2
votes
1answer
44 views

Is there a significant difference in sedentary calorie-burn between a thinker and non-thinker?

I've read that, on average, a sedentary female burns between 1,600 - 2,000 calories and a sedentary male burns between 2,000 and 2,500 calories. I've also read that the brain itself burns quite a few ...
1
vote
0answers
11 views

Is there any simple&safe experiment to demonstrate and/or measure neuroplasticity?

As far as I know, neuroplasticity is about restoring brain functions by moving some functions to other nondamaged areas. Neuroplasticity is more prominent in children than in adults. What are other, ...
0
votes
0answers
4 views

Is there a formula for determining the % of ligand bound to a given receptor in a mixture with multiple ligands and receptors?

When a ligand and receptor interact with a given kd, one can easily determine % of ligand bound to the receptor when the kd, total concentration of ligand, and total concentration of receptor are ...
2
votes
1answer
9 views

Why are killer whales found in the Gulf of Mexico smaller than ones found in the Pacific?

I recently found out that there are killer whales that live in the Gulf of Mexico, but they are smaller than killer whales that are commonly found in the Pacific Ocean. Why is it they are smaller in ...
3
votes
0answers
19 views

Why is living muscle tissue seemingly able to restore its shape under force, while dead tissue is not?

When I press my finger, even with relatively little force, into beef or chicken (say, at a grocery store), the indentation remains (and I get yelled at by employees). When I hit beef with a ...
1
vote
0answers
8 views

How can I see that the human hand has 27 degrees of freedom?

I have counted the degrees of freedom in my hand over and over and I keep getting the number 19. Suppose each finger has 3 degrees of freedom. Then 5 * 3 = 15. The wrist can rotate around or back and ...
0
votes
0answers
34 views

Why do I see dreams upon closing my eyes? [on hold]

I know it is widely accepted that dreams happen during the REM period of sleep, which occures after some considerable time from going asleep. Thus my question is: why am I seeing dreams, should I just ...
1
vote
0answers
14 views

Primal posture - scam or reality?

Recently while watching some TED talks I came across this one by Esther Gokhale (as I found out later, she has B.S. from Harvard and Princeton). The main idea of the talk is that the posture our ...
1
vote
1answer
18 views

Evolution theory - roses spikes - being more bulgy doesn't give you advantage

I've seen spike, huge spike. And I thought that development of such spikes could be contrary to the evolution theory. Being „little more” spiky doesn’t give you any advantage... So those ...
3
votes
1answer
29 views

Are nucleic acids found in cell membranes?

I've found various results online and I was recently marked in on an important test as wrong when I made the assumption they were not found in the cell membrane. Does anyone know what the correct ...
4
votes
0answers
20 views

Expected time for a neutral allele to reach a frequency of $p_1$ when starting at frequency $p_0$

Kimura and Ohta (1968) show that the expected time for a neutral allele to reach fixation (given that it will reach fixation) is $$\bar t(p_0)=-4N\left(\frac{1-p_0}{p_0}\right)ln(1-p_0)$$ , where ...
1
vote
2answers
61 views

What is the effect of persistent hypothermia on cardiac performance?

I define persistent hypothermia in this thread about the mechanisms of persistent hypothermia. The Graph of Katzung et al. in Pharmacology about Heart Failure: I am thinking which parts here are ...
3
votes
1answer
22 views

Safe parameters for external nerve stimulation using electrical impulses

Introduction I've recently stumbled upon David Eagleman's TED talk on the concept of sensory substitution and addition. Being the most inspiring thing I've seen on the internet for the last few ...
3
votes
1answer
82 views

Can bacterial RNA be degraded at -80⁰C in a SDS solution?

I would like to know if bacterial RNA in a 1.5 mL 2%SDS solution can be degraded. Comes from a pellet of pure liquid culture. Thanks
0
votes
1answer
35 views

How does the body respond to blood donation; are there any possible risks?

