Answer the following question given this paragraph: Intermediate filaments have no role in cell movement. Their function is purely structural. They bear tension, thus maintaining the shape of the cell, and anchor the nucleus and other organelles in place. Figure 4.22 shows how intermediate filaments create a supportive scaffolding inside the cell. The intermediate filaments are the most diverse group of cytoskeletal elements. Several types of fibrous proteins are found in the intermediate filaments. You are probably most familiar with keratin, the fibrous protein that strengthens your hair, nails, and the epidermis of the skin. Q: What is the most familiar fibrous protein found in your body? Choices: - cellulose - Actin - Collagen - keratin A:
keratin

Answer the following question given this paragraph: Many birds learn to avoid eating monarch butterflies, like the one pictured in Figure below . Monarch butterflies taste bad and make birds sick. In this case, the behavior is learned because it is punished with a nasty taste and illness. Q: What type of butterfly do birds avoid eating since it makes them sick? Choices: - sphingidae - noctuidae - pyralidae - monarch butterflies A:
monarch butterflies

Answer the following question given this paragraph: Macroevolution occurs over geologic time above the level of the species. The fossil record reflects this level of evolution. It results from microevolution taking place over many generations. Q: Microevolution occuring and taking place over many generations results in? Choices: - fission - microinjection - recalibration - macroevolution A:
macroevolution

Answer the following question given this paragraph: Arteries are muscular blood vessels that carry blood away from the heart. They have thick walls that can withstand the pressure of blood pumped by the heart. Arteries generally carry oxygen-rich blood. The largest artery is the aorta, which receives blood directly from the heart. It branches to form smaller and smaller arteries throughout the body. The smallest arteries are called arterioles. Q: What is the name of muscular blood vessels that carry blood away from the heart? Choices: - tubes - Veins - Aorta - arteries A:
arteries