scilearner

I know it resembles a phosphate. Did a search it was very vague. Thanks

Hello quick question, Let's say there is tube with costant flow. It has ion channels surrouding it. X ion is absorbed from it, Y ion is secreted into it. When you increase flow rate does aborption of X decrease and secretion of Y increase. Is it because there is less time for reabsorption and more empty space for secretion. Just asking to clarify. Thanks

Red-capillary Purple- Basement membrane Blue-podocyte Hello everyone, Now my question is after something if filtered from the capillary how does it go to the podocyte. The basement membrane looks too thick with no pores to me, it seems to be blocking the passage of molecules. Thanks

Thanks for trying to help I found the answer. It is retinal combining with glycine of opsin in the visual cycle. You don't expect that to be a post translational modification, but it seems that any any chemical modification to a protein after it has been synthesized by the ribosome as a post-translational modification.

The question is give an example of post translational modifcation of a protei brought about my vitamin A. Now I checked my book which says vitamin A plays a role in vision, reproduction, growth, maintenance of epithelial cells. I checked the net as well couldn't find the answer . Can anyone tell me the name, so I can search info about it, some info would also be good if possible. Thanks

Thanks everyone I totally forgot about the pressure difference.

Hello everyone, From this pic it looks like air can go to oesophagus if you breathe from nose, but this is not happening. Is their some sphincter for this, or what? Thanks

What does that mean. Transfer of 1-carbon unit. What is a 1-carbon unit, are they referring to carbon number 1(according to nomenclature) of the molecule being transferred or a single carbon atom from the molecule is transferred? Can anyone explain. Thanks

But motor cortex is a small area. Ok if we take a coronal section from motor area, is it legs,arm, head. Is that what is happening?

Hello everyone, Ok in the cerebralcortex I saw a pic where there is upside down HAL, the brain controls head,arm, leg upside down. Now I don't know much about this area. I know there is only motor cortex, so are these areas referring to axons that are coming out of motor cortex and supplying these correspondinga areas. Thanks

When stimulated in the middle of axon, nerve conduction is bidirectioal. Now I know the andromic conduction stops at the first synapse. Is the reason for this, that there are no neurotransmitters in the body of a neuron, and more importantly no calcium channels there to activte them. Thanks

Hello everyone, I read many articles on this, but they all just say what it is and does not mentions how it occurs. This is a quote from another user not from here. 1. So if sodium channels go into locked position, does this increase the threshold for the stimulus. Let's say if previous threshold was -20, and then sodium channes got locked in, but threshold should stay the same right, it is just that there is a barrier to reach the previous threshold. 2. How do sodium channels get locked up, and does this decrease the frequency of action potential or inhibit? 3. How do we adapt to smell? 4. For receptor changes I'm assuming, that displacemnet of lamella in pacinian corpuscle reducing pressure as an example. Thanks

In acute blood loss both RBC and fluid is lost, so why doesn't haemotocrit stay normal. I know compensatory mechanism would increase the fluid, eg kidney. But red blood cell prodcution would take few weeks. Is that the reason haemotocrit decreases? Thanks

Ok I read in internet, that they stop the formation of prostaglandins which are required to make the stomach mucosa. How do prostaglanding affect stomach mucosa? Also since it is an anticoagulent it should make the bleeding worse. Thanks

Thanks

Thanks mate

This enables them to make haemoglobin. How? They still require mRNA, they don't have a nucleus. So how are ribosomes going to help? Thanks

Thanks for the reply but I think people with ashtma have less problem in inhaltion, but more problem in exhalation. So it is the resultant increase in carbon dioxide shifting the hameoglobin dissociation curve to the right that causes this. I posted this topic to clarify?

Hello, Ok I asked the biochem teacher and she said, there is muscle breakdown in DM, and then creatinine leaks out of muscle. Now my question is DM there is only breakdown of protein in muscles, muscle it self doesn't break apart right ( I mean if so muscle cells can not grow back right), so how does creatinine leak out if there is no damage to the muscle. The teacher is with the idea muscles grow back (teacher is not bad but I think she just doesn't know this point). So if anyone can tell me how creatinine increase in DM. That would be great. Thanks

As title suggests. Thanks

Thanks for the reply Yes I agree, I don't know why I corelated moral values with the neocortex???

Hello everyone, Can neocortex initiate emotional behaviour. Since it is outside limbic system, is it not considered part of limbic system. What exactly is this structure? Why only humans have this. Does this give us moral values. Thanks

During spinal shock, are all spinal reflexes gone, or only reflexes below the lesion. Thanks

Thanks for all replied

Hello everyone, Ok I read the definitions. I think it is how the brain learns from mistakes, and remembers stuff and rewires itself. But I would still like to get someone's else's opinion on this. Thanks