QUESTION 20 Which of the following does NOT function as a second messenger in cell signaling pathways? OA cholesterol OB. CAMP OC-IP3 OD. Calcium ions (Ca2+) QUESTION 21 In the insulin-signaling cascade, PTEN removes a phosphate group from the membrane lipid PIP3 to form PIP2. What type of enzyme is PTEN? OA. Polymerase OB. Phosphatase OC.Kinase OD. Lipase O E. Ligase

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Stress

Stress is defined as the feeling of being overwhelmed or unable to cope with emotional or mental pressure. Any event or action that makes a person annoyed, furious, or nervous can trigger it. Chemical changes in the body caused by stress can cause blood pressure, blood sugar levels, and heart rate to rise.