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34 views

List type of sugar can be found in plants [closed]

Currently, I have the following sugars Fructose (monosaccharide) Glucose (monosaccharide) Galactose (monosaccharide) Sucrose (disaccharide) Maltose (disaccharide) Lactose (disaccharide) ...
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1answer
39 views

What is the kind of this wasp killing spider from UK?

I heard a wasp buzzing rigorously and when I looked at it, it was caught in a spider web. The spider was on top of the wasp. After some time, they become silent. When I exhaled gently on them, spider ...
-3
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1answer
59 views

What's the evolutionary purpose of having hearts?

According to this New understanding of heart evolution Humans, like other warm-blooded animals, expend a lot of energy and need a lot of oxygen. Our four-chambered hearts make this possible. It ...
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0answers
14 views

Database for Macroinvertebrate Taxonomy

I compiled different data sets of invertebrate occurrences across some countries and now I want to ensure that all the taxonomic information is homogenized and correct. To this end, I am looking for a ...
10
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1answer
79 views

Star-like organism seen in microscope

I found this strange star-like thing while observing a slide of onion root somatic cells. I don't know that it is; I even doubt if it is an organism. It has conical arms directed radially outwards ...
2
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1answer
131 views

Why are human bones usually curved?

Is there any simple explanation as to why human bones are more curved than straight and are thicker at ends and thinner in the middle?
5
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0answers
32 views

How old would seashells be if I found them 9 ft deep 30 miles from the ocean while digging a pond in North Carolina

This is a picture of some specimens that I found while digging a pond. I'm 30 miles from the coast in Wilmington, North Carolina and dug down about nine feet past the blue clay and hit a layer of ...
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0answers
8 views

Which other sense organs aside of eyes/ocelli do Tardigrades have?

Tardigrades have eyes/ocelli as sense organs. How about the other senses? Do they have some organ for hearing? Do they have some organ for smelling or tasting?
0
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1answer
62 views

Why do we need to grow plants to make food?

Why can't we synthesize the nutrients that we need directly from chemical reactions, from energy and simple inorganic molecules found around us? If it's hard, why not try to copy how plants do it? I ...
1
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1answer
46 views

Are casein proteins in UHT milk digestable for infants or toddlers?

As a novice cheesemaker, I have read that Ultra High Temperature prosessed milk is unsuitable for cheesemaking, as casein proteins are denatured and cannot be curdled with rennet. I have verified that ...
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0answers
17 views

Phylogenical differences with nuclear and mitochondrial DNA

This is a textbook question, I would like to verify my answers. According to the textbook it is possible to construct a phylogeny using nuclear and mitochondrial DNA and these trees to be different, I ...
-2
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1answer
80 views

Why is the size of the human penis not in proportion to that of the rest of the body?

According to this research https://qph.fs.quoracdn.net/main-qimg-2ffcc3b19663af67c96ac1be8f3d6351-c it is more likely for tall men to have large penis but there are still many tall not having large ...
-2
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0answers
35 views

Where is the greater diversity of cell types: in animals or in plants?

A 2011 paper from the Department of Biology, Dalhousie University in Nova Scotia (table of estimates, full article) suggests that there may be around 25 times more species of animals than there are ...
-1
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0answers
39 views

Why do herbivores have no horn(s) on the butt? [duplicate]

I saw few videos of hunting lions on youtube. Usually one lioness (of a group) will jump on the butt of a victim and tries to bring it down on the ground. The victim, for example a buffalo or kudu ...
-1
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0answers
56 views

Did our late Cryogenian ancestor have a heart?

If I'm correct, our Cryogenian selves might be somewhere between the Urbilaterian and the Protostome-Deuterostome ancestor (many age estimates of PDA here). Reconstructions of the former's anatomy ...
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0answers
32 views

Why are ducks more cautious than pigeons? City park paradux

In my city park there are mostly two types of bird: -Mallard duck -Rock dove (pigeons) When I feed pigeons, they approach me very close. Sometimes they peck the food that fell on my feet. If I hold ...
-2
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0answers
22 views

Edit Human gene?

is it possible (i mean practically and with todays knowledge) to edit a human gene ? for example we want to reduce the sleep length can we edit the hDEC2 gene ? or we edit some genes to make humans ...
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0answers
67 views

What is the name of this insect?

