BIOLOGY-TOPIC 3

Question 1

Describe protein transport (remember 9 points)

Answer 1

.DNA transcribed to MRNA in nucleus
.MRNA leaves the nucleus
.protein from ribosomes enters the rough E.R
.Protein moves through the rough E.R
. protein is pinched off in to a vesicle
.vesicles fuse to form the flattened sacs of the Golgi apparatus
.proteins are modified in the Golgi apparatus
.The modified protein is pinched of in to vesicles
.the vesicle fuses in to the cell membrane releasing the modified protein