0
votes
0answers
2 views

how to see prefrontal cortex works normally by a test?

Is there a test to see if the Prefrontal cortex of someone works normally? especially a simple test like a questionnaire that you give the individuals to fill out and based on their answer you obtain ...
0
votes
0answers
8 views

Sexing fish from a tissue sample

How can you tell the gender of a fish from a tissue or blood sample and what equipment do you need (how much magnification in a microscope)?
0
votes
1answer
19 views

What causes swelling after impact?

Why does the head swell after getting hit by something hard? What is the liquid that forms after impact?
0
votes
0answers
4 views

Energy efficiency of carbohydrate > fat conversion

How efficient is the human body in converting surplus carbohydrate into fat? E.g., if you have 100 calories' worth of carbohydrates at the start of the process, how many calories' worth of fat will ...
0
votes
0answers
9 views

amount of tRNA and its extra arm

How much of the total RNAs is tRNA? Some say 15% and some 20%. Which is correct? And what are the functions of the extra arm (variable loop) of tRNA?
0
votes
0answers
15 views

Lifeforms concentrations of the categories of macromolecules, and Lipids

Lifeforms are formed of large, modular, organic molecules called macromolecules, large organic molecules called Lipids, and simpler molecules such as H2O. Macromolecules are commonly grouped into the ...
1
vote
2answers
18 views

Can DNA be denatured at acidic pH?

Some say that DNA is denatured only at basic pH. And some say at both acidic and basic pH. So I want to know clearly why and how if DNA is also denatured by basic pH.
0
votes
0answers
15 views

dihedral angles [migrated]

My guide asked me to measure the dihedral angles of a poly-peptide chain.There are 4 atoms in between two planer surface(2 atoms in each plane).(refer dihedral angles wikipedia) There is a formula for ...
3
votes
1answer
49 views

Distinguishing Father from Brother

Given the (non-identical) DNA sequences of two men and the knowledge that the second man is either the father, brother, or son of the first man, is the DNA useful in determining which of these three ...
1
vote
1answer
16 views

What separates gene loci?

Introns are sections of noncoding DNA that separate exons within a gene locus. However, between different gene loci, I also would assume there to be noncoding regions of DNA. What are these regions ...
1
vote
1answer
19 views

Crossing over and exon shuffling?

Campbell Biology 10e, in discussing the functions of introns, writes: The presence of introns in a gene may facilitate the evolution of new and potentially beneficial proteins as a result of a ...
2
votes
2answers
1k views

Are these lovebugs?

I used to see these insects frequently in Chennai and Bangalore (South India). I just would like to know if this is a kind of lovebug. The lovebug as mentioned in the Wikipedia page is, however, ...
0
votes
0answers
9 views

What are the most currently effective ways of delivering material to the body, and housing it in the body?

My question is about the most effective ways that currently exist (or some of them) for both delivering foreign material inside the body, and keeping it safe from the immune system. For an example of ...
0
votes
0answers
10 views

What are some examples of non-amphipathic membrane lipids? [on hold]

Thanks for taking the time to answer my question.
1
vote
1answer
11 views

Anemiaceae etymology

What is the etymology of the name Anemiaceae for a family of ferns? I assume that it's from the name Anemia for one of its genera, but that is equally mysterious. Obviously it has no blood, but what ...
0
votes
0answers
18 views

Hormones of a 5 year old girl

What kind of hormonal changes do 5 year old girls experience? Also how can they change the behavior?
1
vote
0answers
11 views

How should one interpret heritability? Is it related to $R^2$?

From Wiki: Heritability estimates are often misinterpreted if it is not understood that they refer to the proportion of variation between individuals on a trait that is due to genetic factors. It ...
-2
votes
0answers
23 views

Is it true that the water in coconut reduces the effect of drug taken in the body [on hold]

I'm not actually sure of this, but I was told by a colleague of mine, and I thought of getting other comments about this to learn more about the effect of coconut water or juice
0
votes
1answer
19 views

Countercurrent multiplier mechanism

How exactly does the countercurrent multiplier mechanism work in formation of urine in the body? I am unable to find a satisfactory answer to this.
1
vote
0answers
11 views

Wax layer destruction from seed coats

I'm working with some orchid species, and i encounter a specific issue. Some of those species deposits upon their seed coat a wax layer. This layer makes seeds behave in a very hydrophobic way. You ...
9
votes
7answers
2k views

Why can't we see in low light if staring long enough?

For me it seems reasonable that if I kept my gaze on a fixed point in a room with low light, a progressively brighter and better picture would appear before my eyes, just like a camera can see in the ...
0
votes
1answer
18 views

Energy input during ATP Dephosphorylation?

What is the energy input needed to break the phosphor bond during ATP Dephosphorylation? How and when this will occur? Many thanks for your answers. Edit 1: I know how much free energy (∆G) is ...
0
votes
2answers
67 views

Why did multicellular organisms develop when a single cell can survive on its own?

Since unicellular organisms can survive, why would there be development of multicellular organisms?
0
votes
1answer
27 views

Why did eukaryotic cells develop? [on hold]

If eukaryotic cells can survive in extreme conditions, then why are their still prokaryotic organisms?
1
vote
0answers
16 views

Did the number of rods changed from ancient time?

Correct me if I am wrong, but I know that rods work under limited light conditions only. But now we are in a world that always have lights everywhere unlike ancient time when humans had to deal with ...
0
votes
0answers
3 views

Steps between Expression & Commercialization of a recombinant organism

What are typical steps that follow after one has successfully expressed a hetrologous gene in a host organism before one has a viable industrial process for the metabolite expressed? Let's take E ...
0
votes
0answers
8 views

Glycoprotein hormones metabolism

Why do the carbohydrate groups in glycoprotein hormones decrease the rate of metabolism? And increase the half-life?
0
votes
0answers
6 views

Orangutan Nests - Necessary To Teach Offspring ?

