0
votes
0answers
2 views

The Ancient Kingdom of Monera

Why exactly were bacteria and archaea kingdoms separated from the now unused kingdom of Monera? Aren't they the same? They are both prokaryotes, so what is the difference?
2
votes
0answers
13 views

How can E. coli proliferate so rapidly?

The E. coli has a genome with approximately $ 5\cdot 10^6 $ bp. The main DNA polymerase involved in its chromosome duplication (DNA pol III , the one with highest processivity) can polymerize ~$10^3$ ...
1
vote
1answer
8 views

Are there multiple meanings to “clone” as in “clone a gene”?

I originally thought that cloning a gene meant to put it into bacteria and have them express it. But sometimes I see it used and it seems like it's just a synonym for "identify the sequence and/or ...
-1
votes
0answers
15 views

Is there any truth to at-will pregnancy rejection?

First and foremost, if you feel intense anger that this question is being asked, I share your anger. The fact is, I just don't know. But I've seen this alleged phenomena used in discussions ...
0
votes
0answers
11 views

Why proteins are building blocks of life? [on hold]

I like to think that normally C and H are oxidized in the nature. Yet, plants, using sun energy, break the oxigen away and build carbohydrates, like sugar/glucose. Basically, any plant is just bunch ...
3
votes
2answers
127 views

Are all dinosaur bones radioactive?

I watching some TV program some time ago and a guy in it mentioned that when-ever museums display real dinosaur bones (as opposed to a replica) the bones are painted over with a lead paint, because ...
3
votes
1answer
13 views

Can virus resistance be acquired through generational exposure?

If I have a squash plant that has a mosaic virus of some kind, and I breed its descendants (via seed) for generations, each with exposure to the same virus, will future generations be likely to ...
2
votes
0answers
20 views

How to tell if a beverage will hydrate or dehydrate?

Beverages of any type generally contain some measure of water. However, in the case of some liquids, the non-water components take more water from the human body to filter out than the water contained ...
0
votes
0answers
16 views

What is considered to be human? [on hold]

Perhaps this isnt the correct forum but ill try none the less. I have two parts to this: 1- What is Human? I struggle to grasp this concept, we are a species but what seperates us from the likes of ...
0
votes
0answers
19 views

What is the probe that absorbs at 450nm in the presence of NADH in this assay?

The colorimetric assays by Biovision and Sigma Aldrich seem to utilise a probe that binds to or reacts with NADH in order to cause absorbance at 450nm which can then be quantified by a ...
2
votes
1answer
24 views

Why do haemophillic females $X^hX^h$ die before birth?

I just came across a statement in my book , while reading genetics, that haemophiliac females do not survive till birth (the reason not mentioned here why) . Before posting this question here I ...
0
votes
0answers
14 views

What is serological profiling

I read an abstract, but couldn't understand many things. These are the follows: 1. What does serological profiling mean? 2. What does stage specific responses mean? 3. "The antibody response from the ...
0
votes
0answers
27 views

How do I identify the protein with the highest Disulfide bond density? i.e protein with highest ratio of Disulphide bonds per Peptide bond?

I want to list all proteins in the protein database and list them by the ratio of number of disulphide bonds per peptide bond. I am not particular about the reliability of identification of ...
-4
votes
0answers
18 views

What are the contribution of Greek in modern Biology? [on hold]

modern Biology which had their origin in Greek
-2
votes
0answers
13 views

Relation between double helix CGTA and dominant / recessive genes [on hold]

How could I understand the relation BB ~ 25%, Bb ~ 50%, bb ~ 25% of being bald versus CGTA? What has one thing to do with the other?
0
votes
1answer
9 views

Primer design for HLA locus

i have designed primers for HLA locus DPA1(exon 2 region) based on Real-Time PCR (qPCR) Primer Design guidelines. primer will start from intron regions to cover full exonic region. ...
1
vote
0answers
35 views

Nutritious protein substance for vitamin enhanced crop?

