0
votes
2answers
57 views

Does RNA serve as the genetic material of some plants and animals along with viruses?

My teacher mentioned that some plants and animals have RNA as genetic material but did not substantiate his statement with examples. I'm wondering if it is so? I have searched the internet but have ...
0
votes
1answer
10 views

What is the total estimated biomass of Earth?

If possible could you also give the distribution according to species or ecosystem wise such as, aquatic, terrestrial etc.?
0
votes
1answer
8 views

What is meant by topographic barrier?

There are three types of barriers, physical , climatic and biological barriers that can prevent the dispersal of organisms. Topographic barrier falls in the category of physical barrier but exactly ...
3
votes
1answer
35 views

Forgot to vortex antibody before staining

Ugh. Did an immunofluorescence experiment last weekend, forgot to vortex both my primary and my secondary antibody solutions. And my final result looks dimmer than it should be. Is it possible that ...
-1
votes
0answers
16 views

Why does uncompetitive inhibition decrease the Michaelis constant?

I can't seem to find a good resource online that clearly outlines the difference between an uncompetitive, noncompetitive, and mixed inhibitor (I understand competitive inhibitor though). More ...
0
votes
0answers
22 views

Are all genetic instructions in DNA?

Wiki says DNA is a molecule that carries most of the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses. What ...
-3
votes
0answers
35 views

About a question on genetics [closed]

What are the detail informations about "C" value enigma and parradox should I know?
-3
votes
0answers
11 views

How to wash hands Properly?

I have heard from my childhood that wash hand or else you will be sick...Is is true? Bye the way what do you mean by this wash hands..or how to wash hand properly?
3
votes
1answer
17 views

Could a large constrictor kill a small animal?

According to this article there was a python whose body circumference was 85cm. This means its diameter was 27cm. Would it be possible for this snake to constrict animals that are about the same ...
3
votes
1answer
2k views

What happens in your brain when you receive information which causes you to bristle?

I'm talking about moments when you watch a film and you bristle, or when you listen to music, etc. What kind of neurotransmitter flow changes?
0
votes
1answer
32 views

ExAC Browser: What does a “dubious variant annotation” actually mean? [on hold]

I wonder how a "dubious" variant annotation is exactly defined in ExAC. I couldn't find any further information neither at the variant's page nor in the FAQs. Link to ExAC browser. Link to variant ...
3
votes
1answer
134 views

What's the (or some of the) minimum(s) amount of atmospheric carbon dioxide needed by plants?

We currently have a problem of increasing CO2 in the atmosphere. But assuming we find a way to carbon sink it, what is the minimum CO2 we need to leave in the atmosphere to provide a source for ...
0
votes
0answers
5 views

Phase separation of FIB1 Protein in NaCl solution

What is the mechanism of phase separation that causes droplets to form in a solution of proteins and NaCl, given the concentration of NaCl that allows this to happen?
2
votes
1answer
59 views

Species Identification: Bulbous root on plant, Southern California, USA

In Southern California, I was pulling out some roots and grasses and weeds in our backyard, and I noticed something weird. It appeared like there was a grape-sized bulb of something connected to one ...
9
votes
1answer
386 views

First RNA polymerase-mRNA

We know that RNA polymerase produces mRNA by reading DNA strand. Which enzyme produces the first RNA polymerase if other RNA polymerases are synthesized in the same way like other enzymes(proteins) ?
0
votes
1answer
19 views

What is the effect of wheat's polyploidy on wheat itself and on us?

According to Wikipedia, "Hexaploid wheats evolved in farmers' fields", and bread wheat is among them. There is also diploid and tetraploid wheat. I guess that hexaploid wheat, besides the obvious ...
0
votes
0answers
17 views

How does plant life obey the constraint that the change in Gibbs free energy in a reaction must be negative?

My understanding is that if a reaction takes place, either entropy of the system must rise, or energy must be released from the system as heat, or both. (Citation: paraphrasing from The Vital Question,...
3
votes
1answer
37 views

Why is the Pentose Phosphate Pathway so active in erythrocytes?

