With shortest row at the front to the tallest row at the back

Randomly in height

With shortest ones at the sides and tallest ones in the middle of the pack

With tallest ones at the sides and shortest ones in the middle of the pack

With tall ones at the front, short ones in the middle, and intermediate sized ones at the back

House the stereocilia that allow ion movement and ultimately result in activation of nerve fibres to the brain that signal sound

Amplify sound energy

Provide an active energy-dependent process that improves frequency selectivity along the cochlear length

Provide the specialised fluid that makes up the cochlear partition

Increase the mass of the basilar membrane to allow for graded passive frequency tuning along the cochlear length

all of the choices

chemoreceptors 

mechanoreceptors 

photoreceptors 

nocireceptors 

House the stereocilia that allow ion movement and ultimately result in activation of nerve fibres to the brain that signal sound

Provide an active energy-dependent process that improves frequency selectivity along the cochlear length

Produce the specialised fluid that makes up the cochlear partition

Attach to the nerve fibres to the brain that carry information about sound

Increase the mass of the basilar membrane to allow for graded passive frequency tuning along the cochlear length

Fluid in the middle ear

Wax in the external auditory canal

Disruption to the G protein cascade system

Damage to the auditory nerve

Failure to break down cGMP

Sound energy would never arrive at the round window of the cochlea

Middle ear pressure would drop

Sound energy would never cause vibration of the cochlear partition

Loud sounds woiuld be heard as being too loud

Soft sounds could not be heard well or at all

Allow stereocilia to allow passage of Na⁺ ions into the hair cells

Allow stereocilia to bend from side to side during vibration of the partition

Keep the stereocilia tight and erect

Connect up ion channels to the sides of taller stereocilia

Act like a hair tie to hold the stereocilia in place