Consider this animal cell. a) to temporarily store water, waste products, food, and other cellular material.

b) to produce proteins for the cell.

c) to move proteins and other substances through the cell.

d) to contain digestive enzymes that break down waste material and debris in the cell.

This organelle labeled is called the rough endoplasmic reticulum. It consists of channels that interconnect. On the outside, the rough endoplasmic reticulum contains ribosomes that play a role in protein synthesis

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.