Question

select the one true statement.
vacuoles direct cell activities by sending instructions to different parts of plant
cells.
the cell membrane of an animal cell uses sunlight to make sugar.
in an animal cell, the endoplasmic reticulum helps ribosomes build proteins.

Explanation:

• Vacuoles store substances in plant cells, not direct cell activities. The nucleus directs cell activities.
• Animal cells do not have chloroplasts (which use sunlight to make sugar). Chloroplasts are in plant cells.
• In an animal cell, the endoplasmic reticulum (especially the rough endoplasmic reticulum which has ribosomes attached) helps ribosomes build proteins.

Answer:

In an animal cell, the endoplasmic reticulum helps ribosomes build proteins.