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12 views

Types of structures formed by various types of lipid molecules

Since Phosphatidylcholine (PC) and phosphatidylserine (PS) are roughly cylindrical in shape , they tend to form bilayers. Phosphatidylethanolamine (PE) on the other hand is conical in shape which ...
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1answer
19 views

Why can a gene lack of a binding site be expressed in skin cells?

In order for a specific gene to be expressed in the mammal’s cells, all of the gene’s binding sites must be bound by transcriptional activators. The mammal’s skin cells contain activators that bind to ...
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3answers
510 views

How likely is a lack of DNA match with a distant relative?

How likely is a lack of DNA match with a distant relative? I have recently gotten interested in ancestry research and have had a DNA analysis performed by a prominent commercial provider. I've been ...
-1
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0answers
23 views

Are there any biological implications to genetic profiling? [closed]

I can't seem to find any websites that provide information about the biological issues surrounding the use of short tandem repeats and genetic profiling (for investigating crimes).
4
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1answer
28 views

What is the criterion for genetic similarity among siblings and humans in general?

I just started reading Blueprint by Robert Plomin. He makes some well-known statements about genetic similarity which we all have read somewhere but I would like to know what the criteria for genetic ...
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0answers
15 views

Soil microbiology reference

I am after some good reference on Soil Microbe Ecology and Biology. I am a biophysicist, and have read the very gentle approach of "Life in the Soil" (James Nardi). Another book I have been ...
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2answers
51 views

By selecting sex cells after meiosis, would it be possible to create two offspring with inverse parental DNA of one another?

Would it theoretically be possible to select two sex cells after a male meiosis (filtering out the two where crossover had taken place) and combine each with two sex from a female meiosis (imagining ...
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0answers
21 views

Is this insect harmful in any way

What insect is this? Is this harmful in any way. This picture was taken in Bangladesh.
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1answer
49 views

What will happen if one keeps the photosynthesis plant active 24x7?

While reading this article online something said on it made me wonder. Also, there have been suggestions and a Dawn / Dusk type of ramp up and down to simulate the slow changes in the sun have value, ...
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0answers
36 views

What is best medium to grow bacteria in agar?

I am trying to grow 3 types of bacteria in Agar. MR1 B-subtilis Cyanobacteria I am currently using Luria-Bertani (LB) broth for both MR1 and B-subtilis. Is that a good environment for both? I also ...
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0answers
20 views

Is a virus a living thing ? If so what Kingdom of Living things should it belong? [duplicate]

Even though viruses have some of the characteristic of living things , they cannot reproduce on their own. With the covid-19 pandemic many are suggesting ways to kill the virus. If they have now ...
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1answer
43 views

Is covid vaccine helpful for a covid patient?

I am not a biology student and this question came in my mind out of nowhere. I read somewhere that the vaccines contain some denatured or almost dead corona viruses and when these are injected in our ...
-1
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0answers
22 views

Comparison between Eukaryotic and Prokaryotic DNA replication speeds

Considering the size of bacterial genomic DNA as $1.5$ x $10^{5}$ base pairs and that of human DNA as $3.9$ x $10^{9}$ base pairs, why are both eukaryotic and prokaryotic DNA replication over by ...
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0answers
20 views

Best book to read to understand human Genetics for a beginner?

I'm just a person who's interested in human genetics, genetic diseases and the human genome. I have some idea of genetics and humanity as a whole but it is not my profession. Just a hope
4
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0answers
18 views

Bacterial endosymbiosis of bacteria

Endosymbiosis was crucial to the development of complex life and it continues to happen to this day. The origin of mitochondria see bacterial guests in archaea hosts, some of which later took in ...
-1
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1answer
27 views

Amount of carbon captured in photosynthesis by a plant

Is it more proportional to the mass or the volume of the plant? I thought it might be helpful to think on the cellular level here. Even a reference to an external explanation would be useful.
4
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0answers
61 views

HPV. How do viruses persist outside the body?

The main route of transmission of human papillomavirus (HPV) is generally believed to be sexual. While fomites have been postulated for inexplicable infections, sexual health professionals regularly ...
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0answers
23 views

Does Catabolism always produce ATP?

