Question

1. what is the purpose of the cell wall in plant cells? a. to provide structural support and protection. b. to produce proteins. c. to store waste materials. d. to regulate the passage of substances. 9. what is the primary function of organelles in eukaryotic cells? a. to store the cells genetic information. b. to control the movement of substances in and out of the cell. c. to provide structural support to the cell. d. to perform specialized tasks within the cell. 10. what is the primary function of the cell membrane in a eukaryotic cell? a. synthesizing proteins. b. storing the cells genetic material. c. producing energy for the cell. d. regulating the passage of substances in and out of the cell. 11. what is the primary role of the mitochondria? a. storing proteins. b. packaging lipids. c. breaking down waste materials. d. generating atp through cellular respiration. 12. what does the mitochondria do within the cell? a. store genetic information. b. synthesize proteins and lipids. c. produce energy (atp) through cellular respiration. d. control the entry and exit of substances. 13. what structural feature of the cell membrane allows it to be selectively permeable? a. the presence of channels and pores. b. the double - helix structure of dna. c. its rigid outer layer. d. the fluid mosaic structure. 14. which of the following structures are not found in prokaryotic cells? a. cytoplasm. b. nucleus. c. ribosomes. d. cell membrane.

Explanation:

1. The cell - wall in plant cells provides structural support and protection. It is a rigid layer outside the cell membrane.
2. Organelles in eukaryotic cells perform specialized tasks. For example, mitochondria produce energy, chloroplasts conduct photosynthesis etc.
3. The primary function of the cell membrane in a eukaryotic cell is to regulate the passage of substances in and out of the cell, maintaining homeostasis.
4. The primary role of the mitochondria is to generate ATP through cellular respiration, which is the energy - currency of the cell.
5. Mitochondria produce energy (ATP) through cellular respiration. They are the power - houses of the cell.
6. The presence of channels and pores in the cell membrane allows it to be selectively permeable, controlling the movement of substances.
7. Nucleus is not found in prokaryotic cells. Prokaryotic cells have a nucleoid region instead of a membrane - bound nucleus.

Answer:

1. a. To provide structural support and protection.
2. d. To perform specialized tasks within the cell.
3. d. Regulating the passage of substances in and out of the cell.
4. d. Generating ATP through cellular respiration.
5. c. Produce energy (ATP) through cellular respiration.
6. a. The presence of channels and pores.
7. b. Nucleus