I am not a bio or science major, but we have a subject, like an elective on biotechnology and we were tasked to think of a product that hasn't been invented yet. My groupmates and I thought of a ...
-1
votes
0answers
20 views

Does mitosis only create somatic cells? Doesn't it also create germ cells? [on hold]

If mitosis doesn't create germ cells, then where do the germ cells that undergo meiosis come from?
1
vote
3answers
21 views

What is the basic structure of the nuclear lamina

What gives the nucleus its shape is a mesh of intermediate filaments called the nuclear lamina. It forms an interface between the chromosomes and the inside of the nuclear envelope. If these ...
1
vote
1answer
21 views

How would i describe a Cladogram as paragraph? [on hold]

I have this paragraph that i have halfway finished, but i do not know what to put in the spaces. A Cladogram is a branching diagram that represents the proposed phylogeny or evolution of a species ...
3
votes
0answers
30 views

How we share pain?

When somebody else tells me about his or her itching or pain in some specific body part I sometimes begin to feel similar feelings. I can think of about three explanations: I feel pain all over my ...
4
votes
1answer
191 views

Why AZT is selective towards HIV and doesn't impair human DNA replication?

I've found this article, which is a very old one (from the time when nucleoside analogs where researched as a possible way to prevent replication of virus genetic material, before the HIV epidemics). ...
4
votes
1answer
33 views

Do cell membranes have more phospholipids in one layer than in the other?

Assuming the cell membrane to have a spherical shape, geometry tells us that the area of the inner leaflet is smaller than the area of the outer due to the difference in radius between them. Does this ...
2
votes
1answer
10 views

Are the proteolytic enzymes in syconiums and nettles identical to those in rennet?

I would like to compare rennet capability under various conditions. The issue is, I don't want to use calf rennet, but I can't figure out if nettle and syconium, which also coagulate milk, contain ...
0
votes
0answers
15 views

Standard solution for alkaloid separation in HPLC [on hold]

In the middle of my college project, I am in need of performing alkaloids separation from Aloe-vera using HPLC. Can anyone help me by mentioning the standard solution to be used for this separation?
0
votes
0answers
16 views

Show the relationship between genes when we have a proof crossing and types are given [on hold]

At the tomato A- round fruit, a- long fruit, B- smooth fruit, b- creasy fruit. In a proof crossing we have these types: 24 individuals Ab, 266 AB, 246 aB, 24 ab. Show the relationship between genes. ...
1
vote
1answer
36 views

Why sigmoid curves appear in quantitative analysis of many biological phenomena? [on hold]

I know two examples: 1-The binding of hemoglobin to oxygen (binding of oxygen to one site of hemoglobin induces conformational changes which increase the affinity of the other sites for oxygen - the ...
-3
votes
0answers
27 views

I am a biology student and m confused about my future after intermediate now m seeking a profession beyond medical line [on hold]

I want to know all the career options associated with biologystudent except medical professions ......Plz provide the best options...... Scope Benefits Demand Earning
-3
votes
1answer
44 views

Why do humans need a heart? [on hold]

When I looked up the function of the heart, it says the heart pumps blood throughout the body. But the blood is already throughout the body, as it is recycled back to the heart. It is a chick-egg ...
1
vote
4answers
49 views

Why are there both stop and start codons?

Based on my understanding from wikipedia, there is the (RNA) start codon AUG and the stop codons UAA, UGA, UAG. AUG can also encode Methionine, I'm assuming if it appears in the middle of a mRNA ...
0
votes
1answer
16 views

Two heterozygote mice for skin color are reproduced. Find the probability that in 3 children 2 will be dark and one white

Two heterozygote mice for skin color are reproduced. Black is dominant to white color. Find the probability that in 3 children 2 will be dark and one white. How did you do the ordering. Well I found ...
0
votes
1answer
23 views

interpreting enhancer and promoter regions of a target gene

I am reading a paper which talks about promoter/enhancer regions of certain protein coding genes. These genes are for which evidence points to having strong MEF2 transcription factor binding sites. ...
0
votes
0answers
10 views

is Acinetobacter spp produce biofilm [on hold]

Is Acinetobacter spp. produce biofilm ? And what the basic properties of this bacteria like biochemical test?And some literature about Acinetobacter.
1
vote
0answers
25 views

how food moves in horizontal coils of small intestines [duplicate]

