The correct statement among the options provided is:
2. In an animal cell, the endoplasmic reticulum helps ribosomes build proteins.
Explanation:
1. The cell membrane of an animal cell does not use sunlight to make sugar. This process occurs in plant cells through photosynthesis, where chloroplasts use sunlight to produce sugar.
2. In an animal cell, the endoplasmic reticulum (ER) does play a crucial role in protein synthesis. The rough ER, with ribosomes attached to its surface, aids in protein production by providing a platform for ribosomes to build proteins.
3. Vacuoles store nutrients, water, and waste in plant cells, not in animal cells. In plant cells, vacuoles serve various functions like storing nutrients, maintaining turgor pressure, and storing waste materials. In animal cells, lysosomes are more responsible for waste storage and digestion.
Therefore, the only true statement is that in an animal cell, the endoplasmic reticulum helps ribosomes build proteins.
