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28 views

Why are albino peacocks impossible?

Why is leucism, partial loss of pigmentation, but albinism, the total lack of pigmentation, not possible in peacocks?
-1
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1answer
68 views

It is possible that for an immortal species to arise via biological evolution?

It is possible that for an immortal species to arise via biological evolution? In biological evolution, living organisms continues to change. However, is there a point wherein evolution stops due to ...
2
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1answer
32 views

Why do bees fly inside the gaps between the decoration on the exterior wall of a building and the wall?

My house has decorations around the windows on the exterior wall: There are gaps between those decorations and the bricks of the building: During the summer, there are always bees looking for those ...
2
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1answer
43 views

Help ID snake near Deming NM

This snake is in our yard, south of Deming NM, in Luna County. Approximate length is about 3 1/2 feet. It moved slowly at the time, but was being picked on by a couple of medium-sized birds. It is ...
0
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0answers
6 views

Are there any companies that sell Totalseq antibodies that can bind fluorophores conjugated on another antibody?

Are does anyone know of any company which sells Totalseq antibodies that are capable of binding to fluorophores conjugated to another antibody? In this context, I plan to use the Totalseq antibody as ...
-1
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0answers
31 views

Why do we feel cold in dark places?

Yesterday, I was in my room which was well lit. And then I went to the other room, where the lights were all off, and to my surprise, I felt that room colder than my well lit room. I thought that it ...
-1
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0answers
8 views

Auditory distance perception

How do humans detect the distance of sound? For example if my phone is ringing in the other room how do I know that it's in the other room and not beside me? I am planning on developing a software to ...
2
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0answers
18 views

What coastal creature leaves braid-like trace that has clear landing and take off points?

6/29 around 8 PM EST (within 40 minutes after downpour) the depicted trace was found in swash zone at Jacob Riis Park in NY. For reference the boot size is 12.
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0answers
26 views

Could anyone kindly identify this bug for me? Is it harmless?

Details: Found by a wall/window in Brooklyn, NY in a house not too far from the beach Rooms walls/windows are dusty and spots of mold growing on wall/windows size of bug: 2 milimeters Keywords I've ...
0
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0answers
8 views

Is there a way for POPart to accept indels in chloroplastidial genes?

I need to construct a network concerning chloroplastidial genes using POPart. My problem is that POPart does not know how to deal with indels. I have already coded them using SeqState (simple indel ...
-1
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0answers
40 views

How do you experimentally prove that conjugation has occured (in bacteria) and the recipient cell has received the F plasmid? [closed]

I was studying conjugation with 2 bacterial strains. The donor strain was Kanamycin resistant and the recipient strain was Kanamycin sensitive. After conjugation, cells were plated on LB agar + ...
0
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1answer
27 views

Is the leading strand consistent in the same chromosome with multiple replication forks?

If a chromosome has multiple origins or replication, do those origins necessarily pick the same DNA strand as leading and the same one as lagging, or can they be of opposite orientations, sending ...
0
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1answer
33 views

Cell-autonomous viral defense involving oxidative burst?

I'm looking for a mechanism by which a cell detects a virus (probably a retrovirus) within itself, then triggers an oxidative burst in response. This should all happen within the cell itself, ...
-2
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0answers
22 views

Can Cells Be Trained?

A long time ago, I heard (from what source? I do not remember clearly) that there were studies of the effects of the mind on cellular activities. Vaguely, I remember that it concerned an increase in ...
0
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0answers
15 views

Why does exposure to a smell for some time reduce the electrical response of receptor neurons in the olfactory system?

In what way does exposure to a certain smell for some time causes them to loose sensitivity and have a lesser electrical response
6
votes
1answer
117 views

Why is egg white alkaline?

According to Tiefenbacher, Egg white is naturally alkaline with an initial pH of 7.6–7.9 but in storage the loss of carbon dioxide by diffusion through the shell increases the pH of the egg white up ...
0
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1answer
27 views

Is there any description about how microbes spread from a small place to a very large place?

Is there any materials (such as books, papers or others) about how microbes (such as the bacteria or virus) or a special kind of microbe spread from a small place to a very large area (such as the ...
2
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0answers
38 views

Do SARS-CoV-2 virus particles really travel through filopodia and “emerge from the tips”?

Watching the new University of California San Francisco video Coronavirus forces cells to produce tentacle-like structures that infect neighboring cells I saw The growths spread out, and ...
1
vote
1answer
111 views

Help identifying an insect by its remains

Yesterday i hiked in Bolsena lake, Italy. I felt this insect moving into my ear. So i smashed my ear and this is the result. Please tell me that there are no risks related to Lyme desease or similar. ...
0
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1answer
34 views

Can twins that develop in separate sacs but share the same placenta be identical?

I have two younger non identical twin sisters. When my mum was pregnant she was told they were both in different sacs when developing but shared the same placenta. We have done hours of research on ...
0
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0answers
11 views

What is the lifespan of haemonchus contortus in its L5 adult form?

Once haemonchus contortus reaches L5 in the abomasum, absent external factors (such as treatment of the infected animal with an anthelmintic), how long can it live there?
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0answers
32 views

Is “Retinal Glial Cells Enhance Human Vision Acuity” creationist propaganda?

The paper Retinal Glial Cells Enhance Human Vision Acuity is profusely quoted by creationists as "proof" of the "perfect design" of the human eye. The paper is about biology but ...
0
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0answers
44 views

Is there such a thing as an autotroph that doesn't use photosynthesis?

I've heard of photoautotrophs, which are just autotrophs that use photosynthesis. What I'm wondering is if there's any other way for an organism to make its own food that doesn't involve it using ...
2
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0answers
43 views

How does sleep prevent our eyes from drying out?

If we don't sleep for about 16 hours, our eyes start to get dry, and no amount of eye drops helps. You use eye drops and then you're dry 10 minutes later. However, after you've slept for 8 hours, your ...
1
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0answers
17 views

What is the exact definition of mitochondrial depolarization?

Proton gradient := the gradient created when hydrogen ions moves to the intermembrane space from the mitochondrial matrix. Mitochondrial membrane potential := the potential energy created by the ...
1
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1answer
44 views

What's the name of this colorful tiny spider?

Found this colorful spider yesterday in my study. Couldn't find exact match over internet. Does anyone know what spider is this? Is it harmful?
0
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1answer
15 views

Does venule have smooth muscle layer?

Does venule have a smooth muscle layer? the pics I've seen on google are two types: 1- they have: 2- they don't have what's the story? it's not homework, think ...
-1
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0answers
17 views

Does active oxygen hurt wounded bamboo tissue?

I have a bamboo which is going yellow and I want to cut off the top part which is still green and replant it. A gardener told me I should disinfect the wound (which I will create by cutting the top ...
1
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0answers
22 views

Why do some plants develop a shiny layer that looks like plastic?

I noticed some plants that look almost as if they were made of plastic and am wondering what and why that is. Here is a sample photo: My guess is that this might be some sort of waxy cuticle that ...
0
votes
1answer
29 views

What causes eye strain when viewing any display?

Few everyday experiences: Staring at the physical paper (or any other sight in nature) doesn't cause eye strain. Staring at the LCD screen causes eye strain. Some of the differences in properties I ...
1
vote
1answer
56 views

Did most pandemics originate from Asia/China?

This question may be on the borderline of well-posed-ness. Let me ask it. Then please tell me if or where it can be improved. Is it statistically true that the majority of the pandemics or epidemics ...
0
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0answers
71 views

For how long viruses survive in non-air moisture environments?

On the Internet there are plenty of information that viruses don't live long after they were exposed to air, after they starting to dry out. But it's hard to find an information on how long viruses ...
3
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0answers
17 views

What is the minimum atmospheric pressure at which bees can live/thrive?

