8. Outline the major connections between the eye and brain, indicating the interaction of neural tracts at the optic chiasm, relay stages at the LGN, and optical projections to the occipital lobe of the brain.

Explanation:the optic nerve is a cable -like grouping of nerve fibers it connect and transmits visual information from the eye to the brain. In human eye it receives light signal from about 125million photoreceptor cells referred to as rods and cones through 2 intermediate neuron types , bipolar and amacrine cells.

Eye is one of the most important organ of the body that enable the individual to see the different things. The sensory neuron receives the stimuli and interpret the information to the brain.

The optic nerve detects the signal that has been refracted by the retina. The signal is then transferred to the optic chiasm. The signal is received by the thalamus specifically at the Lateral Geniculate Nucleus. This results in the creation of retinotopic map. The signal is then received by the occipital lobe at the visual cortex. This is determined as optical projections. The signal was then detected by the temporal lobe and by the parietal lobe. This helps in the identification of the object.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products