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How did viruses with the head, tail and tail fibers actually evolve? These viruses look more like machines than biological entities.
In the case of mammals like giraffes and koalas, is that bacteria common on the plants they eat so when a baby starts to try to stick something besides its mother's milk in its mouth, it can't diges
I'm looking find a cheat sheet for protein biology to stick on my desk to remind of some of the key principles of protein biology. I seem to remember the specific and complex principles in protein b
Assume a perfectly developed physical human body and anatomy in terms of size, dimensions and proportions. In theory, if I cut the body vertically into two exact halves from the center of the head d
The number of individuals constituting a population is called population size. Over time population size does not remain constant, it fluctuates to different extent over generations because of sever
The blood-volume of an organism is defined as the total volume of blood present inside that organism.
One of the tenets of Darwin's theory is the survival of the fittest, i.e. adaptation of features that allow a species to adapt better to its surrounding environment. I am wondering that given the ri
The popular term 'hot-blooded' means having an internally maintained average body temperature, which is generally more than that of the surroundings, despite the variation of the temperature outside
Looking at some more detailed codon usage tables, genes may be further clustered into three gene classes: Metabolic genes, highly expressed genes during exponential growth, and horizontal gene trans
Consider a simple spherical model cell that consists of cytoplasm and a plasma membrane. The cell's initial volume is 2 nL and contains 0.2 M protein. The cell is placed in a large volume of 0.05 M
The dinosaurs, mammoths, giant plants etc are known to be bigger than modern animals. I wonder why they had been lived and why they are not living now.
Whilst on a recent refresher course it was highlighted that when considering risk of exposure to infection from bodily fluids we should be aware of two distinct risk levels.
I would like to conduct a simple demonization experiment for some protein I'm collecting from cultured cells. My thought is, that if I'm running a non-reducing, denaturing PAGE gel, then removing b
I'm never going to run these type of experiments but I do need to have a good idea of their timescale.
We touched on intones and exons in my bio class, but unfortunately we didn't really talk about why Eukaryotes have intones. It would seem they would have to have some purpose since prokaryotes do no
I'm sure that everyone is familiar with the sensation commonly known as "butterflies in the stomach". It is commonly experienced during periods of anxiety or stress (e.g. before high stakes job inte
Lex A is an E. coli gene whose product regulates the transcription of certain target genes that are located at different positions in the bacterial chromosome.Identified target genes appear to be in
In pretty much every transformation protocol I've seen SOC medium is used to grow the bacteria for a short while after the transformation and before plating.
When humans get the common cold, a common symptom is a stuffy or runny nose. Question: Is that the body's immune response or is that the virus's doing?
When are population dynamics models useful? There seems to have been a lot of research about it, but how does it help? If I need data about how a population will evolve under what conditions, I need
I've used HPLC (high performance liquid chromatography) before (once, so I'm barely even qualified to know what it stands for) so I was surprised when my lab mate told me she would be using an alter
I'm trying to understand if the timing of human bowel movements in the morning is associated with the circadian rhythm, and can thus be used to make predictions about the circadian rhythm.
HIV compromises the human body to defend against infection. Yet people who are infected with herpes are at less risk of developing AIDS.
Question 1: Why is methyl cellulose used as a pharmaceutical excipient? Is it due to certain chemical properties?
According to the BBC documentary "Wild about Pandas", about half of panda birth results in twins. Question: Why do they have such a high probability compared to other mammals?