Can blood donation cause any harm to the donor? I have been told so, but cannot find any references supporting this claim. I have also learned that our body will replace the lost fluids within 24 ...
2
votes
0answers
31 views

Splice in with CRISPR/Cas

I need to splice a gene into a human cell genome, with highest rate possible. I mean, doesn't really matter where the gene enters, nor does it matter if some cells die as a result of this. CRISPR ...
0
votes
1answer
24 views

What would happen if we had a device that produced oxygen inside of our lungs? [on hold]

Hypothetically speaking, suppose there is a device that produces a limitless supply of oxygen. The device is inhaled by a human and is resting inside the (a) lung. What would hypothetically happen if ...
0
votes
1answer
20 views

Creatinine Lab Test

Should a Creatinine lab test result (run on a random urine sample, not a 24 hour collection) have a correction for a person's body weight/BMI?
1
vote
1answer
19 views

Why does allele linkage cause disproportionate phenotypic ratios?

I was learning about allele linkage in Biology class and I got confused by the resultant phenotypic ratios. Say you have a dihybrid cross BbGg x BbGg. The Punnett square would look like the ...
2
votes
1answer
22 views

Cysticercoids of Eucestoda

I have found the following pictures representing cysticercoids of Eucestoda. If I correctly understand the right part of the picture, I would say that the development of the scolex is portrayed on ...
6
votes
1answer
61 views

Should we induce fever to assist healing?

I am currently reading "The Fundamentals of Anatomy Physiology" 10th edition, and have found it an incredibly interesting book. I have just been reading about the lymphatic system, and the various ...
3
votes
1answer
34 views

Why proteins are not visible on my membrane after ponceau staining?

I have a problem in western blot that I can't resolve by myself. When I am use to add 100 microgram of proteins for each sample but after running and transfer its impossible to me to see bands of ...
2
votes
3answers
61 views

how to increase shelf life of yogurt without refrigeration..?

when we make yogurt at home and do not refrigerate it, it will become sour because of conversion of lactose into lactic acid by Lactobacillus bacteria, but this does not happen in case of Nestle's ...
9
votes
1answer
77 views

Non-harmful bacterial invasion of cells

There are bacteria that can enter body cells as parasites. Could it be that some of these are benign, such that the guest will not kill the host cell it lives in (especially in human)?
3
votes
2answers
35 views

Relative microRNA comparison from from TCGA data?

I have a conceptual question that I was hoping someone could answer. Can I say that microRNA A is expressed x-fold greater than microRNA B directly from the TCGA miRseq data? Can I do this after ...
2
votes
3answers
59 views

Can bioluminescence be used for cancer or tumor detection? [on hold]

What diagnostic applications, if any, are there in using bioluminescence to detect cancer or tumors (in vivo)?
-1
votes
0answers
8 views

R Tool and analysis of Gene Expression data from NCBI GEO datasets [migrated]

When i execute this code in "R" i het answers for this gset <- getGEO("GSE51808", GSEMatrix =TRUE) if (length(gset) > 1) idx <- grep("GPL6244", attr(gset, "names")) else idx <- 1 gset <- ...
6
votes
0answers
40 views

Why polyploidy gives an evolutionary advantage?

I would like to know what advantages polyploidy holds. I have come across a few examples during my research of polyploidy, for example human adults' hearts contain 27% diploid, 71% tetraploid and 2% ...
3
votes
1answer
21 views

Are there any disadvantages to HRP conjugated PRIMARY antibodies

I need to detect a FLAG tagged protein on a western blot and have to order an antibody. I'm not expecting to see a massive amount of my protein. To keep analysis time to a minimum I am considering a ...
1
vote
0answers
12 views

Can I use my extech pH60 meter to measure soil pH if so how? I included a link to the meter [on hold]

Can I use my extech pH60 meter to measure soil pH if so how? I included a link to the meter. Extech pH 60
4
votes
2answers
364 views

How can CI repressor both activate and repress $P_{RM}$ promoter found in $\lambda$ phage?

I'm reading a paper where the authors constructed a toggle switch that uses bidirectional $P_R/P_{RM}$ promoter found in the $\lambda$ phage. There are 3 binding sites - $O_{R1}$, $O_{R2}$, $O_{R3}$ - ...
3
votes
1answer
28 views

Why don't all bacteria have F-plasmids by now?