This insect was found in my garden in India, today evening. It's rainy season here.
-1
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0answers
17 views

rBGH or rBGT ussage [closed]

rBGH or rBGT is a hormone used in dairy cows to produce more milk. My question is short and rather simple, how much is rBGH or rBGT used? I can't seem to find anything on the usage of this hormone.
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0answers
30 views

Gene introduction in bacteria [closed]

I want to transform the bacteria with my gene of interest inserted inside a particular plasmid. However, transformation is not taking place due to bacterial exonuclease which is degrading the plasmid ...
0
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0answers
35 views

What is this African bug?

This is an arthropod I found in an apparently abandoned mongoose burrow in the Maasai Mara game reserve, Kenya: That was the best photo I could get of it. From what I could tell, it had six legs and ...
-2
votes
1answer
73 views

creating life in the laboratory [on hold]

Originally life came about through non life but Scientists are unable to achieve this in a laboratory . Why is this ? Is it the time factor ? I believe that it took one billion years for life to ...
1
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1answer
42 views

Growth rate oscillation in the a population of non-interacting bacteria

I have come across this theoretical paper claiming that if you start a batch culture from a single E. coli cell, the exponential growth rate of the population defined as $$k = \frac1N \frac{dN}{dt}$$ ...
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0answers
44 views

What is this? I found an infestation under my bed

I found this bug it died when I sprayed it with bleach. What is it?
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1answer
36 views

What does basipetal succession (of flowers/leaves) mean?

The definition says that basipetal succession is the arrangement of flowers such that the older ones are present at upper side and the young flowers are arranged towards base. But in this diagram: ...
21
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2answers
4k views

Why is Chromosome 1 called Chromosome 1?

Chromosome 1 is the designation for the largest human chromosome. Humans have two copies of chromosome 1, as they do with all of the autosomes, which are the non-sex chromosomes. Chromosome 1 spans ...
0
votes
1answer
38 views

Separate DNA fragments with very different size (oligo and lambda-DNA)

I am running a ligation reaction to one of the sticky ends of lambda-DNA. The oligo for the ligation is 25 bp (10x excess), whereas lambda-DNA is 48 kbp. I would like to recover the lambda-DNA and ...
1
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1answer
22 views

Photosynthesis immature fruits [duplicate]

Do immature fruits perform photosynthesis? Yes they have chlorophyll bodies. But do they have stomata through which they can absorb carbondioxide like the green leaves? Sincerely Ulrik
2
votes
1answer
54 views

I can't Identify this “bug” that seems attached to fresh cut wood

I'm a very amateur entomologist (I'm actually just an old fat hippie that loves all critters). I don't have any chops here, but I swear I've done my due diligence and tried to figure this out. I'm ...
1
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1answer
48 views

Which species of bumblebee(?) is this?

I observed this beautiful insect near a forest in northern Switzerland. What is it?
0
votes
1answer
43 views

What is this giant insect that just bounced off a second-floor glass door?

At about 11 pm, I heard a loud impact on the nearby glass door to a second-floor balcony. I thought it might be an acorn but it'd be a very unlikely angle - it'd have to be thrown from below or be a ...
0
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1answer
53 views

Need help with ImageJ thresholding

I'm trying to measure the colocalization of two proteins in a .tiff image taken with a wide-field fluorescence microscope. In ImageJ I have split the image into the two channels (red and green), and ...
0
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0answers
33 views

How does miRNA change as biomarker after disease remission? [on hold]

I am going to start a research about miRNA and I found it is not only used a biomarker as genetic susbitbilty, but also a response marker. This idea is so unintutive for me that what me to ask: How ...
0
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0answers
47 views

Can protein/codon chirality be described in tRNA molecules? [closed]

Is left-handed chiral protein and right-handed chiral RMS factored in to the tRNA molecuar structure? If so, how.
-1
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0answers
23 views

Why does our bones break or strain before our muscles when we fall?

