Which of the following statements about transduction in the photoreceptors of the eye are correct?
1) Light photons cause the conversion of 11-cis-retinal to all-trans-retinal.
2) Light stimulus results in depolarisation of photoreceptors.
3) Transducin results in the release of phosphodiesterase.
4) Voltage-gated calcium channels are opened in response to a light stimulus.
5) The neurotransmitter which is released from photoreceptors is glutamate.