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1answer
38 views

Properties of berries that are not shared by strawberries [on hold]

What are examples of properties that (all) berries (from a botanical point of view) have and that strawberries do not have? This does not need to be the exact reason, why strawberries are not counted ...
1
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0answers
33 views

Can genetic circuit alone alter protein structure? [on hold]

I would like to know if there are examples of genetic circuits, that usually appear in synthetic biology, can modify aspects of protein structure (allosteric sites, regiospecificity, and so on) i.e. ...
1
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1answer
65 views

What is the name of this bug?

I found this bug in my garden in India this morning.
1
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2answers
51 views

regarding evolution of ears and sense organs [closed]

How could we(or any other organism) have developed ears through evolution when before having ears we did not know that sound waves existed or there was anything such as hearing? How did the first ...
1
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1answer
31 views

What are some examples of animals who return to their group when threatened?

Based on my (limited) understanding, some types of animals use the power of numbers for protection. I assume, then, some species instinctively respond to threat by immediately seeking out and joining ...
2
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1answer
73 views

Can you help me identifying this spider?

I took this picture in Ohrid, Macedonia, it is the first time I see this kind of spider here. This spider was 2-3 cm long and was outside in urban building.
-1
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1answer
44 views

Probability for a megafauna specimen to exhibit a gene not present in either parent

What is the rough probability for a megafauna specimen to exhibit a gene not present in either parent? I'm looking, ideally, at the chance for one specific individual to be the first in a breeding ...
-1
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1answer
52 views

Estimate for number of genes changed in speciation between a megafauna parent and child species [closed]

At least in terms of a back-of-the-envelope calculation, what is a believable range for the number of gene changes between parent and child species to represent speciation between species of megafauna?...
-1
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0answers
17 views

What is the function of (IGF-1) hormone

(IGF-1) is a hormone found in all milk-based products and humans and cows and probably some other animals. But what is it responsible for, what role does it play in the human body? also, does it play ...
1
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1answer
32 views

Did the first cell self-replicate or was it multiple first cells? [on hold]

We're almost sure by now that the first cell was born in a some kind of underwater vents environment which harvested all the necessary conditions for it to exist. However, did the first cell self-...
1
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1answer
27 views

Water sample preservation

I am taking my students to collect water samples from different bodies of water. These bodies of water include the local river, a park pond, and water accumulation from recent rain. Once we gather the ...
2
votes
1answer
25 views

What is the probability of an offspring sharing identical HLA typing as one of their parents?

DISCLAIMER: I have yet to thoroughly study HLA 100% to the bone, and hence I won't know everything about it at the back of the hand. Recently I came across this information on a San Francisco ...
1
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0answers
12 views

Preserved flowers in epoxy resin [closed]

I want to cast flowers in resin. The problem is that everyone is casting dried flowers in order to prevent the moisture from fresh flowers evaporating while the resin is curing and I need to cast ...
1
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0answers
21 views

Can you predict what the metabolites of pipradrol would be? Are they similar to those of methylphenidate? [closed]

As these drugs are structurally very similar, I am curious about how the body would handle them. Ritalinic acid is a major metabolite of methylphenidate, but that's about all I know. Thanks ...
-4
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0answers
33 views

Help to identify this plant please, is it a weed? [on hold]

These ‘cluster’ plants are growing all over my rockery garden area. There are no flowers, as yet. The longest leaves are about 7 to 8 cm long. They
2
votes
0answers
19 views

What are the various parts of an ant hill

How can I identify the parts of an ant hill structure from a casting? Specifically, if there is no real commonality between species, I would like to identify the various parts of a fire ant mound in ...
0
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0answers
17 views

Per Capita Population Growth Rate and Exponential Growth. Rate constants

As many of us might know, the set up of a differential equation relating instantaneous population growth with respect to time to the per capita population growth rate and current population size at an ...
5
votes
1answer
63 views

Leaf formation on unknown tree: cocoon or something else?

A small tree in my yard has leaves which appears to double over themselves. The first two pictures show this phenomena, and the third is the same tree to maybe aid identification. I can't absolutely ...
1
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0answers
16 views

Single-cell ATAC seq arrays

As part of a data analysis project, I encountered two kinds of single-cell assays for transposase-accessible chromatin using sequencing (single-cell ATAC seq) methods. The first uses combinatorial ...
1
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2answers
45 views

How much does capillary action contribute to blood flow to the human brain?

The BBC News Universal Wonders short video Why water is one of the weirdest things in the universe says after 01:50: Water molecules can float upwards against ...
-2
votes
0answers
24 views

dNTPs dilutions [closed]

Do you know why dNTPS are sold separately in a concentration of 100mM, why companies don't sell a mix of dNTPs all together? There is a chimical explanation? And if I put 20ul of each dNTPs in 120ul ...
1
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0answers
51 views

Why don’t plant cells need centrioles? [duplicate]

I’ve just learned about cell division and I noted that plant cells don’t have centrioles but still undergo cell division. I’ve read a few documents about it and wondered why plant cells don't have ...
1
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1answer
46 views

Identify this wild plant with brilliant scarlet red flowers

Location is Virginia, USA They seem to last all summer
1
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1answer
27 views

Is the quiescent centre only found in monocot roots?

I read that the quiescent centre is present between the dermatogen and calyptrogen. As calyptrogen is only present in monocot root, does that mean quiescent centre is only found in monocot roots?
0
votes
1answer
43 views

Where can I obtain the sequence of the E. coli ribosomal RNA precursor?

I have found separate sequences for 16S rRNA (from the small subunit) and 23S rRNA and 5S rRNA (from the large subunit). I need the full precursor rRNA sequence, which I cannot find. However the ...
2
votes
1answer
128 views

What will happen if mitochondria had a structure like lysosomes?

