Podcast
Questions and Answers
What is the main function of the respiratory system?
What is the main function of the respiratory system?
- Trapping dust, allergens, and pathogens
- Production of sounds through the voice box
- Exchange of oxygen with carbon dioxide (correct)
- Delivery of oxygen to the cells
Which cell component stores water, salts, carbohydrates, and proteins?
Which cell component stores water, salts, carbohydrates, and proteins?
- Cell membrane
- Vacuole (correct)
- Cell wall
- Lysosome
What happens when the diaphragm and intercostal muscles relax?
What happens when the diaphragm and intercostal muscles relax?
- Exchange of oxygen with carbon dioxide in the alveoli
- Exhalation occurs (correct)
- Inhalation occurs
- Lungs relax and decrease in volume
Which of the following is a characteristic of veins?
Which of the following is a characteristic of veins?
What is the function of the circulatory system?
What is the function of the circulatory system?
In the process of diffusion, what is the characteristic of a hypertonic solution?
In the process of diffusion, what is the characteristic of a hypertonic solution?
Which organelle is responsible for the process of photosynthesis in plant cells?
Which organelle is responsible for the process of photosynthesis in plant cells?
What is the main function of the rough endoplasmic reticulum (ER) in a cell?
What is the main function of the rough endoplasmic reticulum (ER) in a cell?
Which statement best describes the difference between plant and animal cells?
Which statement best describes the difference between plant and animal cells?
What occurs during dynamic equilibrium in the process of diffusion across a membrane?
What occurs during dynamic equilibrium in the process of diffusion across a membrane?
Study Notes
Respiratory System
- The main function of the respiratory system is to bring oxygen into the body and remove carbon dioxide.
Cell Biology
- Vacuoles are the cell components that store water, salts, carbohydrates, and proteins.
Muscular System
- When the diaphragm and intercostal muscles relax, the chest cavity volume decreases, and the lungs deflate.
Circulatory System
- One characteristic of veins is that they have one-way valves that prevent backflow of blood.
- The function of the circulatory system is to transport oxygen and nutrients to cells and remove waste products.
Diffusion
- In a hypertonic solution, the concentration of solutes is higher outside the cell than inside, causing water to leave the cell.
- During dynamic equilibrium in the process of diffusion across a membrane, the rate of solute movement into the cell equals the rate of solute movement out of the cell.
Plant Cells
- Chloroplasts are the organelles responsible for the process of photosynthesis in plant cells.
Endoplasmic Reticulum
- The main function of the rough endoplasmic reticulum (ER) in a cell is to synthesize and transport proteins.
Cell Comparison
- Plant cells have a cell wall and chloroplasts, whereas animal cells do not have these features.
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Description
Test your knowledge of diffusion in biology, including the concepts of hypertonic, hypotonic, isotonic, and dynamic equilibrium. Learn about the movement and concentration of solvents and solutes across a membrane, and the differences between plant and animal cells.