When I try to search for an answer to this question, it seems the answer is usually that it can. Does this mean it always does so?
2
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2answers
66 views

Can almost all plant derivatives be produced with genetic engineering using fungi/bacteria?

I saw a Thought Emporium video where they produced spider silk by genetically modifying yeast. I have also read about companies making vanillin (vanilla flavour) using this technique. I am now curious ...
-1
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0answers
44 views

How to get white bioluminescence?

So I was wondering if it is possible to get white bioluminescence. Actually, I have heard dinoflagellates that produce blue light when there is some disturbance in the water. So I was wondering how to ...
-3
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0answers
23 views

Catabolism and Bond Formation

Why does catabolism mean that the large molecules are broken down into smaller ones? Shouldn't it be about releasing energy? Additionally, if it is about releasing energy, then: Since bond breaking ...
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0answers
18 views

why is photosynthesis said to absorb energy from the sun in chemical bonds when this implies energy is released?

I am reading a biology textbook. In the chapter on metabolism it first states that "forming chemical bonds releases energy". Later, when talking about photosynthesis it states that "In ...
0
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1answer
30 views

Does stronger reaction to vaccine (fever, days of nausea) mean that an immune system would have reacted the same to the virus?

I have heard that the real danger of Covid-19 is the strong immune response. Is it more likely that a person's immune system would have reacted dangerously to the virus?
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0answers
38 views

Difference between Facultative Aerobes and Facultative anaerobes

My Prof started off talking about Aerobes, there being obligate aerobes and those that can metabolise compounds such as $\ce{NO3-}$, $\ce{SO4^{2-}}$. Then he began talking about anaerobes and those ...
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0answers
15 views

In a Western blot, when analysing phosphoprotein bands can you normalise against total protein or do you need to use a loading control?

I am doing Western blot data analysis and I have probed my membrane with phospho-specific antibodies against a phosphoprotein (it is a protein kinase) of interest. I have also probed my membrane with ...
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0answers
25 views

Broadly, what are some considerations for doing a psychological study with a genetics component?

I am a Ph.D. student in a brand new lab that focuses on biological mechanisms relevant to psychotherapeutic processes. I come from a psychology/biology background (undergraduate level) and I have an ...
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0answers
24 views

Does the mRNA of the covid19 spike protein contain any nuclear localization signals

Does the covid19 spike protein amino acid sequence, as used in the covid19 vaccines, contain a nuclear localization signal. Because if they do, isn't there a chance that the RNA can find its way to ...
-1
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0answers
17 views

Do neurons have self-loops? [duplicate]

Consider a directed graph to be a model of neuronal structure where the vertices are the neurons and the arcs represent synapses between axon and dendritic terminals. Another question already asked ...
-1
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0answers
30 views

Merzenichs' experiment suggesting neuroplasticity

Nicholas carr says in his book 'The Shallows' : Merzenich proceeds to the second stage of his experiment. Using a scalpel, he makes incisions in the hands of the animals, severing the sensory nerve. ...
-3
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0answers
27 views

what decides where the translation start? [closed]

I know that the promoter decides where the transcriptions should start. But what about the translation? What region decides where the translation starts?
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1answer
24 views

Can GFP reporting be used to track localization of peptides in the ER, Golgi, and plasma membrane?

Suppose I want to study the trafficking of a peptide throughout the ER, Golgi, and plasma membrane. An idea I had was labeling a secreted or plasma membrane integral protein with GFP and using time-...
-1
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0answers
35 views

How did brown bears and black bears evolve into separate species when they share the same habitat?

It seems that wherever brown bears are found, black bears are also found. So how did they evolve into separate species when they share the same habitat?
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0answers
34 views

University Curriculum Using NEXTSTRAIN.ORG [closed]

I seek undergraduate-level curricula (i.e. lab activities) which utilize the website NEXTSTRAIN.ORG. Any good examples out there?
4
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0answers
34 views

Caloric Mimicry

Was thinking about natural "zero calorie" sweetness and how these compounds could come to be via evolution. I was specifically thinking about monk fruit. While artificial selection likely ...
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0answers
16 views

Algal booms low phosphate and nitrate levels in Polluted water?

