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Portage Learning / BIOD 102 /Biology II Module 3 Exam
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Attempt Time Score LATEST Attempt 1 67 minutes 100 out of 100 Score for this quiz: 100 out of 100 Submitted Jul 19 at 4pm This attempt took 67 minutes.
Identify each neuron type based on its role:
True or False. The resting membrane potential of neuron is - 70mV. False Question 5 2 /^2 pts Multiple Choice: Electrical potential within a neuron is maintained by the opening and closing of: GPCR RTK The charge inside the neuron is relative to the outside which is . positive; negative Coorrrecctt! (^) negative; positive equal Coorrrecctt! Coorrrecctt! Question 4 3 /^3 pts ion channels True
Multiple Choice: Neurotransmitters released from the pre-synaptic cell bind to receptors of the post synaptic cell. voltage gated ion gated synaptic cleft Question 12 2 /^2 pts Coorrrecctt! (^) Rising phase Coorrrecctt! (^) Falling phase Coorrrecctt! (^) Undershoot inside of cell more negati Coorrrecctt! Fill in the blank. Excitatory post synaptic potentials result from 1 ion influx while inhibitory post synaptic potentials result from the influx of 2 ions. Your Answer:
Question 14 3 /^3 pts
Your Answer:
Question 17 2 /^2 pts a. ATP hydrolysis b. ADP hydrolysis c. release^ of ADP^ and^ Pi a b No answer text provided. Question 18 3 /^3 pts 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. anaerobic; aerobic aerobic; fermentation Coorrrecctt! Coorrrecctt! Multiple Choice: Energy to drive the power stroke movement during muscle contraction is provided by: aerobic; anaerobic c
Fill in the blank. Sustained contraction after death, resulting from prolonged cross bridge formation is called. Your Answer: rigormortis rigor mortis Question 20 3 /^3 pts Fill in the blank. has a role in blocking the myosin binding sites on actin molecules. Your Answer: tropmyosin Tropomyosin Question 21 3 /^3 pts Multiple Choice: A single motor neuron and all the muscle fibers it controls is: functional unit (^) 10/ Question 19 2 /^2 pts
Question 24 2 /^2 pts (short answer) What enzyme removes acetylcholine from the synaptic cleft? Your Answer: acetylcholineesterase is the enzyme that degrades Ach after it has been released at the synaptic terminal of the presynaptic cell. acetylcholinesterase Question 25 2 /^2 pts Coorrrecctt! (^5) Coorrrecctt! (^6) Coorrrecctt! (^7) Fill in the blank. Tension within a muscle is progressively increased by stimulating more muscle fibers (as if needing to increase force of contraction to hold increasing amounts of weight) through a process called. Calcium binds troponin, e troponin blocks myosin b Calcium ions actively tra Power stroke
Question 26 3 /^3 pts Multiple Choice: Increasing the rate of action potentials applied to a motor unit is called: twitch recruitment tetanus Question 27 2 /^2 pts Your Answer: recruitment recruitment Coorrrecctt! Multiple Choice: Which of the following would be considered reaching the maximum potential of a muscle contraction? summation Coorrrecctt! (^) tetanus recruitment 13/ summation
Multiple Choice: Electrical impulses reach the and then the. Coorrrecctt! (^) SA node; AV node AV node; SA node ventricle; atria Put the events in order as they pertain to electrical impulse conduction in the heart. Coorrrecctt! (^1) Coorrrecctt! (^2) delay at AV-node Coorrrecctt! (^3) Coorrrecctt! (^4) spread throughout ventr 15/ Question 31 4 /^4 pts Multiple Choice: If cardiac output was low, what would you expect to be happening? Question 32 3 /^3 pts Bundle branches pass to SA node and spreading th
Multiple Choice: Which valves shut during ventricular contraction? semilunar valves aorta Question 34 2 /^2 pts Fill in the blank. In cardiac muscle, AcH binds to a , and the result is decreased heart rate. Your Answer: G-protein-coupled receptros GCPR increased heart rate Coorrrecctt! (^) decreased heart rate increased stroke volume Coorrrecctt! Question 33 2 /^2 pts AV valves
The purpose is to bring the head closer to the heart to protect brain tissue and drease any type of cellular damage. This is done because lop bp is sensed. When this happens skeletal muscle relaxes. To change your body position so that the head is closer to the heart; it helps blood reach the brain more effectively. Quiz Score: 100 out of 100
