Lesson 7 Assignment - Biology 30 Module 1 Lesson 7 1...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Biology 30: Module 1: Lesson 7 Assignment 1 Answer: MODULE 1: LESSON 7 ASSIGNMENT This Module 1: Lesson 7 Assignment is worth 29 marks. The value of each assignment and each question is stated in the left margin. (29 marks) Lesson 7 Assignment—The Nerve Impulse—Transporting the Message You have a choice between doing Part 1—Action Potential OR Part 2—Action Potential. Both parts are worth 12 marks. Part 3—Reflect and Connect is not optional; you must do this part for 17 marks. (12 marks) Part 1—Action Potential View the graph. In the appropriate spaces below the graph, name the four phases indicated by the numbers on the graph. Then, explain in detail what is happening in each phase. The correct labels are worth 1 mark each, and the correct explanations are worth 2 marks each for each of the four phases. Inquiry into Biology (Whitby, ON: McGraw-Hill Ryerson, 2007), BLM 11.1.10A. Reproduced by permission. Phase 1 Name: Resting Potential Phase 1 Explanation: No nerve impulses have been transmitted. The resting potential provides energy for the generation of an incoming nerve impulse. The inside of the neuron is negative, compared to the outside which is positive. The potential difference of the membrane is -70mv.
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Biology 30: Module 1: Lesson 7 Assignment 2 Answer: Phase 2 Name: Depolarization Phase 2 Explanation: In deporlarization, potassium ion channels are closed, and voltage-gated sodium channels open to make the membrane permeable to sodium ions. Positively charged sodium goes into the axon to make the inside of the axon positive around 40mv. Phase 3 Name: Repolarization Phase 3 Explanation: The sodium ion channels close and positive membrane potential makes the potassium channels open. Potassium ions go out of the neuron and carry
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern