Is This an Example of Passive Or Active Transport? ______
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Scenario 1
Blood passing through the brain is constantly monitored. If the amount of water in the blood falls below normal, a hormone (chemical message) is released into the blood, which passes through the bloodstream to the kidneys. The hormone signals to the kidneys that more water is needed in the blood. Water then diffuses into the blood, so the water content of the blood remains constant. As a result the urine becomes more concentrated.
Show with a large diagram on poster paper, the process occurring to the blood cell in this scenario. Identify the net direction of water.
Is this an example of passive or active transport? ______
Is this an example of diffusion or osmosis? ______
Is the blood cell hypotonic or hypertonic to the body’s fluids before the brain sends a signal to the kidneys? ______
What might a person do to cause the water content of their blood to fall? ______
Scenario 2
Blood carries oxygen from your lungs to the rest of your body. As you inhale, air with a high oxygen concentration is drawn into small sacs within your lungs, called alveoli. The air in the alveoli has a higher oxygen concentration than the blood in the tiny blood vessels surrounding the alveoli. Oxygen will diffuse out of the alveoli and into your blood.
Show with a large diagram on poster paper, the process occurring to the blood cell in this scenario. Identify the net direction of oxygen.
Is this an example of passive or active transport? ______
Is this an example of diffusion or osmosis? ______
Does this process require cellular energy? ______Scenario 3
Your body contains three types of white blood cells that do a variety of things to keep you healthy. The most important white blood cell is a granulocyte. When a bacteria cell enters the body, often at the site of a scratch or more serious skin injury, the granulocyte attacks the bacteria cell and engulfs it. The pus that accumulates at the site of an infection consists of mostly these white blood cells.
Show with a large diagram on poster paper, the process occurring to the blood cell in this scenario. Identify the net direction of the bacteria cell.
Is this an example of passive or active transport? ______
What is this process of engulfing a cell called? ______
What organelle will the bacteria cell be transported to within the cell to be destroyed? ______
Scenario 4
Your skin is made up of two layers, the epidermis and the dermis. The epidermis produces an oily protein that repels water. When you soak in the bathtub for a long time or swim for a long time, the protein is sloughed off. As a result, your skin cells begin to swell from the excess water, and they look wrinkled.
Show with a large diagram on poster paper, the process occurring to the skin cell in this scenario. Identify the net direction of water.
Is this an example of passive or active transport? ______
Is this an example of diffusion or osmosis? ______
Is the solute content in the skin cell hypotonic or hypertonic to the water in the tub or pool? ______