Q: Answer the following question given this paragraph: Figure 16.12 The arteries of the body, indicated in red, start at the aortic arch and branch to supply the organs and muscles of the body with oxygenated blood. The veins of the body, indicated in blue, return blood to the heart. The pulmonary arteries are blue to reflect the fact that they are deoxygenated, and the pulmonary veins are red to reflect that they are oxygenated. (credit: modification of work by Mariana Ruiz Villareal). Q: What does the blue color of the pulmonary arteries reflect? Choices: - they are lost - they are oxygenated - they are done - they are deoxygenated A:
A: they are deoxygenated

Q: Answer the following question given this paragraph: Flexion and Extension Flexion and extension are movements that take place within the sagittal plane and involve anterior or posterior movements of the body or limbs. For the vertebral column, flexion (anterior flexion) is an anterior (forward) bending of the neck or body, while extension involves a posterior-directed motion, such as straightening from a flexed position or bending backward. Lateral flexion is the bending of the neck or body toward the right or left side. These movements of the vertebral column involve both the symphysis joint formed by each intervertebral disc, as well as the plane type of synovial joint formed between the inferior articular processes of one vertebra and the superior articular processes of the next lower vertebra. In the limbs, flexion decreases the angle between the bones (bending of the joint), while extension increases the angle and straightens the joint. For the upper limb, all anterior-going motions are flexion and all posterior-going motions are extension. Q: What type of flexion is the bending of the neck or body toward the right or left side? Choices: - orbital - cylindrical - ventral - lateral A:
A: lateral

Q: Answer the following question given this paragraph: Friction is a force that opposes motion between any surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engine can cause the parts to wear out. Other examples of friction are illustrated in the two Figures below and below . You can see an animation showing how friction opposes motion at this URL:. Q: What force opposes a motion of a moving body? for example a car breaking on a road. Choices: - tension - vibration - thermal - friction A:
A: friction

Q: Answer the following question given this paragraph: Fossils may form in other ways. With complete preservation, the organism doesn't change much. As pictured below ( Figure below ), tree sap may cover an organism and then turn into amber . The original organism is preserved so that scientists might be able to study its DNA. Organisms can also be completely preserved in tar or ice. Q: Tree sap enclosing an organism in amber or an organism preserved in tar or ice are actually examples of what? Choices: - bones - corals - fuels - fossils A:
A: fossils