Answer all thirteen questions!
1. Which cell component is connected to your immune system? .
2. What is the relationship between Ribosomes and Rough and Smooth ER?
3. Which organelle is usually considered the powerhouse of the cell?
4. What does homeostasis mean?
5. Compare Vesicles and Lysosomes.
6. What part of the body’s control mechanism is responsible for generating a pain
signal?
7. What component of the cell contains the organelles and is composed of cytosol?
8. What part of the body’s control mechanism is responsible for reflexive actions?
9. What is the difference between a negative feedback loop and a positive feedback
loop? Give an example of each. (3 pts)
10. What is the main function of Rough Endoplasmic Reticulum RER and the Golgi
apparatus?
11. What is a good example of homeostasis?
12. What component of a human body cell functions like a cell wall in a plant cell?
13. What part of the body’s control mechanism is responsible for analyzing signals sent
by nerves to the brain
1. The cell component connected to the immune system is the lysosome.
2. Ribosomes are responsible for protein synthesis, and they can be found attached to the rough endoplasmic reticulum (RER). The RER is responsible for protein folding and transport. The smooth endoplasmic reticulum (SER) is involved in lipid metabolism.
3. The powerhouse of the cell is the mitochondria, where cellular respiration takes place to produce energy in the form of ATP.
4. Homeostasis refers to the ability of an organism to maintain internal stability and balance despite external changes.
5. Vesicles are membrane-bound sacs that transport molecules within the cell, while lysosomes are organelles containing digestive enzymes to break down waste materials.
6. The generation of a pain signal is controlled by the nervous system.
7. The cytoplasm contains organelles and is composed of cytosol.
8. Reflexive actions are controlled by the spinal cord and do not involve conscious thought.
9. A negative feedback loop works to maintain stability within a system by reversing any deviations from a set point. An example is the regulation of body temperature. A positive feedback loop amplifies a response, leading to an increase in the original stimulus. An example is childbirth, where contractions increase in intensity and frequency.
10. The main function of the Rough Endoplasmic Reticulum (RER) is protein synthesis and folding, while the Golgi apparatus processes and packages proteins for transport.
11. A good example of homeostasis is the regulation of blood glucose levels. When blood sugar levels rise after a meal, insulin is released to bring levels back to normal. When blood sugar levels drop, glucagon is released to raise levels.
12. The plasma membrane of a human body cell functions similarly to the cell wall in a plant cell, providing structure and protection.
13. The brain is responsible for analyzing signals sent by nerves to determine appropriate responses.