hagopayvazian

While on a visit to Minnesota (Land of 10000 Lakes), you sign up to take an excursion around one of the larger lakes. When you go to the dock where the 1500kg boat is tied, you find that the boat is bobbing up and down in the waves, executing simple harmonic motion with amplitude 20cm. The boat takes 3.5s to make one complete up-and-down cycle. When the boat is at its highest point, its deck is at the same height as the stationary deck. As you watch the boat bob up and down, you (mass 60kg) begin to feel a bit woozy, due in part to the previous night's dinner of lutefisk. As a result, you refuse to board the boat unless the level of the boat's deck is within 10cm of the deck level. How much time do you have to board the boat comfortably during each cycle of the up-and-down motion?

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Please read the steps listed below. Choose the answer (A, B, C,D, or E) that is the correct sequence for transmission at achemical synapse

1. neurotransmitter binds with a receptor

2. calcium ions rush into neuron's cytoplasm

3. action potential depolarizes the presynaptic membrane

4. ion channel opens to allow particular ion to enterpostsynaptic cell

5. secretory vesicles release neurotransmitter into the synapticcleft

A) 1,2,3,4,5,

B) 2,3,5,4,1

C) 3,2,5,1,4

D) 4,3,1,2,5

E) 5,1,2,4,3

Arrange the events that occur during synaptic transmission. Use letters A-F to denote the correct sequence. Use the diagram below as a clue.

Example: 

              B 1. Ion channel opens

10.

1. Ion channel opens.       A   B   E   F   D   C   2. Neurotransmitter is released into synaptic cleft.   A   B   E   F   D   C   3. Vesicle fuses with plasma membrane.   A   B   E   F   D   C   4. Neurotransmitter binds to receptor.   A   B   E   F   D   C   5. Action potential arrives.   A   B   E   F   D   C   6. Ion channel closes.

Which of the following statements describe the incubation period of an infectious disease?

a. The time between exposure to the disease and the presence of symptoms

b. The time between the first sign of the disease and the end of the illness

c. The time between the exposure of the disease to the end of the illness

d. The time it takes to grow a culture of the pathogen in the laboratory