All Questions

0
votes
0answers
3 views

What does unsuppressed HIV-infected individuals mean?

When we speaking about an unsuppressed HIV-infected individuals, does it necessarily imply that these individuals are treated, i.e. take antiretroviral therapy, or does it also include untreated ...
0
votes
0answers
5 views

Can (or have) antiviral drugs created drug-resistant viruses?

Evolution/emergence of antibiotic-resistance in bacteria is a known effect of extensive use of pharmaceutical antibiotics. Pharmaceutical antivirals have come into extensive use in recent decades – e....
0
votes
0answers
4 views

Does spinal chord experience pain when hurt?

Brain does not experience pain as it does not have pain receptors. Does spinal chord experience pain when hurt?
0
votes
0answers
11 views

Why exclusive breast feeding for 6 months only?

Where does this norm of 6 comes from? Why not 4 or 5 or 7 or 8 or 9 or anything like that? Is it based on any review, research or religious texts or just cultural practice in certain communities?
0
votes
0answers
13 views

What is the structure, function, and interaction of the 3 major types of proteins? [on hold]

What is the structure, function, and interaction of the 3 major types of proteins intergal,peripheral and lipid-anchord with the lipid bilayer?
1
vote
0answers
8 views

Using expression vector to express arsenite oxidase genes in E. coli

So I am trying to express a gene cluster that can oxidize arsenite into arsenite autotrophically. The arsenite oxidase gene cluster sequence is linked here: https://www.ncbi.nlm.nih.gov/nuccore/...
0
votes
0answers
16 views

How researchers are able to discover a new molecule?

There are some research papers that go like this "researches have found a new molecule/protein called "xyz" that play a role in "abc" process. In a more concrete example, in immunology: How CD ...
-1
votes
0answers
10 views

Doing Amgen Biotech Unit [on hold]

You need to catalog all the products you might see, including the different plasmid configurations. Review your work in Laboratories 2 and 3. What products might you expect to see in the K–, K+, A–, A+...
1
vote
0answers
15 views

Did the Broadbill Swordfish population fully recovered?

Regarding the Broadbill Swordfish Xiphias gladius: I read Richard Ellis "Swordfish: A Biography of the Ocean Gladiator", Chicago University Press, 2013. The chapter about industrial-strength fishing ...
-1
votes
0answers
20 views

Whether golgi body single membrane bound or double membrane bound?

Whether golgi body single membrane bound or double membrane bound cell organelle. Also the membrane or membranes bounding golgi body phospholipid bilayer?
3
votes
1answer
26 views

Can a hydra get cancer?

Because hydras have immune systems, telomerase activity, and Piwi-piRNA like cancer cells I wonder if they can get cancer?
0
votes
0answers
11 views

Calculation of Nucleotides [on hold]

Following translation, the alpha polypeptide chain of haemoglobin, α-globin, undergoes modification. During this modification, the first amino acid is removed, leaving 141 amino acid residues. How ...
1
vote
1answer
28 views

Which one is bigger prostate or seminal vesicles?

I can't understand this by looking at these photos, especially the last picture makes me more doubtful. Another question is, what is the biggest organ in the male reproductive system? (Note that the ...
2
votes
0answers
22 views

Regulation of LBD33 genes Arabidopsis. If LBD 33 gene is up-regulated by auxin then why does expression decrease when increasing auxin concentration?

I have a question regarding the regulation of lateral boundary domain genes in Arabidopsis (specifically LBD33). I am an undergraduate student trying to understand the results of a lab where I measure ...
0
votes
2answers
29 views

Is oxygen's paramagnetism biologically relevant?

It seems our most common everyday O2 molecule happens to be a paramagnetic one (see https://en.wikipedia.org/wiki/Oxygen). But, does this have a biological relevance as well?? (It seems to me the ...
1
vote
0answers
12 views

What's a reasonable time constant for a mathematical model of a neuron?