Bees are amazing little critters. (Gosh, they're cute.) But what if we colonize Mars and start terraforming it? At what point will bees (and other insects) be able to live/thrive in that environment? ...
0
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0answers
9 views

What are the differences between how latewood and earlywood forms and how does this effect it's properties?

In trees the earlywood forms a somewhat abrupt transitions to the darker latewoods that happen during the summer months. What are the chemical differences that arise in this wood at the cellular and ...
5
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2answers
62 views

How do anticholinesterase pesticides kill nematodes?

Compounds that inhibit the enzyme acetylcholinesterase are commonly used as pesticides. In animals with centralized respiratory systems controlled by the nervous system, poisoning with an ...
-4
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0answers
24 views

Time Traveling Ape

If you could time travel into past and into the future how far would you need to go before you could not interbred with the native population? Was watching show, huge time jump and then thought ...
1
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0answers
33 views

Bug identification

This little thing was stuck in my toe. Not sure if its head is missing or sth. Do you know what this could be? Found in central Europe.
2
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0answers
35 views

Identification of the bug on the curry leaf- Delhi, India

I found this bug on my curry leaf in early morning. Which bug is this? Size- 1-2 cm Habitat- Delhi, India. The bug was on one of the curry leaf of the curry plant pot in my residential balcony Time- 7:...
2
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1answer
60 views

Identify arthropod with many legs in Mumbai

Can someone please identify this ~5 cm long arthropod? I've been finding one of these every 2-3 days inside my apartment ever since rainy season started here in Mumbai (June). The bulb portion is its ...
0
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0answers
29 views

Examples of species whose extinct common ancestor is well documented?

If we follow the ascendence line of two closely related species we can build a "Theoretical" common ancestor, whose characteristics were inherited with few differences by the offspring. <...
0
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0answers
12 views

Botany practice questions for self-study

I am studying for the USA Biolympiad. I have read Raven's Biology of Plants and Reece's Campbell Biology, but I am struggling to find plant biology practice questions. Can anybody recommend some ...
3
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1answer
29 views

How do animals contain and dispose of bacterial endotoxins (lipopolysaccharides)?

Gram negative bacteria naturally release endotoxins which are lipopolysaccharide molecules. These molecules are toxic to many eukaryote cells, including macrophages. My question is how animal ...
0
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0answers
23 views

Molarity of phosphate in intracellular phosphate buffer system

Phosphate buffer system keeps intracellular pH near the pKa of the $\ce{H2PO4^- <=> HPO4^2-}$ equilibrium, pH 7.2. Most intracellular phosphate is bound up in larger molecules like phospholipids,...
1
vote
1answer
83 views

What are these black masses floating on my pool?

I've been cleaning them for some time. At first I thought it was some kind of synthetic material, but when I took one with my fingers it disintegrated into filaments. I placed another under my usb ...
2
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0answers
30 views

Why largest cats so much larger than canids?

It is striking to me that there is no dog-like creature larger than a wolf while there are at least two species, tigers and lions, many (at least twice and probably 3 or 4) times the size of the ...
2
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1answer
58 views

State of extracted DNA

A well-known and commonly-done experiment is to extract DNA from strawberries or other fruit by first mashing the fruit of choice, adding the mush to a mixture of water, salt, and detergent, and then ...
0
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1answer
37 views

Are earthworms edible?

Just that. It seemed weird for me not to find anything on Google. But I still think that they might be edible.
0
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0answers
10 views

Is faster breathing during exercise linearly more efficient?

Evolution's an amazing thing. It has this incredible ability to optimize variables, and often these optima can then be learned by people to gain insight into various biological phenomena. In exercise, ...
-1
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0answers
31 views

What kind of North American bug is this?

Found dozens in my home in the southern part of North America.
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0answers
17 views

Does thimerosal have some of the same mechanism of action as sodium benzoate?

I noticed that thimerosal's molecular structure is basically just sodium benzoate with an attached chain that includes a mercury atom. Sodium Benzoate Thimerosal The Wikipedia article for thimerosal ...

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