If the full text is available you should see a Full Text icon:
From databases: If no full text icon is immediately visible, to get to the full text of an article or e-book click the button.
From UC Library Search: Click available links under View Online: Full text availability.
Click on the View Online link to access the full text if it is available.
To see if UC Berkeley has online access to a specific life sciences journal, you can enter the title in Journal Search: