New answers tagged

0

I found your second reference online, which says Hydrogen bonds are disrupted by the process of partial unwinding which induces structural changes such as loosening of base–base interaction, base tilting and destabilization of the DNA double helix leading to DNA denaturation [17]. The destabilization was due to most probable binding sites in DNA such as Cu2+...


0

Given recent advances in AI related neuroscience, I can easily imagine a future where it is possible to decode thoughts and impressions. In fact, we are already nearly there. It seems like the limitation is not the decoding of memories, but their detection or measurement: While you are seeing an image and the brain actively is working on it its perception, ...


1

Although any number estimation would be inaccurate, I can think on two factors that can influence the count. Cells location: Pain is trigger when specialize cells (Nociceptors) fires action potentials. The density of those nociceptors is greater in the tip of your finger than in your back. So the number of cell damage that trigger the pain would be ...


1

there is a bit more to it actually, The Henle -loop only occurs in birds and mammals, giving them the ability to make the urine hyperosmotic in comparison to their blood, other vertebrates can't do this. how does the henle loop achieve this further concentration of urea(= more resorption of H2O)?: -> by using the physical principle of countercurrent ...


1

Because it's held together by muscles, tendons, and ligaments. (image from Wikipedia.) It's somewhat complicated how all these parts contribute to holding the joint in place because it depends on the position of the joint. E.g. Shoulder muscle forces are usually powerful stabilizers of the glenohumeral joint, especially in mid-range positions when the ...


1

A good number of vegetables and fruits have >90% water contents; this includes cucumber, watermelon, etc. Even oranges, broccoli etc. have >80%. So it would not be hard to have enough water intake if the veggie/fruit/smoothie diet is not restricted to particular fruits or veggies. Slightly less detailed, but more reliable source agrees:


2

This paper appears to be a history of the discovery of B/T differentiation and the role of the thymus. I believe that you should find a number of important references therein. It describes specifically a series of publications in the 1950s and 1960s that may be relevant (section "Identification of T and B cells"), such as this one by Gowans.


3

Short answer The structural anatomy of the cerebral cortex is closely related to its functionality. The cortex is a thin sheet of only a few cell layers deep. Expansion of processing power requires enlargement of the surface area of this sheet, and simply increasing it's volume doesn't help. As a consequence, gyri and sulci developed during evolution to ...


4

Actually it can. See https://clinicalhypertension.biomedcentral.com/articles/10.1186/s40885-016-0052-y for instance: Deleterious effects of HRE [hypertensive response to exercise] on structure and function of left ventricle (LV) has been reported consistently. Theoretically, individuals with HRE would be exposed to abnormally high pressure loads to left ...


1

Yes absolutely. Body temperature is associated with basal metabolic rate which is linked to life-span/body mass. Keeping your body at temperature is responsible for the majority of your caloric burden majority of your caloric burden, and having a lower resting temperature would mean you require fewer calories to survive. Higher body temps are thought to have ...


0

A factor to add is also whiskers... most mammals have whiskers leftover from nocturnal sensing and fast-bite-reactions. For example felines that don't see well from upclose can use their whiskers in the final phase of an attack. The age of mammal facial hair being up to 80 million years ( rodent carnivora divergeance ), the genes are more deeply encoded as ...


1

Flaviviruses are an important group of virus, including yellow fever, dengue, zika, west nile, japanese encephalitis, tick-borne encephalitis. These viruses spread through the human population via arthropod vectors. The vectors have separate tubes for pulling blood in and injecting saliva; so in order to infect a vertebrate, the virus has to get from the ...


Top 50 recent answers are included