2.1.6 how organelles work together in cells

Question 1

step 1 for making/secreting a protein

Answer 1

the gene with coded instructions for the protein (housed on chromatin in nucleus) is transcribed into length of mRNA

Question 2

step 2

Answer 2

many copies of mRNA are made & pass out of pores in nuclear envelope to ribosomes

Question 3

step 3

Answer 3

at ribosomes, instructions are translated & the protein molecules are assembled

Question 4

step 4

Answer 4

protein molecules pass into cisternae of RER & along these hollow sacs

Question 5

step 5

Answer 5

vesicles w/ the protein inside are pinched off from RER & pass (via microtubules & motor proteins) to golgi apparatus

Question 6

step 6

Answer 6

vesicles fuse with golgi apparatus, where the protein molecules may be modified for release

Question 7

step 7

Answer 7

inside vesicles pinched off from golgi apparatus, molecules pass to plasma membrane

Question 8

step 8

Answer 8

vesicles & plasma membrane fuse & protein released outside cell (exocytosis)

Question 9

what type of process in exocytosis

Answer 9

active - requires energy