I have seen many people breaking their bones by falling from high buildings, most of them underwent surgery after that , but i have never seen a single case of broken or strained muscles, they never ...
-1
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0answers
35 views

What is the volume of a chicken's heart and goat 's heart

What is the volume of a chicken's heart and a goat's heart? How much blood can be in their heart at a given time (baby goat's min, both avg, biggest chicken's max)? [this question is more important ...
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0answers
24 views

Why haven't humans been able to make blood producing vats?

There are people in hospitals in life threatening circumstances that need blood packages, and they fully depend on blood donors' blood. With our current technology, we have been able to "persuade" ...
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0answers
47 views

How much DNA do humans share with their first non human ancestors? [closed]

As far as I understand, by reading this Hominini Australopithecus , our last ancestors are one of the australopith species evolved into the genus Homo. By taking DNA sample of bone fossils it's been ...
1
vote
1answer
59 views

What kind of spider is this, please?

I've found this spider in my bathroom today, never seen one like this, especially since I'm living in part of Europe ( Bosnia, Balkans ) that isn't known for being promised land for spiders. This one ...
0
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0answers
25 views

What aggregates can be seen in reduced SDS-PAGE? [closed]

Can dimers and trimers of a Ig's heavy chain and light chain be seen in SDS-PAGE reduced with heat and 2-ME? Or will they be reduced to monomers? Thanks in advice!
-4
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0answers
47 views

Curing cancer via monoclonal antibody [closed]

I have read that scientist have now grown monoclonal antibodies in the lab which is then injected back to a cancer patient to cure the patient of his cancer. I was thinking wouldn't it be better if ...
1
vote
1answer
47 views

Is bacillus strain 2-9-3 really 250 million year old?

I've read that in the last decade (I believe) some scientists discovered a microorganism, which they dubbed bacillus strain 2-9-3, in a crystal of salt that they think is 250 million years old and ...
0
votes
1answer
18 views

What is ApoCas9 in the CRISPR-Cas9 system?

I am currently reading an article about a particular assay of Cas9 nucleases. In one of the experiments, they have used ApoCas9 (Apo variants of other CRISPR nucleases) as some sort of control. But ...
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0answers
15 views

How to get started with theory for (perhaps) lab based research from a clinical background [closed]

Long story short is that have a clinical background and I’m interested in doing research in oncology- specifically the stromal environment and vasculogenesis (and hopefully about placentation as well, ...
-2
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0answers
37 views

Do performance-enhancing drugs alter DNA?

Suppose someone was taking a drug that boosts cognitive performance. Would this change be reflected in his or her DNA? I'm guessing not because the genetic component of IQ is set at birth but I just ...
-3
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0answers
30 views

Does any tendon in humans receive a high amount of blood supply? Or is the property of not receiving a large blood supply a constant across tendons?

I read on https://www.physiocomestoyou.co.uk/blog/all-you-need-to-know-about-tendons/ (mirror): [Tendons] do not have a large blood supply. Does any tendon in the human body receive a high amount ...
1
vote
1answer
92 views

Does the minimum spanning tree tell us anything useful about evolutionary ancestry?

Question migrated from bioinformatics stackexchange due to lack of interest. I'm new to bioinformatics and have been reading through a bioinformatics book, and it seems calculating a phylogenetic ...
-4
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0answers
26 views

Who are homo sapiens sapiens? [on hold]

Who are Homo sapiens sapiens ? What are their specifications? Does Cro-Magnon man belong to Homo sapiens sapiens ? What are their brain capacity ? Did Homo sapiens sapiens get extinct?
-1
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0answers
13 views

Urban ecological imbalance: what would happen if we eradicated cockroaches? [duplicate]

What could the effect of exterminating all cockroaches from an urban area? Could we trigger another plague, that's being kept at bay by cockroaches? Are we causing some collateral damage, if ...
-2
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0answers
34 views

Is the morphology of the insertion of the gluteus minimus to the greater trochanter acquired or innate? If acquired, what are the factors? [closed]

{1} noted two different morphologies for the insertion of the gluteus minimus to the greater trochanter: Two morphologies noted: The majority (11/14) were long, thin, and crescent shaped and ran ...

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