Question

multiple choice: choose the best possible answer. 1. both plant and animal cells have which of these organelles? a. cell wall b. mitochondria c. central vacuole d. chloroplasts 2. an example of a prokaryotic organism is a. human b. bacterium c. frog d. flower 3. the cell organelles that finish processing cell products are______? a. ribosomes b. mitochondria c. cell membrane d. golgi apparatus 4. prokaryotic cells do not have a. a cell membrane b. genetic material c. cytoplasm d. a nucleus 5. which part of the cell holds the genetic material? a. nucleus b. nuclelous c. mitochondria d. ribosomes 6. what organelle is responsible for breaking down and digesting substances in the cell? a. smooth er b. rough er c. vacuole d. lysosome 7. the thin, flexible barrier around a cell is known as the? a. cell wall b. nucleus c. central vacuole d. cell membrane 8. the main function for the cell wall is to do what? a. support and protect b. store dna c. help cell move d. make proteins 9. which of the following is a sac - like structure that stores water? a. golgi apparatus b. nucleus c. smooth er d. vacuole 10. which of the following is not found in all cells? a. dna b. chloroplasts c. cytoplasm d. mitochondria 11. the basic function of a cell wall in a plant cell is... a. to provide structural support for the cell. b. for dna organization. c. to digest materials within the cell. d. for energy production.

Explanation:

1. Both plant and animal cells have mitochondria which are the power - houses of the cell. Plant cells have cell walls, central vacuoles, and chloroplasts which animal cells lack.
2. Bacteria are prokaryotic organisms. Humans, frogs, and flowers are eukaryotic.
3. The Golgi apparatus finishes processing cell products. Ribosomes make proteins, mitochondria produce energy, and the cell membrane is a barrier.
4. Prokaryotic cells do not have a nucleus. They have a cell membrane, genetic material (in the form of a circular DNA), and cytoplasm.
5. The nucleus holds the genetic material. The nucleolus is inside the nucleus and is involved in ribosome synthesis, mitochondria produce energy, and ribosomes make proteins.
6. Lysosomes are responsible for breaking down and digesting substances in the cell. Smooth and rough ER are involved in protein and lipid synthesis, and vacuoles mainly store substances.
7. The thin, flexible barrier around a cell is the cell membrane. The cell wall is rigid, the nucleus contains genetic material, and the central vacuole is for storage.
8. The main function of the cell wall is to support and protect the cell. It is not for storing DNA, helping the cell move, or making proteins.
9. The vacuole is a sac - like structure that stores water. The Golgi apparatus processes proteins, the nucleus contains genetic material, and the smooth ER is involved in lipid synthesis.
10. Chloroplasts are not found in all cells. They are only in plant cells and some protists. All cells have DNA, cytoplasm, and most eukaryotic cells have mitochondria.
11. The basic function of a plant cell wall is to provide structural support for the cell. It is not for DNA organization, digesting materials, or energy production.

Answer:

1. b. mitochondria
2. b. Bacterium
3. d. Golgi apparatus
4. d. a nucleus
5. a. nucleus
6. d. lysosome
7. d. cell membrane
8. a. support and protect
9. d. vacuole
10. b. chloroplasts
11. a. to provide structural support for the cell.