Question

what distinguishes the rough endoplasmic reticulum (er) from the smooth er? a. the smooth er is involved in protein synthesis, while the rough er is not. b. the rough er has ribosomes attached, while the smooth er does not. c. the rough er synthesizes lipids, while the smooth er synthesizes proteins. d. the rough er stores dna, while the smooth er does not. what function do vacuoles serve in plant cells? a. synthesizing proteins. b. storing water, nutrients, and waste. c. breaking down cellular waste. d. generating atp. what is the primary function of vesicles within a cell? a. transporting materials between organelles. b. storing genetic information. c. synthesizing proteins and lipids. d. providing structural support. which organelle is known as the powerhouse of the cell? a. mitochondria. b. lysosomes. c. golgi apparatus. d. nucleus. what is the primary function of the cell membrane in a eukaryotic cell? a. synthesizing proteins.

Explanation:

1. The rough endoplasmic reticulum has ribosomes attached to its surface, which is what gives it a "rough" appearance, while the smooth ER lacks ribosomes.
2. In plant cells, vacuoles store water, nutrients, and waste products.
3. Vesicles primarily transport materials between different organelles within a cell.
4. Mitochondria are known as the powerhouse of the cell as they generate ATP through cellular respiration.
5. The primary function of the cell - membrane in a eukaryotic cell is to regulate the movement of substances in and out of the cell (not protein - synthesis).

Answer:

1. B. The rough ER has ribosomes attached, while the smooth ER does not.
2. B. Storing water, nutrients, and waste
3. A. Transporting materials between organelles
4. A. Mitochondria
5. (No correct option given in the provided choices as the main function is regulating substance movement, not protein - synthesis)