a rise in concentration in ______________ in the cytoplasm of an axon directly causes the synaptic...
Homework Answers
Calcium ions
The process by which vesicles inside the cell fuse with the cell membrane and release their contents into the synaptic cleft is called exocytosis. There are probably specific neurotransmitter release sites along the presynaptic membrane of the endfoot. The influx of calcium ions in some ways activates these sites, causing the membrane of a vesicle to fuse with the presynaptic membrane, opening the vesicle and spilling its contents into the synaptic cleft.
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rise in concentration in ______________ in the cytoplasm of an axon
directly causes the synaptic...
Multiple Choice Electrical signals reaching the axon terminal causes A) Exocytosis of neurotransmitters into synaptic cleft...
Multiple Choice Electrical signals reaching the axon terminal causes A) Exocytosis of neurotransmitters into synaptic cleft B) Opening of ligand gated Ca channels C) IPSP or EPSP at axon terminal D) Release of neurotransmitter
35. At the relative end of synaptic transmission, the vesicles (containing stored neurotransmitter) migrate and fuse...
35. At the relative end of synaptic transmission, the vesicles (containing stored neurotransmitter) migrate and fuse with the pre-synaptic membrane. Which of the processes/steps below causes this vesicle-migration and fusion? a. the calcium current at the axon-terminal b. the graded potential at the dendrites c. the peak of the action potential amplitude d. the potassium current that causes repolarization
How is the concentration of electrolyte charges measured? a. In millijoules b. By mass c. By...
How is the concentration of electrolyte charges measured? a. In millijoules b. By mass c. By amperes d. By weight e. In milliequivalents 12. What organ retains or releases body fluids, thereby regulating blood volume and blood pressure? a. Liver b. Kidneys c. Bladder d. Pancreas e. Heart 13. If fluid is lost by vomiting or diarrhea, what mineral is lost in greatest quantity? a. Chloride b. Calcium c. Phosphate d. Potassium e. Sodium 14. Of the following minerals, which...
Put these steps in neuromuscular junction synaptic transmission and excitation-contraction coupling in chronological order. A. Ryanodine...
Put these steps in neuromuscular junction synaptic transmission and excitation-contraction coupling in chronological order. A. Ryanodine receptors open B. Voltage-gated Na+ channels open in the muscle cell membrane near the neuromuscular junction C. Tropomyosin rotates into the groove of the thin filament (out of the way of the myosin binding site) D. Depolarization of motoneuron axon terminal E. Ca2+ dissociates from troponin F. [Ca2+] rises in the muscle cell cytoplasm G. An EPSP occurs in the muscle cell H. Myosin...
1) Which ONE of the following aqueous solutions contains the lowest concentration of cations, assuming 100%...
1) Which ONE of the following aqueous solutions contains the lowest concentration of cations, assuming 100% dissolution and ionization? (A) 0.5 M sodium phosphate (B) 1.0 M potassium nitrate (C) 2.0 M magnesium sulfate (D) 0.75 M calcium chloride (E) 1.5 M hydrogen chloride 2) The highest mass of SnS will dissolve in 1.0 L of an aqueous solution of: (A) 0.1 M MgS (B) 0.1 M (NH4)2S (C) 0.1 M Sn(NO3)2 (D) 0.1 M Na2S (E) 0.1 M CaCl2
Choose any of the reactions below that would form a precipitate. (select all that apply) a.Silver...
Choose any of the reactions below that would form a precipitate. (select all that apply) a.Silver Nitrate reacting with Sodium Chloride b. Hydrochloric Acid reacting with iron metal c. iron(III)nitrate reacting with potassium hydroxide d. calcium chloride reacting with sodium phosphate e. Potassium Nitrate reacting with Lithium Chloride
Calcium ions move out of the cell against a concentration gradient. What drives this active transport?...
Calcium ions move out of the cell against a concentration gradient. What drives this active transport? a) vesicles fusing with the membrane b) receptor-mediated exocytosis c) diffusion d) hydrolysis of ATP
causes the sarcoplasmic retieatum of skeletal musele cells to release calcium onto the sarcomere: what he...
causes the sarcoplasmic retieatum of skeletal musele cells to release calcium onto the sarcomere: what he movement of tropomyosin off of the binding site of actin the binding of acetyleholine with its receptor the binding of caleium with troponin he movement of the action potential down the T-tubal the binding of ATP to the Ca-ATPase on the sarcoplasmic reticulum "Rigor Mortis" is caused b a. the inability of the myosin head to detach from actin b. a lack of calcium...
Name Period__Date ProAP Chemistry Homework #45 For each of the following: A Write a balanced molecular...
Name Period__Date ProAP Chemistry Homework #45 For each of the following: A Write a balanced molecular equation (including states) B. Write the complete ionic equation (including states) C. Write the net lonic equation (including states) 1. potassium chloride lead (II) nitrate calcium chloride + sodium carbonate 3. Iron (III) sulfate + lithium carbonate → iron (II) chloride + sodium sulfide - 5. ammonium phosphate + magnesium nitrate →
5. Which statement about the readily releasable pool of synaptic vesicles in incorrect? A. Its vesicles...
5. Which statement about the readily releasable pool of synaptic vesicles in incorrect? A. Its vesicles are released rapidly upon stimulation B. Its vesicles are docked and primed for release awaiting stimulation C. It constitutes the majority of vesicles in the synaptic terminal D. It is replenished with vesicles from the recycling pool under physiological conditions 6. Which statement(s) about the fovea is CORRECT? A. The fovea is located in the macula and responsible for central vision B. The fovea...
Multiple Choice Electrical signals reaching the axon terminal causes A) Exocytosis of neurotransmitters into synaptic cleft B) Opening of ligand gated Ca channels C) IPSP or EPSP at axon terminal D) Release of neurotransmitter
35. At the relative end of synaptic transmission, the vesicles (containing stored neurotransmitter) migrate and fuse with the pre-synaptic membrane. Which of the processes/steps below causes this vesicle-migration and fusion? a. the calcium current at the axon-terminal b. the graded potential at the dendrites c. the peak of the action potential amplitude d. the potassium current that causes repolarization
causes the sarcoplasmic retieatum of skeletal musele cells to release calcium onto the sarcomere: what he movement of tropomyosin off of the binding site of actin the binding of acetyleholine with its receptor the binding of caleium with troponin he movement of the action potential down the T-tubal the binding of ATP to the Ca-ATPase on the sarcoplasmic reticulum "Rigor Mortis" is caused b a. the inability of the myosin head to detach from actin b. a lack of calcium...
Name Period__Date ProAP Chemistry Homework #45 For each of the following: A Write a balanced molecular equation (including states) B. Write the complete ionic equation (including states) C. Write the net lonic equation (including states) 1. potassium chloride lead (II) nitrate calcium chloride + sodium carbonate 3. Iron (III) sulfate + lithium carbonate → iron (II) chloride + sodium sulfide - 5. ammonium phosphate + magnesium nitrate →
5. Which statement about the readily releasable pool of synaptic vesicles in incorrect? A. Its vesicles are released rapidly upon stimulation B. Its vesicles are docked and primed for release awaiting stimulation C. It constitutes the majority of vesicles in the synaptic terminal D. It is replenished with vesicles from the recycling pool under physiological conditions 6. Which statement(s) about the fovea is CORRECT? A. The fovea is located in the macula and responsible for central vision B. The fovea...
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