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【单选题】
Which of the following belongs to low uncertainty avoidance?A.
People develop many rules to control social behaviors.
B.
People tend to worry about the future.
C.
People have a high level of anxiety.
D.
People believe in accepting dissent among cultural members
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【判断题】Acquired color amblyopia happens when the responsiveness of the rod cell is weakened.
A.
正确
B.
错误
【简答题】Cell phones are common in our lives and have become______．
【简答题】阅读理解。 Cell phones are all around us. We use cell phones to call our friends, send text messages, play s, and even take photographs. Now imagine using your cell phone to call your air conditioner. ...
【多选题】Why is a rod photoreceptor cell from the retina exquisitely sensitive to light?
A.
The light-absorbing rhodopsin proteins are embedded in many pancake-shaped vesicles (discs) of membrane inside the outer segment of the photoreceptor cell.
B.
When the rod cell is stimulated by light, a signal is relayed from the rhodopsin molecules in the discs, through the cytosol, to ion channels that allow positive ions to flow through the plasma membrane of the outer segment.
C.
These cation channels close in response to the cytosolic signal, producing a change in the membrane potential of the rod cell.
D.
By mechanisms similar to those that control neurotransmitter release in ordinary nerve cells, the change in membrane potential alters the rate of neurotransmitter release from the synaptic region of the cell. Released neurotransmitters then act on retinal nerve cells that pass the signal on to the brain.
【简答题】阅读理解。 Cell phones (移动电话) are all around us. We use cell phones to call our friends, send text messages, play s, and even take photographs. Now imagine using your cell phone to call your air condit...
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