Exam 1 Ver A KEY Fa 23

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Biology

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Dec 6, 2023

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BIOL 3103, Fall 2023, Exam 1 Version A Name __________________________ OU ID __________________________ Circle answers on the exam in addition to filling in the Scantron sheet. Affirmation of academic integrity : "On my honor, I affirm that I have neither given nor received inappropriate aid in the completion of this exercise." Name: Date: ****FILL IN YOUR VERSION LETTER UNDER KEY ID IN THE TOP LEFT CORNER OF YOUR SCANTRON **** Equations and constants are at the end of the exam 1. Based on Bergman’s rule, which of these is true about animal size and climate? a. In a warm climate, animals of the same species will be bigger than those in a cold climate b. In a warm climate, animals of the same species will be smaller than those in a cold climate 2. Which of these are you least likely to find as part of a cell membrane? a. Phospholipids b. Nucleic acids c. Proteins 3. Which organism is likely to have the highest mass-specific metabolic rate? a. Elephant (3000 kg) b. Blue whale (175,000 kg) c. Shrew (7g) 4. What type of biomolecule is used on the surface of a cell as a cell type identifier? a. lipid b. carbohydrate c. nucleic acid d. protein 5. In a parasympathetic dominant state, lung bronchioles will a. Constrict b. Dilate 6. In a sympathetic dominant state, pupils will a. Constrict b. Dilate 7. If an animal is relaxed, which neurotransmitter will it most likely be using more of? a. Acetylcholine b. Cortisol c. Norepinephrine 8. Where there were two synapses, there is now one. What has most likely occurred?

BIOL 3103, Fall 2023, Exam 1 Version A Name __________________________ OU ID __________________________ a. Long term potentiation (sensitization) b. Long term depression (habituation) c. Short term depression (habituation) d. Short term potentiation (sensitization) 9. Which part of the cerebellum plans voluntary movements? a. Cerebrocerebellum b. Spinocerebellum c. Vestibulocerebellum 10. If there are (1) equal concentrations of total solutes (permeable + impermeable) inside and outside the cell, (2) there are more permeable solutes inside the cell than outside which of the following will happen? a. Permeable ions will move into the cell & water will move into the cell b. Permeable ions will move out of the cell & water will move into the cell c. Permeable ions will move out of the cell & water will move out of the cell d. Permeable ions will move into the cell & water will move out of the cell e. There will be no net movement of molecules/ions 11. If a synapse needed to be able to amplify the post-synaptic response, which kind would be best? a. Electrical synapse b. Chemical synapse 12. Which of these receptors does NOT have both a slow and a fast subtype? a. GABA b. Glutamate c. Acetylcholine 13. Which of these molecules is NOT involved in priming and/or docking the vesicle for release? a. MUNC-18 b. Dynamin c. Syntaxin 14. Which of these molecules acts as an ion sensor for vesicle release? a. Synaptotagmin b. Synaptobrevin c. Syntaxin 15. If a cell membrane has a V EQ for K + that is -110mV (measured inside the cell), then which one of the following statements is most likely true?

BIOL 3103, Fall 2023, Exam 1 Version A Name __________________________ OU ID __________________________ a. There is a higher concentration of K + inside the cell than outside the cell than is typical b. There is a higher concentration of K + outside the cell than inside the cell than is typical c. There are equal amounts of K + and Na + on both sides of the cell membrane. 16. Which phase of the action potential is a positive feedback loop? a. Relative refractory period b. Rising phase c. Falling phase 17. In a neuron, opening 100 times more Cl- channels than either Na+ or K+ channels would a. Make an action potential more likely to occur b. Make an action potential less likely to occur 18. Which of these does NOT involve amplification? a. G-protein coupled receptors b. Protein kinase signalling c. Ligand gated receptors 19. At which voltage (potential) would the driving force for potassium (K+) be largest? a. -150 mV b. -90 mV c. +30 mV 20. A body area with low motor dexterity (control) will have a _____ representation in the cortex than an area of low acuity a. Larger b. Smaller For questions 21-23, match the following structures to their function 21. Sensory-motor relay center C 22. Homeostatic regulator B 23. Selects appropriate voluntary movements & suppresses incorrect movements E a. Limbic system b. Hypothalamus c. Thalamus d. Cortex e. Basal ganglia 24. Which kind of glia is most involved in action potential conduction? a. Microglia b. Astrocytes c. Ependymal cells

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