Most commonly, a synapse is made between a
A. presynaptic neuron's dendrite and a postsynaptic membrane's cell body.
B. presynaptic neuron's axon and a postsynaptic neuron's dendrite.
C. presynaptic neuron's axon hillock and a postsynaptic neuron's cell body.
D. presynaptic neuron's soma and a postsynaptic neuron's synaptic knob.
B
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The component of the plasma membrane that acts as a selective barrier to diffusion of polar molecules is the integral proteins.
Answer the following statement true (T) or false (F)
Which statement concerning transmembrane proteins in the plasma membrane is false?
A. They extend all the way through the plasma membrane. B. Some have carbohydrate chains and help form the glycocalyx. C. They are more abundant than the phospholipids. D. They may serve as channels that allow certain solutes to enter and leave the cell. E. They may be carriers that transport substances from one side of the plasma membrane to the other.
Which would be the route taken by lymph traveling from lymphatic vessels in the right leg to the bloodstream?
A. Right lumbar trunk - cisterna chyli - thoracic duct - right subclavian vein B. Right lumbar trunk - cisterna chyli - thoracic duct - left subclavian vein C. Right lumbar trunk - right intestinal trunk - right lymphatic duct - right subclavian vein D. Right femoral trunk - right lumbar trunk - right lymphatic duct - superior vena cava E. Right femoral trunk - cisterna chyli - thoracic duct - left subclavian vein
The period of time when bone remodeling is most likely is
A) during embryologic development. B) never. C) after injury. D) during aging. E) during youth.