Assignment I.6 Identifying Parts of an Experiment.

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1. The images show red blood cells (RBCs) in three different solutions. A. Which image shows RBCs in normal blood plasma? B B. Which image shows RBCs in pure water? C C. Which image shows RBCs in a... very salty solution? A 2. What do you think is happening in images A and C? The salt is taking the water out of the blood cells, and in C the pure water is adding too much to the cells, so they burst. Gizmo Warm-up A paramecium is a one-celled organism that lives in ponds and other bodies of water. One of the challenges for a paramecium is to maintain a stable size and shape. On the Paramecium Homeostasis Gizmo™, turn on the Show labels checkbox. Try to determine the function of each of the labeled structures. 1. Through which two structures do you think food enters the paramecium? The oral groove and cell mouth 2. Which two structures contain DNA? Macronucleus and micronucleus 3. Which tiny structures help the paramecium to move around? Cilia 4. Which structure pumps out excess water and wastes? Contractile vacuole [Show More]

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