Some bacteria can undergo gene transfer by conjugation. Conjugation is a form of horizontal gene transfer, meaning from one (unrelated) bacterium to another (in contrast to vertical gene transfer, ...
3
votes
3answers
159 views

Do animals also dream?

By "dream", I mean: Dreaming while sleeping. Dreaming about their future life while being awake. Thank you in advance.
3
votes
1answer
107 views

Structure of RAP Antibodies (Specifically RAP-5)

[EDIT] - Have just found not one but two papers that address my structure problem. However they concern RAP-1A, so I guess my question is now what is the difference in structure and function of ...
3
votes
1answer
37 views

Simplified molecular-input line-entry system

This may be a bit abrupt/vague question, but I didn't know how to proceed the search to get the answer. What are the properties of a 3D biomolecule which gets ignored when a 3D biomolecule is ...
4
votes
1answer
209 views

Is greed an evolved trait?

I am not a biologist, but I am fascinated by evolution. I was watching the news this morning and, as so often is the case, there was a news story about a corrupt politician who was accepting ...
3
votes
3answers
45 views

Any good website/book to understand protein folding and enzymes?

I'm looking for a good, understandable and simple explanation about protein folding, mechanisms and function, and their relationship with enzymes. I understand that the protein is a polypeptidic ...
5
votes
1answer
19 views

Behavioral change in dolphins during different hemispheres activity periods?

It is known that dolphins never sleep in the sense that we do, instead they have one hemisphere of the brain sleeping while the other one is awake. I wonder, do they show observable changes in ...
3
votes
1answer
47 views

Proving time travel

Consider this answer to an interesting question. It's not possible to prove completely that someone is the descendant of someone else, there's always a nonzero probability that the results are a ...
0
votes
0answers
9 views

Understanding conclusions of the fact that functional regions of genes are under negative selection?

I am reading in notes for a comparative annotation lecture that : "Fact 1" : all DNA is subject to mutations "Fact 2: most functional regions are under negative selection(ie., mutations are often ...
5
votes
1answer
67 views

Are some facial features more important than others in human facial recognition?

I'm often surprised by the human ability to correctly identify other individuals despite significant modifications due to ageing, hairstyle, injury, etc. But, sometimes the addition of a beard and a ...
18
votes
3answers
2k views

Is there any use of CO₂ in human body?

We all know CO₂ as a waste product of metabolism . Does CO₂ have any helpful role , apart from having a role in pH of blood ?
7
votes
1answer
243 views

Cytoplasmic determinants - protostomes and deuterostomes

Cytoplasmic determinants are spread unevenly in the egg, and so when embryo starts forming (cells start dividing), the determinants are also unequally divided between cell. This unequal distribution ...
3
votes
0answers
20 views

Will a store bought cabbage kill my Pieris brassicaes?

About 4 days ago I found a large amount of caterpillars (Pieris brassicae) in my radishes, I took them aside for seeing how they grow and I am out of radishes to give them. I bought a cabbage in the ...
0
votes
0answers
36 views

Why can't we remember something sometimes? [on hold]

We've all had something a time where we "learned" something for school and then forgot it the next day. However, we remember something that happened 3 years ago. Why is our short term memory ...
2
votes
1answer
47 views

Energy metabolism in Cancer cells

The TCA cycle intermediate Isocitrate dehydrogenase commonly undergoes point mutations in cancers. This allows IDH to reduce a-Ketogluterate to 2Hydoxygluterate, causing a reduction in pVHLs ability ...
1
vote
1answer
35 views

Why is it important to study chromatin to understand cancer?

Many labs and many projects in biology institutes and university departments have been starting to study chromatin. Chromatin states, chromatin interactions, chromatin loopings, chromatin behaviours, ...
0
votes
2answers
63 views

Horns in animals and birds [on hold]

Are there any carnivores with horns (whether extinct or currently alive)? Do any flying creatures have horns? By horns I mean horn like structure.
3
votes
0answers
15 views

How to quantify the Abundance of a particular gene in Bacteria and Archaea?

For 16s rDNA metagenomic analysis, do I need to do the following steps? DNA extraction-> Purification-> PCR amplification-> Clone -> Pick every single colony-> PCR amplify -> Sequence -> ...

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