Which organelles are involved in membrane flow? Trace the route of a single integral membrane protein from formation to incorporation into the plasma membrane
What will be an ideal response?
With the exception of mitochondria, all membranous organelles are involved in membrane flow. Those most directly associated are the ER, Golgi apparatus, secretory vesicles, and plasma membrane. A membrane protein would be synthesized in the RER, then flow through the cisternae to a transport vesicle. There the protein will be moved to the cis face of the Golgi apparatus, where it will slowly travel upward toward the trans face, usually becoming modified along the way. Once reaching the cis face of the Golgi apparatus, the protein would be embedded in the membrane of a secretory vesicle and transported to the plasma membrane. There the vesicle will fuse with the membrane, inserting the protein in the cell membrane.
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Fill in the blank(s) with the appropriate word(s).
Which type of immunity defends against any type of invader?
a) Nonspecific b) Specific c) Cell mediated d) Antibody mediated immunity e) None of these choices
Which of the following was able to detect pressure?
A) olfactory receptor B) Pacinian corpuscle C) free nerve ending D) the Pacinian corpuscle and the free nerve ending
The spinal nerves exit the vertebral column by passing through the intervertebral foramen. What part of each vertebra is notched to form the intervertebral foramen?
A) lamina B) pedicle C) body D) transverse process