Top answers

What are the model structures associated with enzyme action?

There are two different models theorized by scientists in order to explain the performance of enzymes that you need to know about. The first is known as the 'Lock and Key hypothesis' where in the enzyme is a...
Answered by • Biology tutor
3742 Views

Explain the transmission of nerve impulses across a cholinergic synapse

When an action potential arrives at the pre-synaptic neurone, it causes a change in voltage due to the presence of positive Na ions. This causes voltage-gated Ca 2+ protein channels to open and allow calcium...
KS
Answered by Kimran S. • Biology tutor
5173 Views

Describe the structure and function of the cytoskeleton

An organelle found in all eukaryotic cells made of thin microfilaments of the protein actin and microtubules made of the protein tubulin. Transport is the key role where motor proteins drag organelles from o...
SL
Answered by Sakina L. • Biology tutor
9370 Views

What is the maximum resolution for a standard optical microscope?

200nm
SL
Answered by Sakina L. • Biology tutor
2965 Views

How do organelles work together to produce and release proteins from a cell

The nucleus contains all the DNA of a cell. RNA polymerase converts the DNA of the gene corresponding to the desired protein into RNA. The RNA is transported to the rough ER where it is translated into an am...
BH
Answered by Benjamin H. • Biology tutor
14102 Views