(Q).
Q: Molecules move from an area of high concentration to an area of lower concentration until an what is met? Read this paragraph and choose the correct option from the provided answers: Molecules move from an area of high concentration to an area of lower concentration until an equilibrium is met. The molecules continue to cross the membrane at equilibrium, but at equal rates in both directions. Choices: - respiration - freezing point - oxidation - equilibrium A:
(A).
equilibrium

(Q).
Q: What type of flexion is the bending of the neck or body toward the right or left side? Read this paragraph and choose the correct option from the provided answers: 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. Choices: - orbital - cylindrical - ventral - lateral A:
(A).
lateral

(Q).
Q: The brain and spinal cord are part of what system, which serves as a control center? Read this paragraph and choose the correct option from the provided answers: The central nervous includes the brain and spinal cord. The brain is the control center of the nervous system. It controls virtually all mental and physical processes. The spinal cord is a long, thin bundle of nervous tissue that passes messages from the body to the brain and from the brain to the body. Choices: - primary nervous system - active nervous system - large nervous system - central nervous system A:
(A).
central nervous system