I wanted to know an explanation how the structure of mitochondria affects its function. Therefore, how would it turn out if its structure is like the structure of lysosomes, what is going to happen?
0
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0answers
32 views

Is this a living organism?

Is this thing a flower or marine plant?
1
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0answers
30 views

Rubbery Orange and Fuzzy Mould From Bread

So I share a house, and my other housemates are currently away. One of them had some "plain" bread (a popular type in Scotland), complained a piece had mould on it, and so I had assumed they'd thrown ...
0
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0answers
19 views

Immunological response to antibodies? Streptokinase?

Why is it not recommended to use streptokinase in the event of a second clot shortly after the first? In this graph below is an illustration on the amount of antibodies to streptokinase in the blood ...
1
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1answer
33 views

Will amylase inhibitors affect the colorigenic reaction between starch and iodine?

I'm doing an experiment for my IB bio EE involving colorimetry. I'm not experienced at all with colorimetry, so I'm having some trouble planning it. The experiment is on enzyme kinetics, and I'm ...
-1
votes
1answer
56 views

How to find which genetic pattern is responsible for structure of a cell

I studied that DNA are blueprints that describes an organism. How do I learn more specifically about DNA regions responsible for storing structure of a cell. By Structure of a cell I meant to ask ...
1
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0answers
14 views

Is SCNT possible with only the nucleus of a somatic cell (rather than a whole somatic cell)?

The following figure from Life: The Science of Biology (11th edition) explains how SCNT (somatic cell nuclear transfer) was used in the cloning of Dolly: (The original paper about cloning Dolly - ...
0
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0answers
33 views

Are there any kinds of mushrooms that grow on higher animals?

I just want to know if there are any known fungi that live in a parasitic or symbiotic relationship with animals, that also grow fruiting bodies on the outside of the organism. The only one I can ...
0
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0answers
28 views

Regarding mismatched blood transfusion [on hold]

Why the recipient's RBC remain unharmed in a mismatched blood transfusion ?
0
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1answer
39 views

Why is the amount of protein variants in a human genome higher than gene variants? [on hold]

Why does the human genome have more protein variants than gene variants? Is this because of PTMs?
-1
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0answers
37 views

is immortality possible in humans and if so how? [closed]

What does it take for an organism to be immortal (not die of aging), especially one as complex as humans? Answers just have to be scientific. Technology is fair game
-1
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1answer
46 views

Why do watermelons have a rind? [closed]

Random questions come up when talking with friends - such as this one! We were curious: what are watermelon rinds good for? So what benefits does it give the watermelon? Why did mother nature give it ...
-2
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0answers
25 views

Allergies pertaining to nightshade [closed]

A person is not allergic to potatoes but is allergic to eggplant and radish. But all three vegetables belong to the nightshade family. What makes the allergy to eggplant and radish possible? Is it ...
1
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1answer
55 views

Can you identify this insect (orange back, 6 legs)?

Found a couple of them in central europe on a zucchini plant (in august). They are about a centimeter in size. Tried looking for insect with orange back and 6 legs but no result. [EDIT from comment]...
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0answers
35 views

Blood and hair follicles from 25 people put on the Moon; enough to regenerate a human population?

Discussion on the question Why were blood and hair follicles from 25 people put on the Moon? calls into question whether this is a stunt or might have any basis in science. There's two parts to my ...
1
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0answers
4 views

What renders a cytoplasm basophilic?

I know that being basophilic or acidophilic corresponds to affinity to certain dyes used in microscopy. What i want to know is what characteristics of the cytoplasm can we infer from its basophilic ...
0
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0answers
21 views

How do feral pigs get their tusks back?

Domestic pigs and wild boars are the same animal. There's virtually no genetic difference between the pigs kept on farms and those roaming in the wild. As I understand it we have selectively bred our ...
0
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0answers
5 views

absorption spectrum & photosystems

i've a doubt in biology on photosynthesis and it's super confusing to attempt to solve solo. can someone help me out please? my biology textbook states that photosystem 1 and photosystem 2 has ...
3
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0answers
48 views

Is mating between human and non-human primates theoretically possible?

I wonder if it is theoretically achievable to produce living offspring between a human and a non-human primate. Great apes have 24 pairs of chromosomes compared to our 23, however, it is known that a ...
0
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1answer
24 views

Are pseudogene counted as a subtype of long non-coding RNA genes?

Are pseudogenes regarded as a subtype of the genes for long non-coding RNAs? I could not find the answer to this question in an internet search.
0
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1answer
40 views

Why do death cap mushrooms not warn of their poison?

This has been puzzling me for a long time now. There is an evolutionary predilection for living things which have evolved strong defensive measures (that may not themselves be visible) to give ...
0
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0answers
13 views

Iterative macrocyclic design in drug design [closed]

Suppose that I have some proteins (for example, kinase) that their structures are completely determined (cryo-EM, crystal structure from X-ray crystallography). Given that I have raw peptides, I want ...
0
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0answers
14 views

Is there any resource where one can find all the primary sources (researches) for college level biology textbooks (example: Campbell Biology)? [closed]

I am wondering if there is a dedicated website/database/book/resource to find all the historical researches which either directly contributed to or were compiled to form biology textbook.
1
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0answers
34 views

Do monkeys understand 2+2?

Asked on behalf of my 9-year-old son: As the title says, do monkeys understand 2+2, or math in general? If so, to what extent? Can they compare individual objects to groups, understand greater/less ...
-1
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0answers
34 views

Excluding one step from the cellular respiration, and consequences? [closed]

What would the consequences be if energy extraction took place in one step of the cellular respiration, and not in the three processes of the cells? Namely, glycolysis, kerb’s cycle, and the electron ...

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