Is it because glyceraldehyde -3-phosphate (a molecule which when enter glycolysis help produce ATP through substrate level phosphorylation) can be prepared without losing an ATP through this process?
2
votes
1answer
58 views

Difference between the P4 and P5 subtypes of P-type ATPases in plants

In plants there are various kinds of P-type ATPases. What is difference between P4-ATPase and P5-ATPase?
0
votes
1answer
38 views

Amino Acid requirement + intake in relation to diet + meat type [on hold]

I was arguing with a friend: I said: The Yulin festivals cannot be condemned by western culture, as we also kill animals in equally cruel ways. She said: It isn't just that the killing is cruel, ...
1
vote
2answers
68 views

Why is DNA Shuffling more efficient than Point Mutation?

In a related post on Biology-SE the following insightful comment was made: The advantage of DNA shuffling over introducing single mutations is that you have to screen fewer mutants and the ...
0
votes
0answers
6 views

Can temporomandibular joint disorder cause sensorineural hearing loss?

Is the pain when walking or running with such a disorder an indicator that hearing loss is occuring or going to occur? Ear pain is considered a symptom for this disorder. Can that be an indicator of ...
0
votes
1answer
28 views

Deducing protein sequence length from gene DNA sequence length

Is there a standard way to deduce protein sequence length from gene DNA sequence length of the gene coding for it? Naively I had assumed that ...
0
votes
2answers
32 views

Predator prey interaction [on hold]

I went through a line in my textbook which read: "But for predators, prey species could achieve very high population densities and cause ecosystem instability." I was not able to understand the ...
0
votes
1answer
17 views

How to put a gene under the control of a regulable promoter?

Suppose I have a hetrologous (eukaryotic, plant) gene sequence that I want to express in E Coli under the control of a regulable promoter (say the lac promoter induced by IPTG) how exactly does one ...
2
votes
1answer
26 views

Is there evidence to suggest that sharks from prehistoric times live in the deep of the oceans?

I've had friends see the boat and giant teeth of a giant shark attack of a boat in Japan. (Teeth larger than a great white). [I can't find anything about this on the Internet]. In addition, this ...
2
votes
2answers
44 views

How do prions transmit their conformation to other proteins?

I was reading about prions and many sources say something to this effect: "Prions may propagate by transmitting their misfolded protein state: When a prion enters a healthy organism, it induces ...
0
votes
0answers
21 views

Can crocodiles live past 155 years of age?

I was at the Teluk Sangat Crocodile Farm ("Crocodile World") in Johor, Malaysia. There were a bunch of crocodiles that were claimed to be 60-80 years old (these were printed signs), one or two that ...
-2
votes
0answers
14 views

Choose the intruder [on hold]

A. Antibody B. Antibiotics C. Micro-tubule D. Cholesterol I couldn't find a link between any of these 3 components to actually find an intruder.
0
votes
1answer
40 views

How does DNA Polymerase make errors? [on hold]

DNA Polymerase inserts the wrong nucleic acid base into DNA at a rate estimated to be between 1 in 107 and 1 in 108. How does it determine which base to match to the template strand, and how does it ...
0
votes
0answers
29 views

Stopping the Gag Reflex: How and why does it work?

I was talking to some friends over the weekend, and one of them made a comment about gagging. He said that he read or watched that clenching your thumb with your other fingers (making a tight fist ...
1
vote
0answers
20 views

Absorption of nutrients in human beings [on hold]

I know that pulmonary veins carry oxygenated blood from lungs to heart, and pulmonary arteries carry deoxygenated/CO2 rich blood from heart to lungs. Arteries also carry oxygen-rich blood to the heart ...
14
votes
1answer
148 views

What's the mechanism for being mentally tired?