Background I've been studying various mathematical models of neurons. So far I've covered the classic Hodgkin-Huxley model (to describe the potential difference of a single neuron) and the integrate ...
2
votes
0answers
35 views

Insect ID, Ecuador

Picture was taken in the Ecuadorian Amazon in January 2019, during the day, elevation about 300 meters. The size was not recorded but might be no bigger than a housefly judging from the photo. It ...
1
vote
1answer
23 views

Why is a urea solution hypotonic relative to RBC?

If I place a RBC in 0.5M urea we see haemolysis. My textbook says that "the solution is hypotonic. Urea enters the RBC down it's concentration gradient. Water follows the movement of urea by osmosis. ...
0
votes
0answers
11 views

Inequality factor for similarity sensitive diversity

In a research article, Lou Jost has introduced the concept of inequality factor. The paper is "The relation between evenness and diversity", published in 2010. Inequality factor allows an intuitive ...
0
votes
0answers
8 views

How does Hayflick limit relate to cellular senescence

If the Hayflick limit says that there are a maximum of around 60 cell division before a cell becomes senescent, I assume this is because the cell looses length of telomere. But how can this be if, for ...
1
vote
1answer
42 views

Hardy Weinberg Clarification

So I am taking an introductory Biology Course and I was recently introduced to the idea of Hardy Weinberg Equilibrium. I wanted to find out why exactly we calculate the frequencies of alleles in the ...
-2
votes
0answers
24 views

Does someone know what kind of fish this is?

Fish its little about inch and half I would like to know what kind of fish is it and thanks in advance
4
votes
2answers
33 views

How do transgenic transformations cause off-target phenotypes?

I read that transgene insertions can cause off-target mutations that result in a phenotype being overly ascribed to the transgene, e.g. the increase of lifespan being ascribed to Sir2 overexpression (...
0
votes
1answer
39 views

Is there a data base, tool or method I can use to find out which of my genes code for cytokine receptors?

I have a list of over 600 differentially expressed genes from my single cell RNA seq data analyses. I want to proceed to find out which of my genes code for cytokine receptors so that I can show on a ...
1
vote
0answers
8 views

'Terminal' and 'lateral' apical buds. Monopodial and sympodial branching

Macroscopically, it seems to me that the difference between 'lateral' apical buds and 'terminal' apical buds and monopodial and sympodial branching is often rather superficial, if not random. ...
-1
votes
0answers
11 views

What determines if a bacteria has an F-plasmid? Are F-plasmids the only plasmids shared between bacteria?

If I’m designing an expierment to study bacterial concergation (while adding a plasmid of my choice to the bacteria), how do I know the bacteria I’m using has an F-plasmid (or can transfer my ...
-1
votes
0answers
29 views

cancer pedigree homework: risk of inheriting BRCA2 mutation [on hold]

The proband was diagnosed with ovarian cancer and was tested postive for BRCA2 mutation. I want to know what is the risk of her sister inheriting this mutation? How do you work that out? Since BRCA2 ...
0
votes
0answers
18 views

Design of a E. coli medium [on hold]

I'm trying to solve this problem, but I cannot seem to do figure it out. The problem is: You are supposed to design a medium for growth of E. coli with glucose as carbon source. The wanted final ...
-2
votes
0answers
27 views

Doping a Cheetah (2 part question) [on hold]

For this, we must assume that we are able to test the cheetah under laboratory conditions. 1) If we were to give a cheetah growth hormones and EPO, what kind of gains would we expect to see in terms ...
2
votes
1answer
29 views

What happens to Bacteria at a low pH?

I am conducting an experiment on how different pH levels effect the growth of E.coli. After researching, it is predicted that the most acidic pH level (pH 2) will be most effective at killing (or at ...
4
votes
1answer
57 views

can you tell me what kind of animal this is?

I found this skull over 2 years ago and i have been unable to find another like it or even come across someone who knows what it is. i live in south mississippi and the animal it came from looked like ...
0
votes
0answers
12 views

Immunity rejection and accept of organ [duplicate]

When blood is donated or received why WBC does not act or it does not rejection but it acts when transplant of organ occurs
5
votes
1answer
160 views

Do chaperone proteins misfold?