Why does eutrophication (algal booms) take place in polluted water with low phosphate (1mgL-1) and nitrate (0.8mgL -1) concentration?
4
votes
1answer
60 views

What exactly makes red meat (probably) unhealthy?

It seems generally agreed that (even fresh, unprocessed) red meat is at least somewhat bad for human health. But why exactly is this the case? It's difficult to find any attempt at an explanation, ...
3
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0answers
17 views

What is this very small black bug? [duplicate]

I saw a very tiny black bug crawling over my computer screen the other day. Having recently acquired a "fingertip microscope" for smartphone, I started investigating. On a white paper it ...
3
votes
1answer
41 views

Impact of Terminator Efficiency in Genetic Constructs

I was looking at the iGEM Bioregistry of Terminator parts which offer varying degrees of termination efficiency. I am wondering why studies into combinatorial synthesis of genetic circuits for ...
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0answers
10 views

If the IAVI G001 HIV vaccine proves itself, why would it work?

The IAVI G001 HIV vaccine trial looks promising. If it works, will it work by preventing a single cell from being infected, or by allowing the body to attack infected cells? What I'm trying to ...
-1
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0answers
14 views

Recommendations on books about statistical analysis for Western blot data?

I have run a couple of Western blots and I am planning on doing more in the future. My goal is to combine the results from the different Western blots and perform a statistical analysis in order to ...
2
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1answer
41 views

Can Western Blots be used to quantify the activity of a protein?

I am new to Western Blot analysis and I have recently done my first two. I am studying a phosphoprotein (a protein kinase) that can be both activated and inactivated via phosphorylation at a specific ...
1
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0answers
15 views

How does flow rate of Ion channels depend on the length of the selectivity filter?

The length of the selectivity filter of ion channels such as the potassium channel commonly is only half of the thickness of the membrane. Some book such as MBoC says this can benefit the transfer, so ...
1
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0answers
73 views

What is the water content of avian blood?

I'm doing a work about heavy metal contamination in seabirds. I have found that the toxic threshold for Cu in blood is 1,15 μg/g wet weight. That number refers to an average between some seabirds. I ...
-2
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0answers
23 views

Of the indicators that indicate the quality marine ecosystems, which can be observed through satellites? Which of these are regularly updated?

I'm trying to create a tool that would analyze the quality of an ecosystem through satellite data, that can be hopefully updated. Factors like temperature of water are along the lines of what I'm ...
-1
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0answers
21 views

Will there be a precipitate if there are no cells used in isolation of plasmid dna [closed]

If you don't add any cells and just mix GTE buffer with SDS and NaOH and then mix potassium acetate will there be any precipitate formed, if yes then what will it be? If no, then why?
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0answers
118 views

What is the life of cell-free genetic circuits?

Can genetic circuits be tested in a cell-free environment? What would be their life if we keep them at room temperature? The circuits which are composed of DNA-based components are commonly referred ...
0
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0answers
57 views

How can I clone a gene into a plasmid vector with an N-terminal his tag and TEV cleavage site between the tag and the start of the sequence?

I'm a scientist who has significant experience in chemistry but am relatively new to molecular biology and biochemical techniques. I'm trying to make an isolated domain of a protein (166 residues, 19....
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0answers
49 views

How to name restriction enzyme used to cut both the foreign DNA molecule and plasmid [closed]

I have researched and found out that the names of restriction enzymes are derived from genus, species, and strain but on this illustration that our professor gave us, there's no genus, species, and ...
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0answers
37 views

How to name structures of a cleaved DNA? [closed]

So our professor was discussing about gene cloning. Inorder for genes to be reproduced, the restriction enzymes cut the DNA. As you can see in the picture, there are two letters -- P and Q. So he ...
4
votes
1answer
70 views

Pyruvate dehydrogenase: Apparently anomalous NAD/FAD redox reaction

Below is the mechanism for the reactions of the pyruvate dehydrogen complex, which oxidatively decarboxylates pyruvate and transfers the acetyl group to coenyzme A for further metabolism in the Krebs ...

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