SHORT ANSWER Answer the questions in the space provided. 1. What happens to the movement of molecules at equilibrium? 2. How do carrier proteins transport substances across cell membranes? 3. What types of stimuli can cause the gates on ion channels to open or close? 4. Critical Thinking How does the interaction between a carrier protein and the substance it transports resemble the interaction between an enzyme and its substrate? STRUCTURES AND FUNCTIONS The drawings below show the appearance of a red blood cell and a plant cell in isotonic, hypotonic, and hypertonic environments. Label each environment in the spaces provided. SECTION 5-2 REVIEW ACTIVE TRANSPORT VOCABULARY REVIEW Define the following terms. 1. active transport 2. endocytosis 3. vesicle
SHORT ANSWER Answer the questions in the space provided. 1. What happens to the movement of molecules at equilibrium? 2. How do carrier proteins transport substances across cell membranes? 3. What types of stimuli can cause the gates on ion channels to open or close? 4. Critical Thinking How does the interaction between a carrier protein and the substance it transports resemble the interaction between an enzyme and its substrate? STRUCTURES AND FUNCTIONS The drawings below show the appearance of a red blood cell and a plant cell in isotonic, hypotonic, and hypertonic environments. Label each environment in the spaces provided. SECTION 5-2 REVIEW ACTIVE TRANSPORT VOCABULARY REVIEW Define the following terms. 1. active transport 2. endocytosis 3. vesicle
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