Gene expression products are packaged and modified by the addition and deletion of functional groups in this structure of the cell.

Golgi apparatus

Explanation:

Once the protein products are packaged in the endoplasmic reticulum into vesicles that fuse to the Golgi apparatus, these protein products are modified by enzymes. These changes are called post-translational modifications and include the addition of carbohydrates, lipids or some other functional groups. All these modifications are key for protein functionality. After this process is concluded, functional proteins are packaged into vesicles and released to their final destination inside or outside the cell.

because the light is a great source of energy for the plants to survive. (i hope this )

a. by using fur or clothes to trap heat energy near the body