I notice that after long tests, or long periods of critical thinking, my body and mind feel noticeably tired. Why does this happen? Are the neurons in my head not firing as quickly, or is there just a ...
-1
votes
0answers
6 views

How to Study PR intervals as HRV Metrics? [on hold]

I am trying G. Clifford book about ECG Data Analysis 2006. RR intervals are mostly used as HRV metrics. PR intervals not because of low magnitude of detection. I would like to get some samples of such ...
0
votes
0answers
15 views

RNA interference and the former Petunias experiment >

I'm having problems trying to understand how RNA interference works. From what I understood, in simple terms there is this dsRNA which is fragmented into siRNA by the enzyme called Dicer, and those ...
0
votes
0answers
8 views

Restriction enzyme recognition sites for plasmid libraries

I'm having trouble with the following question: You wish to cleave genomic DNA into fragments average about 2kb for cloning into a plasmid library. Which of the following restriction enzyme ...
0
votes
0answers
25 views

Influence of alcohol/hangovers on sex drive [on hold]

I have noticed that whenever I go out and drink alcohol I'll have a much higher desire for sex with my hangover the next day. I'm harder and the sex is better (this is not a troll question btw, I'm ...
1
vote
1answer
98 views

How much do crocodiles eat?

How much do crocodiles eat? The closest I found to an answer was on German wikipedia, where it says that adult nile crocodiles eat "only about 50 full meals a year." While interesting, without knowing ...
-1
votes
0answers
22 views

Why people have less hair than other primates?

Well as you can figure out, most primates such as monkeys, gorillas and chimpanzees, have all their body covered with fur. As we know they are evolutional "relatives" to us humans, but we dont have ...
1
vote
1answer
19 views
+50

Which ingested allergens can be transferred to a partner via bodily fluids?

Can some allergens, such as peanut traces, appear in bodily fluids (saliva, sweat, semen, vaginal secretion) after ingestion? I would like to know in particular intake of which allergens should be ...
3
votes
1answer
537 views

Storing Taqman plates with polymerase in fridge before running

I'm going to be running some Taqman assays on cDNA generated from RNA collected from various samples, and will end up running a bunch of plates (right now the setup is 1/2 a plate per sample, ...
0
votes
1answer
44 views

Determination of genes to be modified in epigenetics [closed]

It seems that during reproduction particular genes are targeted for modification (mutation, deletion, insertion, etc.) given environmental inputs of either or both of the parents. If a creature was ...
4
votes
2answers
121 views

In DNA repair, how is it determined which strand contains the error?

DNA replication is more accurate than transcription (or RNA replication) because mechanisms exist for proof-reading and repair of DNA, but not for RNA. Consider a segment of a DNA strand, AGTC. Its ...
5
votes
1answer
43 views

How much do urban pigeons move around cities?

Do they tend to live their lives in one area of the city or do they move around? For example, do pigeons born on London's Trafalgar Square live their whole lives centered around Trafalgar Square or ...
0
votes
1answer
39 views

Taking care of Birds: Unwanted species scaring away a less common one from a birdhouse

Near my house, I have set up a birdhouse, which has become home to a pair of Oriental Magpie Robins. They are not a common species in Delhi, India, and are generally shy of human interaction and avian ...
2
votes
1answer
61 views

What is membrane-partitioning free energy? Can it be simulated?

Firstly, is there a strict definition of the "membrane-partitioning free energy"? It is banded around in membrane biology, but I have never seen it strictly defined. The only non-scholarly site that ...
1
vote
0answers
12 views

O-Group names of Salmonella serotypes?

What liposaccharides are represented by the O-group designations of Salmonalla serovars in the Kauffman-White classification scheme? I mean to ask, how do the numbers in a Sal serovar (1, 9, & 12 ...
1
vote
0answers
379 views

Why do orcas eat only the tongue of whales, liver of sharks, etc.?

I noticed that although killer whales are clearly the top predator living in the present oceans, some of them appear to be very picky with their meals. After spending hours hunting down a whale, ...

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