is this?

What type of Caterpillar is this? My hand brushed against this last night and it burned and itched immediately. Today it's starting to blister, is red, and itches all around the bumps. I was ...
1
vote
0answers
28 views

Is it possible to stop more/extra fat from being stored in the body?

I don't mean simply by restricting eating or upping the activities, but a way to basically stop the body from adding more fat on itself down on the bio level. For example, I'm not too knowledgeable on ...
0
votes
1answer
13 views

What are primary reasons for the failure to localise/anchor sequences in genome assemblies?

What are the primary reasons for the failure to localise/anchor sequences in genome assemblies?
-1
votes
0answers
20 views

How does the energy from ATP get to converted to mechanical energy/motion?

OK, so ATP releases energy. At what point are things moving? How does this "energy" lead to a muscle fiber contracting?
1
vote
0answers
39 views

How long do sperm live outside of the human body ? Is it minutes hours or days?

How long do sperm last when they aren’t in a body ? in air on on a sheet , etc
0
votes
0answers
20 views

Control of protein by DNA sequence with respect to RNA polymerase

I want to know how can a particular base sequence like the TATA box in the -10 region of a gene is able to regulate a protein's function like RNA polymerase? What kind of interaction really occurs?Is ...
4
votes
1answer
240 views

What is the largest species of polychaete?

My Google searches seemed to avail no results. My question is: What is the largest living species in the class Polychaeta? That's about it. I understand that there will be few accessible weights for ...
-1
votes
0answers
21 views

this is a question regarding distance between genes,how is this question done? [closed]

[![this is a question regarding distance between genes,how is this question done?][1]][1] [1]: https://i.stack.imgur.com/1xtF1.jpgthis is a question regarding distance between genes,how is this ...
0
votes
0answers
10 views

How can MMLV reverse transcriptase add cytosines to the 3'-end of cDNA

I am working on the mechanism of SMART, a kind of reverse transcription strategy. However, I am confused about the terminal transferase activity of MMLV enzyme. It have been reported since 1998, ...
0
votes
0answers
17 views

Why does ambient pressure affect gas pressure in blood? [on hold]

Scuba divers suffer from decompression sickness if they ascend from the depths too quickly. This is due to embolism of nitrogen in the blood vessels. However, the only difference in pressure given to ...
0
votes
0answers
8 views

Re-stain slice using a different secondary antibody?

I stained a free-floating ~300uM brian slice using 4 different 1º antibodies (rabbit, chick, mouse, rat). For the mouse primary, I mistakenly used an Alexa-350 secondary, when I should have used 594. ...
0
votes
0answers
18 views

How many neurons do we have in our forearm?

I am developing a neural interface, getting signals from the forearm and mapping them to hand gestures. The question we have at the moment is what is the upper bound of information bandwidth that we ...
1
vote
0answers
24 views

What causes bio electricity? [closed]

When it is said that “electrical impulses sent from the brain” how is this charge flow produced?
-1
votes
0answers
23 views

Halving an animal to create two smaller ones [closed]

Childlish question : Let's say I'm a mad biologist aiming to make 2 cats from one cat. Using my unlimited skills and unlimited tools, what would happen if I take half of the cells (and other stuff) ...
0
votes
0answers
9 views

Stenothermal Exhalation: Warm or Cold?

The answer might be obvious, but I've wondered if stenotherms like a common house gecko, for instance, might produce sufficient respiratory heat to exhale warm air. Clearly, respiratory heat and ...
3
votes
0answers
24 views

How would the brain represent represent elapsed time?

When we are waiting for an elevator, we know that the elevator will not open right away. There is a delay of 2 or 3 seconds. How does the brain (likely cerebellum) represent the running time of 2 or 3 ...
-1
votes
0answers
20 views

Are the different frequencies of Wifi differently harmful?

Assuming that WiFi IS harmfull (which is a very controverse theory, I know) is there any diffrence in the harmfullness of 2.4 Ghz compared to 5 Ghz for humans?
0
votes
0answers
10 views

Why do my pets have eyebrow patterns?

I own roborovski hamsters and a duprasi. They both have little white “eyebrows” above their eyes. This is very cute, but I’m not sure what function it serves. I know humans have eyebrows to try and ...
0
votes
0answers
15 views

What is the need of dural venous sinuses?

I understand that the venous blood from the brain drains into the dural venous sinuses (which further drains into external jugular vein). My question here is that, why don't the veins from different ...
2
votes
0answers
31 views

Do cats produce DMT?

There is a question on Skeptics.SE that asks if "cats have a chemical in their brains that resembles LSD." I haven't found any similar claim online, but started wondering: Do cats produce (natural) ...
0
votes
0answers
31 views

Tiny bug in Amman-Jordan

I saw this bug many times in my room this spring. Can any one help identifying it?!
7
votes
1answer
176 views

Why did they expect Astronaut Scott Kelley's telomere shortening to accelerate? (they got longer!)

The NPR News article and podcast Scientists Share Results From NASA's Twins Study says: SCOTT KELLY (NASA Astronaut): You know, the symptomatic stuff is fine. I don't have any long-term negative ...
-2
votes
1answer
33 views

What is the gene for height?

Height doesn't seem to be linked to sex, which is surprising. I have seen ways to predict children's height and it involves taking the average of both parents height. Upon my search, I did not find ...
1
vote
1answer
37 views

What kind of house plant is this?

This is a house plant I have that I love but I don’t know what it’s called. I’d love to research it and even buy more but it’s name is a mystery. Picture taken in Ontario, Canada.
6
votes
1answer
52 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 ...

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