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 amnio acid sequence with the aid of ribosomes and enzymes.This polypeptides are subsequently packed into vesicles and transported to the golgi apparatus where they are further modified. The vesicle containing mature proteins buds off of the golgi and travels to and fuses with the plasma membrane where the protein is released into the extracellular environment.

BH

Related Biology A Level answers

All answers ▸

Describe how an atheroma may lead to a myocardial infarction.


Succinate is converted to fumarate by the enzyme dehydrogenase. This reaction can be inhibited by adding malonate. a) What are enzymes and what are their function? Use this information to explain how malonate acts as an inhibitor.


Explain the process that occurs from when the action potential reaches the pre-synaptic knob to transmission in the next neurone. (6 Marks)


Some patients suffer from high ventricular pressure. This causes fluid to build up outside the blood capillaries. Explain why? How does widening the blood vessels using drugs reduce blood pressure?