This is a very very basic question, and I am looking at it more from point of view of physics. The small intestine is a highly coiled structure, which means it has horizontal coils as well. I can ...
1
vote
0answers
8 views

Plants and animals ability to survive polypoidy conditions [duplicate]

In mammals the condition polyploidy produce something euphemistically termed "general developmental disruption" ,practically speaking this means system meltdown which happens very quickly. There is ...
2
votes
0answers
18 views

Protein-Bound Drugs in Kwashiorkor

Kwashiorkor is characterised by decreased serum protein (including serum albumin) due to poor dietary protein intake. What is the effect of this lowered serum protein on highly-protein-bound drugs? ...
-1
votes
0answers
20 views

Variables of an Experiment? [on hold]

So the experiment that i did was using a dialysis tubing as a model cell to test the process of osmosis. The IV is the amount of sucrose concentration put into the dialysis tubing. The tubing is then ...
0
votes
1answer
44 views

if the load is removed from an eccentrically contracting muscle, will it start contracting concentrically?

Geometrically speaking, a muscle contraction should exert a force between the two attachment sites. However, the actual effect of the force on the overall geometry of the body near the point of ...
0
votes
0answers
15 views

Multivariate Generalized Linear Mixed Model [on hold]

I'm trying to run a multivariate generalized linear mixed model on a data set. I have 4 response variables, 3 fixed factors, a covariate and a random factor. SPSS can't do the analysis. I've tried ...
13
votes
3answers
679 views

Are there cats with black skin?

Some mammals can have a black, pink or spotted skin, depending on race - see for example humans or pigs. But I recently learned that this is not the case with mice. Even black furred mice have pink ...
1
vote
1answer
53 views

How are 23 chromosomes in human sperm chosen?

I'm not biologist and I have just a basic knowledge. I've been thinking for a long time about the following question: How does the body choose which 23 chromosomes should be active in human sperm and ...
3
votes
2answers
28 views

Biochemical coupling between two enzymatic reactions - Enzymes physically associated?

I am wondering what the exact definition of biochemical coupling between two enzymatic reactions is. I know that these two enzymatic reactions have to share the same intermediate(s) one is ...
2
votes
0answers
32 views

How can TMS induce enough depolarization to cause an action potential?

Creating an action potential needs at least tens of mV potential difference across the membrane to occur. But the membrane is really thin, surely less then 0.01µm (some reference give 25A). Then the ...
4
votes
1answer
48 views

What (open) software there are for simulating behaviour of human (cortical) neurons?

Is there any reliable open-source software for simulating the behaviour of human cortical neurons? I am looking for serious software, so let's assume I have access to a computer with more than 10,000 ...
1
vote
0answers
16 views

How do I use BEAST for divergence time estimation in this case?

I am interested in using BEAST to find the divergence time estimates of species separations within a genus of frogs. The genus separated from a outgroup taxon I have chosen around 80 million years ...
3
votes
1answer
52 views

Survival of streptococcus after my scarlet fever

I'm currently sick because of scarlet fever but I got treated with antibiotics. I know that after 1.5 day using antibiotics the streptococci I release at home are dangerous anymore. But my question ...
1
vote
0answers
11 views

What is the chemical makeup of mealworm frass?

We have been raising mealworms for some time and while mealworm frass has proven very useful as a plant fertilizer, I started wondering about other potential uses of this leftover waste. Can someone ...
0
votes
0answers
14 views

What are the forms of host pathogen interaction [on hold]

What are the forms of host pathogen interaction apart from the host pathogen protein protein interaction?? Or is protein protein interface is the only one way of host pathogen interaction?? I am ...
1
vote
0answers
72 views

White/Gold vs Blue/Black dress [on hold]

So I'm sure you've all seen the dress photo where people see the dress as either White and Gold or Blue and Black. It has essentially 'split' the internet because some people see the dress and they ...
0
votes
1answer
16 views

What is the role of Aspartate Transaminase in gluconeogenesis?

I know that oxaloacetate cannot cross the mitochondrial membrane, but can instead be converted to aspartate, shuttled out, and then re-converted back to oxaloacetate. What does this have to do with ...

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