Retina is the area at the back of eye where image is formed and it is the layer of photoreceptors and other neurons.neurons transmit this image to brain.
HOPE IT HELPS YOU '_'
The two cells of the similar shape, and size have different levels of the ongoing metabolic activity. On one hand, the cell a is metabolically quiet, which means that no energy consuming chemical reactions are taking place in this cell. On the other hand, the cell b is actively consuming the surrounding oxygen. In this scenario, the oxygen will more quickly diffuse into the cell b because the diffusion gradient for oxygen in this cell is steeper than in the cell a.
Hence, the blanks can be filled with 'b and the diffusion gradient is steeper' respectively.
Answer:
The parasite that causes malaria in humans, is located in the liver cells where it then multiplies then transfers into the red blood cells.
B) Liver
Hope this helps ;)
