Why is this not an isomer of hexane?

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o

All motion is caused by force? true or false