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3 views

Types of bonds in protein chains?

I'm trying to understand possible bonds on the protein backbone. There are a lot of hydrogen bonds and sometimes disulphide bridges. Are both of these non-covalent bonds? I've read that we also have ...
1
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1answer
7 views

Anyone knows who this guy is? Found in Chennai

Found this bug in Chennai. Curious to know what kind it is. Does it pose any danger?
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0answers
17 views

Linker DNA and Genetic Expression

So I was reading on linker DNA, and the textbook only describes it in terms of structure. I was wondering if linker DNA can ever contain genes, and if it can, whether it will always be expressed or ...
-1
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0answers
16 views

Gene therapy with disulfide-linked protein

Say I transduce a nucleic acid sequence that encodes a protein having at least one disulfide linkage. For simplicity, let’s assume that there are only two cysteines in the protein and the side chains ...
0
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0answers
8 views

Will there be less actinobacteria spores in Arizona compared to next to a lake in South Carolina?

Question is in the title. My guess is that there would be less bad bacteria in a home in Arizona than in South Carolina next to a lake. Is that correct? Also, how can one measure the amount of "bad ...
2
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0answers
20 views

Why do some ant workers still wander at night?

As far as I have seen, the vast majority of workers in colonies of diurnal, non-nomadic species return to their nests and remain there at night. The colonies seem to forage largely during the day. ...
-3
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0answers
13 views

Its abt a spider who is locked up inside my box [on hold]

I hve a spider locked ..up inside a box and I hve not fed it anything since three weeks..and I did feed it yesterday ..and it still did not eat the food
3
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0answers
36 views

What is this? I found it in tofino, Vancouver island

I'm wondering what this sea creature is that I found washed up on McKenzie beach in Tofino, Vancouver Island? It wasn't dried up or anything. I've seen hundreds before but I cant find anywhere on the ...
0
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0answers
11 views

What is the difference between filopodia and lamellipodia?

I'm rather new to biology (I'm an applied mathematician) and I'm currently studying models of Notch-Delta dynamics between cells with filopodia and lamellipodia. What is exactly the difference ...
0
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0answers
13 views

Protein A-antibody SDS-PAGE

I wanted to know whether the boiling of Protein A- antibody complex for SDS-PAGE analysis will disrupt the interaction? and result in dissociation of protein A and antibody? Thank you
0
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0answers
7 views

How to map A single N1-methyladenosine (m1A) by primer extension?

I want to map a single N1-methyladenosine (m1A) modification by primer extension. I have silenced a gene which is responsible for guiding modification of m1A then I confirmed the silencing. My next ...
-1
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0answers
25 views

Where to study biology on undergraduate level? [on hold]

I hope I'm asking the question on the right place and in the right format. Anyway, I am really interested in how things work, and from that perspective I want to study molecular biology and ...
0
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0answers
10 views

Single cell lineage tracer

I need a Software or Python code or algorithm which can trace cell lineages. In my case the cells are budding yeast. I have already a segmentation python code and I only need to trace each cell.
0
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0answers
9 views

Reptation theory of polymers

From the repatation model of DNA, we know that DNA or any polymer acts in a snake-like manner in a viscous substance. How does this reptation model help in planning the ligase reaction for a PCR ...
-1
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0answers
10 views

What is plant motility? [on hold]

I have to briefly talk about plant motility in a presentation, but I'm not sure what to talk about. I knwo what motility is and how it works in humns, I'm just having trouble with understanding how ...
0
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0answers
16 views

What is the importance of magnesium ion in Ringer solution [on hold]

Please describe me that what is the importance of magnesium ion in Ringer solution?
0
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0answers
11 views

Unlinked SNP now insignificant after conditional analysis?

I'd like to know if two of my significant GWAS loci (p < 5E-8) independently contribute to my trait. Index SNPs for these loci are approximately 2Mb apart. According to LDLink, these SNPs are in ...
0
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0answers
14 views

Chickpeas as feed for house sparrows , ringneck parrots?

I've put up a bird feeder outside my house, and so far I have been feeding uncooked white rice , and the birds seem to enjoy them. However, since I read somewhere that a variety should be ...
0
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0answers
35 views

Can anyone identify this spider for me? [duplicate]

There is a spider on the window of my office that I've been trying to identify for the past few days but can't quite figure it out. My coworker thinks it's a Furrow Orb Weaver but I'm not sure. My ...
-1
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0answers
26 views

Can anyone identify the insect that produce these kind of eggs?

Someone said that it was termite eggs. I'm kind of confuse so please help.
-2
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0answers
15 views

Linkage in male vs female drosophila

Consider two linked loci that are 50+ map units apart. Then for females, the loci will appear unlinked due to recombination but for males, the loci will appear linked due to the lack of recombination. ...
-2
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0answers
30 views

Whenever I get viral fever,why different smell is coming while I'm excreting my fecal matter? [on hold]

Whenever I get viral fever,why I'm getting different smell while excreting my fecal matter?Is it due to the medicine I took or due to the virus which causing me fever?
4
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0answers
39 views

Inheritance percentiles

I am aware that the average DNA contribution from each grandparent is 25%, while the possible range is 0%-50%. I found a source citing 18%-32% as the "normal" range but this was undefined. I assume ...
-4
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0answers
17 views

Do we have a language to understand DNA? [on hold]

I studied that DNA can be coded in terms base substance name to english letters and this applies to RNA as well. But do we have any next level language to understand the letters in easy way? Example:...
5
votes
1answer
62 views

Identify this unusually-shaped, orange-colored fruit that grows in pairs?

The photos below were taken on the island of Penghu in the Taiwan straight in October. This was in a public place and the small tree (about 3 meters tall, trunk perhaps 8 to 10 cm diameter) had ...
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0answers
19 views

Bacterial Growth Formula Values

In the equation to calculate the growth rate constant (k), LnN2 = kt + LnN1, where do the values of of N1 and N2 come from? Would they be the colony numbers at time 0 and beginning of log phase?
1
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0answers
15 views

official authoritative source for bacterial shape classification

I'm a bit disappointed but after several hours of search, I could not find an official authoritative source for bacterial shape classification. I find a lot, I mean a lot of links but no original ...
-4
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0answers
33 views

Can flightless birds run faster than flighted birds can fly in the same planar direction? [on hold]

Obviously a bird could fly very fast if they point downward with the assistance of gravity, but for instance if you had an ostrich running on the ground in one direction on a flat surface, and a bird ...
1
vote
1answer
35 views

How is C4 pathway more water efficient than C3 pathway in photosynthesis?

In the C3 pathway: 1 H2O molecule is required for the fixation of 1 CO2 molecule. In the C4 pathway: The only H2O molecule used is in the calvin cycle, so 1 H2O molecule required for fixation of 1 ...
0
votes
1answer
44 views

How does the helicase enzyme break the hydrogen bonds between the strands of DNA?

I know helicase breaks the hydrogen bonds between the strands of a DNA, but how is this done? Does it put an ion between the strands of the nucleic acid so that the bond breaks apart itself or is ...
-3
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0answers
29 views

Paramecium multiplication…which one is the copy

Sorry for very trivial question.When a parametium makes its copy by mythosis have scientist figured out which one is the original and which is the copy?Something like labeling them with different ...
3
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0answers
28 views

Help me identify this Bug species

I found this insect in Pune/India. Its body size was less than 1 cm. It was near light source. I suspected it to be Juvenile Thread-legged Bug, but i am not sure. Is my suspicion right or is it some ...
1
vote
1answer
33 views

Are there any benefits/disadvantages/traits from having a permanent lower core temperature?

My body temperature as far as I remember has always been around 35.6 degrees Celsius, that's a degree less than what is the usually quoted as the average temperature for humans. Are there any known ...
-1
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0answers
34 views

What are the different advantages of the specific bone structure in bird legs?

https://etc.usf.edu/clipart/72500/72509/72509_brdhindlimb.htm Looking at the structure of birds I notice there are a few specific patterns to the portions of bones. One is a short femur, a long ...
-1
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0answers
18 views

Is gluconeogenesis exothermic and is it exogenic?