" Young orangutans learn by observing their mother's nest-building behaviour. Nest-building is a leading reason for young orangutans leaving their mother for the first time. " ...
4
votes
0answers
51 views

What causes humans to be physically weak compared to animals like gorillas?

Animals like gorillas seem to have a physical fitness and muscle mass that don't depend as strongly on how much exercise they get, compared to humans. E.g. gorillas living in the wild sleep and rest a ...
0
votes
0answers
22 views

Can you feel what's happening in your brain? [on hold]

There are specific instances in which I feel areas of my brain. I assumed I was making it up because "the brain doesn't have any pain receptors" but recently thought of headaches, and looked online to ...
0
votes
0answers
6 views

Separate replication origin and terminus vs making them one and the same

The classical picture of bacterial reproduction has a replication origin on one side of the circular chromosome and a replication termination area on the opposite end. This essentially creates two ...
0
votes
1answer
15 views

The question of the protein and the ribosome

It is well known that proteins are spit out by ribosomes by reading the DNA that goes in. Now ribosomes are made of proteins. Doesn´t this mean that the riobosome structure came before the production ...
3
votes
1answer
50 views

Could a single cell be brought to life?

If a scientist is observing a single cell under a microscope, and then realizes that the cell has died, is it possible to bring that dead cell back to life? For my inquiry, let's assume that the ...
0
votes
1answer
21 views

Difference between the spinal cord and vertebrae column [on hold]

What is the difference between the spinal cord and the vertebrae column, they both run through from the head to the abdomen. Does any one have any idea.
0
votes
2answers
16 views

How does hypocalcaemia have an effect on the excitability of cell

Hypocalcemia increases sodium influx by leak channels. Why does this elevate the resting membrane potential and increase excitability?
0
votes
1answer
21 views

Why doesn't one develop immunity to bacterial STIs?

Why doesn't one develop immunity to STIs such as Chlamydia/Gonorrhea and Syphilis even after the first exposure and treatment with antibiotics?
6
votes
3answers
378 views

What happens if a non-diabetic receives an injection of insulin?

If a person without diabetes or any diabetes-related issues receives an injection of insulin, what happens? Would the blood glucose level drop or does the body naturally compensate for the added ...
2
votes
1answer
54 views

what DNA you pass on to offsprings?

Our body contains many different types of cells and each of those cells have their own DNA (correct me if wrong) like skin cells their own DNA that makes them skin cells instead of muscle cells. So ...
0
votes
1answer
16 views

Where does the lactate produced by tumors go?

Tumors are known to burn glucose and secrete lactate (this is known as the Warburg effect). Where does this lactate go? Does it steadily accumulate in the neighborhood of the tumor? This doesn't ...
1
vote
0answers
20 views

How can I estimate the CO₂ uptake of a plant?

I would like to make an estimation of the CO2 uptake of plants I cultivate, including, lettuce and aromatic herbs, such as thyme, basil, rosemary. What I want is to end up with a rough indicator for ...
1
vote
0answers
9 views

What is the difference between chloride shift and Bohr shift?

Does anyone know the difference between chloride shift and Bohr shift? Is it that Bohr shift happens in respiring tissues when CO2 concentration is low, and that Chloride shift happens in the blood ...
0
votes
0answers
6 views

In what sense does lichen 'eat around itself'?

Source: pp 31-32, Lichen Secondary Metabolites: Bioactive Properties and Pharmaceutical Potential, edited by Branislav Ranković Lichens are used for many different medicinal purposes, but there ...
-2
votes
0answers
56 views

Proportion of Mass? [on hold]

As part of resubmission of another question about molecular biology, I'm describing the proportions of types of material that a creature is made of, compared to the whole creature. For example, a ...
0
votes
0answers
17 views

how to find no of annotations of a specific chromosome (say chr10 that is in the chromosome's column)in a tab delimited file in linux [on hold]

for example my first line of the file when i filter the data using grep is as below. there are multiple entries of chr10 in the third column . How do i count the number of annotations of chromosome 10 ...
1
vote
0answers
24 views

Capture recapture for only two visit assuming a open population model

I have a study system where I’m doing a capture recapture analysis. I mark fish in one year and I’m recapturing a subset of them the next year. I only have 2 capture events. Since a lot of time has ...
0
votes
0answers
16 views

Respiratory System [on hold]

How do chemoreceptor cells regulate respiration? Check all that apply a.Chemoreceptors are found in the aorta. b.Chemoreceptors are found in the brainstem. c.Chemoreceptors are found in the carotid ...
2
votes
2answers
114 views

How long do viruses, such as Zika, stay in the body?

Can a virus stay in your body (after recovery) in a concentration that is sufficient to infect someone? Is it known how long the Zika virus persists in the body?
3
votes
0answers
29 views

How to solve the problem of 2 melt peaks in real time PCR?

I am facing a problem in my real time experiment. After standardizing the annealing temperature by semi-quantitative PCR, I did real time for my gene of interest. In one of my samples, I got 2 peaks ...
0
votes
1answer
41 views

Solving a Pedigree Between Heterozygous Half-Cousins

A man who is a known heterozygous carrier of oculocutaneous albinism marries his half-cousin (they share one common grandparent) as shown in the pedigree below. This trait is transmitted as a fully ...
1
vote
1answer
21 views

A limit to birds affinity for high vantage points [on hold]

Birds seem to have a natural affinity for high vantage points, including power wires, the tops of trees, and the sides and tops of buildings. However I presume the top of the Burj Khalifa is not ...

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