Replication enzymes have large structures, with separate subunits for different activities. Repair enzymes have much simpler structures.

TLS Online TPP Program

#Id: 1174

#Unit 7. System Physiology – Animal

Rods 

• Have low acuity or resolution

• are sensitive to low-intensity light

• receptors for night vision (scotopic vision)

TLS Online TPP Program

#Id: 1175

#Unit 7. System Physiology – Animal

Cones 

• Higher visual acuity

• responsible for vision in bright light (photopic vision) Participate in color vision

TLS Online TPP Program

#Id: 1176

#Unit 7. System Physiology – Animal

Inputs from eye to CNS: 

• Input from the rods 

• Input from the cones

TLS Online TPP Program

#Id: 1177

#Unit 7. System Physiology – Animal

Duplicity Theory 

The existence of these two kinds of input, each working maximally under different conditions of illumination

TLS Online TPP Program

#Id: 1178

#Unit 7. System Physiology – Animal

Axons of retinal ganglion cells 

Received and transduced information and carried to the CNS

TLS Online TPP Program

#Id: 1179

#Unit 7. System Physiology – Animal

Blind spot 

There are no visual receptors over the optic disk.