Glycolysis is exothermic, but a lot of energy is released as heat. Can gluconeogenesis bypass the heat absorption and be exogenic or exothermic?
3
votes
1answer
65 views

Example of a virus becoming symbiotic with an organism

The human gut has an indispensably beneficial ecosystem of bacteria. What are the examples of a virus that becomes symbiotic with an organism, or even incorporates beneficially into the genome of the ...
2
votes
1answer
28 views

Speed of reaction vs equilibrium

Does increasing the speed of a reaction (say by introducing a catalyst) shift the equilibrium of the reaction? I assume it does not, as Gibbs free energy is not changed, but I am not sure.
0
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0answers
13 views

A question about how the brain determines the source of a sound

If a person's eardrum vibrates, let's say, 440 times per second for 1 second, how does the brain know its because 1 sound source vibrated 440 times, as opposed to 440 sources vibrating once, one after ...
0
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1answer
20 views

What does “radiographic progression” mean in cancer?

I tried looking up the definition of the term "radiographic progression" using Google and medical dictionary, etc., but I couldn't find its meaning anywhere. All research articles that I found just ...
2
votes
1answer
35 views

Do there exist enzymes that can take up multiple cofactors to do different reactions?

I was thinking about enzyme catalysis, and it seems like enzymes can only catalyse one kind of forward/reverse reaction (please correct me if I am wrong). Does there exist an enzyme that can catalyse ...
-4
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0answers
24 views

biology question [on hold]

It’s around lunchtime and you are feeling hungry, so you eat a sandwich. When the food passes through your stomach and into your small intestine during digestion, your brain receives a signal causing ...
7
votes
1answer
3k views

Strength of Female Chimpanzees vs. Male Chimpanzees?

Where can I find studies done on the strength dimorphism between male chimps and female chimps? For example, "one-arm pull strength is 300 pounds for male chimps and 200 pounds for female chimps"
0
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0answers
31 views

Does intelligence depend more on environment than on genetic factors? [duplicate]

Many have argued that the test of IQ is simply a test of language. The application of the test consists of asking a number of questions. The person should understand the question presented to them and ...
0
votes
0answers
20 views

Person-years and relevance to incidence of condition

If the annual incidence (age and sex-adjusted) of a particular condition x is 21.8 cases per 100,000 person-years and this data was determined in one geographic location, then is it correct to say in ...
0
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0answers
42 views

Can foraging worker ants become queens?

The TL;DR is in the subject line. The back story is as follows. I am combatting ants in my highrise apartment unit. One piece of online advice was to vacuum regularly, and pay attention to edges of ...
3
votes
1answer
30 views

Why does mold grow on silicone caulk?

I notice mold likes to grow on silicone caulk. I find it odd since silicone is mostly inorganic and doesn't contain any nutrients for mold to grow on unlike soil and clothing. Can mold metabolize ...
2
votes
0answers
30 views

Medical terminology for asymmetrically-shaped paired body parts?

Some people have different sized feet [source], a limb that is slightly longer than the contralateral (on other side of the body) limb [source], or other instances of paired body parts being different ...
0
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0answers
40 views

Is there any evidence that genes which are associated with physically adjacent structures are located near each other within the genome?

I am not sure if there are individual genes for, say, fingers and if so, would such genes be near the genes that affect hand growth? If not "near" in the Euclidean sense, could there be a different ...
0
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0answers
39 views

Why are human mothers told to “push” out a baby?

I've always wondered why human mothers are instructed to "push" when giving birth. Every other animal just gives birth of it's own accord. Albeit perhaps from a different position with the help of ...
0
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0answers
8 views

Why are some specific names / items harder to remember [migrated]

I will take an example specific to myself to illustrate: Having a very solid music culture and a quite good one about movies, a few cues usually help me remember the works in question. Sometimes I ...

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