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Portage Learning BIOD 102 Biology II Module 3 Exam Portage Learning BIOD 102 Biology II Module 3 Exam Portage Learning BIOD 102 Biology II Module 3 Exam
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Due No due date Points 100 Questions 37 Time Limit 120 Minutes Requires Respondus LockDown Browser
Attempt Time Score LATEST Attempt 1 67 minutes 100 out of 100
This attempt took 67 minutes.
Identify each neuron type based on its role:
Multiple Choice:
Coorrrecctt! Coorrrecctt!
True or False. The resting membrane potential of neuron is - 70mV. True False
Multiple Choice: Electrical potential within a neuron is maintained by the opening and closing of: GPCR ion channels RTK
(short answer) Describe the process of cellular depolarization. Your Answer: each stimulus incerases flow of na+ into cell then causes positive shift in the membrane, then an action potentional is formed. that one stimulus will cause depolarization that then reaches threshhold level. once threshhold is reached positive feedback loop is used and more sodium flows into teh cell which shifts membrane potential. Sodium channels open and sodium flows into the cell causing a more positive shift in membrane potential (+62mV), and an action potential is generated. Coorrrecctt!
Multiple Choice: Graded potentials that surpass the neuron’s result in a depolarization event. graded potential threshold shift
Match each phase with the correct definition. Correct! (^) Resting phase Correct! (^) Depolarization
potassium channels close Inside of the cell more ne Coorrrecctt!
Coorrrecctt! Coorrrecctt! Coorrrecctt! Coorrrecctt!
Multiple Choice: Neurotransmitters released from the pre-synaptic cell bind to receptors of the post synaptic cell. voltage gated ion gated ionotropic synaptic cleft
Multiple Choice: EPSP + EPSP + IPSP + IPSP + EPSP EPSP of postsynaptic cell. This principle is called. depolarization hyperpolarization summation
Fill in the blank. Neurotransmitter transport channels are present on the 1 , and inhibitory enzymes are present in the
Your Answer:
Coorrrecctt!
Coorrrecctt!
Multiple Choice: Energy to drive the power stroke movement during muscle contraction is provided by: a. ATP hydrolysis b. ADP hydrolysis c. release of ADP and Pi a b c No answer text provided.
Multiple Choice: The cell’s preferred use of energy is provided by respiration. After all stores have been exhausted, the cell will then use respiration to generate ATP. aerobic; anaerobic anaerobic; aerobic aerobic; fermentation
Fill in the blank. Sustained contraction after death, resulting from prolonged cross bridge formation is called. Your Answer: rigormortis rigor mortis
Fill in the blank. has a role in blocking the myosin binding sites on actin molecules. Your Answer: tropmyosin Tropomyosin
Multiple Choice: A single motor neuron and all the muscle fibers it controls is: functional unit
