Recent content by jayadds

Hi all, I know that albumins function as a transport protein for drugs, hormones and fatty acids. My question is, what happens to these albumins when they are saturated? Do they slowly release their bound components over time? Or are the albumins eliminated from the body so that new ones are...

Hi all, I was just wondering, what is the difference between non-adrenergic non-cholinergic (NANC) transmitter and co-transmitter in the synaptic communication between neurons? In particular, what are their different functions? Many thanks, Jay

Hi all, To be more specific, do the following factors increase the time taken for a drug to reach steady-state? Increased frequency of drug administration Increased dosage of drug administration If not, please explain why that is the case. Many thanks, Jay

Hi all, I was just wondering, does the ionised form of a drug produce a pharmacological effect? I know that an ionised drug is lipid-insoluble so it cannot traverse across the membrane. However, my question is, what happens to them if they remain in the gastrointestinal tract? Does it still...

Hi all, I was just wondering, are there MHC I molecules on the surface of a macrophage? According to my textbook, this is the rule: All nucleated cells have MHC I Dendritic cells, macrophages and B cells have MHC II Can macrophage be considered as a nucleated cell? If so, does that...

Hi all, I was just wondering, what stimulus activates protein synthesis? I already know the steps of protein synthesis but is there a particular mechanism that triggers the RNA polymerase to start transcription? In other words, how does the body know when to produce proteins? Is it possibly...

Hi all, As stated above, what is white matter of the brain? Now, I have already read the standard definition for the term: White matter is composed mostly of myelinated axons. However, I seem to have difficulty understanding that concept. Is it trying to say that white matter is ONLY...

Thank you for confirming it with me. I also had a value that was considerably lower as well. The answer may be incorrect then.

As asked above, what is mole fraction solubility? From what I've been taught, it is the following equation: mole fraction solubility = (number of moles of solute)/(number of moles of solute + number of moles of solvent) Is that even correct? In actual fact, there's a question that deals with...

Hi, Can someone please explain the difference between ΔH and q? I know that ΔH represents enthalpy of heat whereas q represents quantity of heat. Surely, there must be a difference between them since quantity and enthalpy are different measurements. The thing that I'm confused about is...

Thanks for a helpful answer :) However, would a child on a swing going back and forth be considered a vibrating system? Or does it have to be vertical oscillations (such as your truck example) in order for it to be a vibrating system?

So as the title says, what is a vibrating system? Does it only apply to sound waves? Please give five examples of everyday vibrating systems just to contextualise the concept for me. Many thanks

Hi, I was just wondering, is mechanical energy conserved when two cars of equal mass and moving at equal speed collide head-on and in the process both come to rest? I'm inclined to say it isn't conserved because kinetic energy is converted into other forms of energy (e.g. heat and sound)...

However, given the situation that the bicycle does eventually go to REST as stated in the question, how can it go on forever? Would the momentum be conserved or not if the bicycle eventually goes to rest?

Hi, I just want to understand this concept a bit better. The law states that momentum is conserved when there is no external force acting on the system. Now consider this situation where two cars of equal mass and moving at equal speed collide head-on to come to rest. Would the...