Which of the following processes does not involved in the signal propagation at a chemical synapse?<br/>16. (Part 06, medium) 105-Mid A: synaptic vesicles release neurotransmitters in the presynaptic terminal. B: neurotransmitters diffuse across the synaptic clef. C: Postsynaptic receptors are activated by the neurotransmitters. D: Vesicles transport neurotransmitters from the synaptic terminals to the soma in the postsynaptic side.

A lysosome is a membrane-bound organelle found in nearly all animal cells. They are spherical vesicles which contain hydrolytic enzymes that can break down many kinds of biomolecules.

_______-coated vesicles are involved in transporting molecules from<br/>the plasma membrane on the inward endocytic pathway. () A: COPⅠ B: COPⅡ C: Clathrin D: Sar 1

_______-coated vesicles<br/>are involved in transporting molecules from the plasma membrane on<br/>the inward endocytic pathway. () A: COPⅠ B: COPⅡ C: Clathrin D: Sar 1

If ER soluble proteins with the KDEL sequence at the C-terminus, escaped to Golgi apparatus, their corresponding receptor in COPII-coated vesicles acts mainly to retrieve the proteins back to ER through vesicle transport.

The reason for rapid conduction of impulses along myelinated nerve fibers is that they have( ) A: long axons B: thick axons C: many synaptic vesicles in the axons D: clefts of Schmidt and Lantermann E: nodes of Ranvie

Which is the<br/>characteristic of atopic dermatitis in infancy<br/>__ __? A: The lesions are<br/>limited to the popliteal fossa and elbow fossa B: The main lesion is<br/>lichenification C: Lesions are more<br/>common on the face D: Mainly vesicles and<br/>pustules

Which of the following is incorrect regarding serous gonadal vesicles: A: The top of the cytoplasm contains eosinophilic secretory granules B: The basal cytoplasm is strongly basophilic C: The nucleus is oblate at the base of the cell D: At the base of the cell are a large number of parallel thick endoplasmic reticulum and mitochondria E: More ribosomes