Question: QUESTION 11 1.5 Points Which Is True About Ion Concentrations Across The Cell Membrane? O A Naand Are Interchangeable, They Both Have The Same Functions In The Cell OB.thek Concentration Is Higher Inside The Cell And The Nat Concentration Is Higher Outside The Cell C. Na And K Concentrations Are The Same Inside And Outside The Cell OD. The Nat And It …

QUESTION 11 1.5 points Which is true about ion concentrations across the cell membrane? O A Naand are interchangeable, they both have the same functions in the cell OB.thek concentration is higher inside the cell and the Nat concentration is higher outside the cell C. Na and K concentrations are the same inside and outside the cell OD. the Nat and it concentrations are higher outside the cell than inside E the concentration is higher outside the cell and the Nat concentration is higher inside the cell QUESTION 12 1.5 points The part of a neuron that carries nerve impulses away from the cell body toward a post-synaptic cell is called (pointed to in above figure) Status: The part of a neuron that carries nerve impulses away from the cell body toward a postsynaptic cellis called (pointed to in above figure) A. an axon B. a dendrite C. a nerve D. a neurotransmitter QUESTION 14 1.5 points in a pre-synaptic cell, release of neurotransmitter at the axon terminus by exocytosis of neurotransmitter-filled vesicles is dependent on… OA voltage gated ca” channels opening B. binding of neurotransmitter to receptors C. the actions of acetylcholinesterase OD. closing of Clion channels in the presynaptic cell E all of the above. QUESTION 15 1.5 points A chemical synapse O A. has a presynaptic and postsynaptic neuron with membranes that are directly connected B. uses channels formed by proteins called connexons c. has a presynaptic and postsynaptic neuron coupled by a gap junction OD. contains nodes of Ranvier O E. uses neurotransmitters in the synaptic cleft QUESTION 16 1.5 points What type of ion channels convert the chemical signal back to an electrical signal in the post-synaptic cell? O A. Ligand-gated K channels. OB. Voltage-gated Ca2+ channels. OC Voltage-gated K channels. OD. Ligand-gated Nat channels. O E. Voltage-gated Na+ channels. QUESTION 17 1. 2. 3. 1.5 points membrane potential im time malisecondo puhe of electric current Where in the action potential timeframe would you expect to find sodium channels OPEN? timecond pulse of electric current Where in the action potential timeframe would you expect to find sodium channels OPEN? O A. 2 and 3 OB. 1 and 4 OC. 2 0.3 O E 4 Seconds Question Completion Status: QUESTION 18 1. 2. 15 points membrane potential time (millisecondo Dule of electric current Where in the action potential timeframe would you expect to find sodium channels CLOSED? pletion Status: pube of electric current Where in the action potential timeframe would you expect to find sodium channels CLOSED? O A 2 and 3 B. 1 and 4 OC. 2 OD.3 O E 4 QUESTION 19 1.5 points bond The process labeled “1” in the above diagram represents which of the following? O A. Hydrolysis OB. Anabolism OC. A gain in free energy OD. Dehydration synthesis