Cell Biology Answers

Why is the concentration of urea higher in the urine than in the filtrate?

The processes that result in the glucose concentrations?

When a nerve impulse passes from one neuron to another, it causes the release of neurotransmitter from versicles a fused to the membrane of the synaptic knob. Neurotransmitter is released into the synaptic  cleft and then binds to receptor on the ion  channel. How does this lead to setting up an action potential in the next neuron?

The immune systems Primary role is to defend against pathogens. For this to be affective the immune system must be able to recognise cells that belong to the body and cells that do not.

What is the mechanism that the immune system uses to distinguish between body cells and potential pathogens? 

why is this mechanism means that patients who receive and organ donation require immune suppression drugs?

Why is the concentration of urea higher in the urine than in the filtrate?

The processes that result in the glucose concentrations?

When a nerve impulse passes from one neuron to another, it causes the release of neurotransmitter from versicles a fused to the membrane of the synaptic knob. Neurotransmitter is released into the synaptic  cleft and then binds to receptor on the ion  channel. How does this lead to setting up an action potential in the next neuron?

The immune systems Primary role is to defend against pathogens. For this to be affective the immune system must be able to recognise cells that belong to the body and cells that do not.

What is the mechanism that the immune system uses to distinguish between body cells and potential pathogens? 

why is this mechanism means that patients who receive and organ donation require immune suppression drugs?

The combined effects of porosity and strain rate on bone strength have been expressed by the following equation: where is the relative density. If the fracture stress of compact bone at 10 −3 s −1 is equal to 120 MPa, what is the fracture strength of cancellous bone with 50 vol.% porosity at 10 s −1?

What cell organelles would you expect to occur in large numbers in a cell with the following function?

Function: A plant cell that produces, modifies, and releases oil on the surface of a leaf.