If molecular chaperone proteins assist in the folding process of other proteins and misfolded proteins, can chaperone themselves misfold since they are also proteins? What would happen if chaperones ...
0
votes
0answers
20 views

Does cataract condition cause red film when sun is shining?

Since two years ago I have a red film in my field of vision when the sunlight (or a white spot) is at the border (or even lightly behind) of the vision field, the red color is especially obvious at ...
3
votes
0answers
34 views

Any Ideas what this insect might be?

A year ago my family and I were in Tanzania on vacation. Upon returning to our home in Alaska my wife found a small stowaway in her luggage. Feeling sorry for the poor creature we put it in a ...
1
vote
0answers
29 views

Double vision from one eye? [on hold]

I have recently experienced getting double vision out of one eye. When I cover my dominant right eye the double vision corrects and become a solid image? I am not asking if it is possible to get ...
3
votes
1answer
56 views

Is this bedbug or book louse?

Hello everyone. I have been seeing tiny critters like this one in bed and I started to worryif they are bed bugs. Although they seem different in appearance as well as the fact that they don't seem to ...
2
votes
1answer
27 views

When does DNA replicate actually?

I read on Wikipedia that when the cell enters prophase during mitosis , the DNA has already been duplicated , that is the DNA is replicated in the chromatin form , but here I see the picture which ...
-2
votes
0answers
31 views

Does anyone have R code for analyzing skin conductance data? [on hold]

I am looking for code that takes the raw data and separates the tonic and phasic responses and identifies peaks and their properties. Thank you!
2
votes
1answer
21 views

Analysis of dynamic connectome data?

I have heard about existence of full brain connectome data of some worms or fishes. I have heard about GEVI - genetically engineered voltage indicators - that allow to see voltage data at subcellular ...
3
votes
1answer
24 views

How can sodium and potassium from burned organic matter (ashes) reenter the ecosystem?

If you thoroughly burn something you end up with bunch of oxides and hydroxides, as far as I know. Sodium and potassium hydroxides are plentiful in ashes, which is why lye was created by soaking ...
-2
votes
0answers
17 views

Doubt in a question on ecological succession [on hold]

How many of the following functional component of ecosystem change during ecological succession ? Dominance, Energy usage efficiency, Species diversity, Vegetation, Stratification, Nutrient ...
1
vote
0answers
10 views

Where does mycelium growing in wood get oxygen?

As per title, where does mycelium growing in wood get oxygen ? Thanks.
-2
votes
0answers
8 views

How to open blocked receptors that deny all agonists [on hold]

If an agonist has little or no effect, from ibuprofen, alcohol, local anesthetic Is there a way to alter the receptors into receiving a the chemical signal?
1
vote
0answers
38 views

Remove the baby from the womb

Is it possible to remove the baby from the womb of a mother to cure the baby of a tumor and putting it back in the womb to be delivered naturally (the baby is 6 months)
1
vote
1answer
34 views

Is it possible to estimate tree height from stump/breast diameter and species?

Kindly pardon my poor knowledge, my area of expertise is not biology. I am currently working on project where I have access to tree's stump and breast diameter and its species. We are trying to ...
2
votes
1answer
26 views

Methods for microbial identification in soil

I'm trying to perform a survey of the life in a soil sample. I want to know what species of bacteria, fungi, and other organisms are in it. I've heard that ITS sequencing and 16S rRNA sequencing are ...
4
votes
2answers
44 views

Why is ATP synthase sometimes referred to as ATPase?

Quite a few times I have seen the term ‘ATPase’ used for what I would consider ATP synthase. For example, my text has: “The phosphorylation of ADP to ATP is also catalysed by the enzyme ATPase.” I ...
2
votes
1answer
15 views

Can someone help me interpret these charts on fluorescent polarization?

I have to present an article about binding designed proteins to fentanyl for my biochem class; I understand everything except how to interpret these charts on fluorescence at the very top of Figure 2a:...
5
votes
1answer
38 views

Do animals with their eyes ~180 degrees apart have depth perception?

Lots of animals have their eyes more on the side of their head, like an octopus or a parrot. Are animals with eyes more on the side able to tell the depth of objects at different distances? It seems ...

15 30 50 per page