Which statement most accurately describes the interactions among ER, ribosomes, and Golgi bodies in exporting protein from the cell?
A) ER manufactures proteins, which are carried by ribosomes to the Golgi bodies for export.
B) Golgi bodies manufacture proteins, which travel through the ER to be packaged by the ribosomes for export.
C) Ribosomes make proteins that travel through the Golgi bodies to the ER, which exports them.
D) Ribosomes manufacture proteins, which travel through the ER and are packaged by the Golgi bodies for export.
E) ER manufactures proteins, which are carried by the Golgi bodies to the ribosomes for export.
D
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Which is NOT an effect of the hormonal products of the adrenal medulla?
A. accelerate heartbeat B. stimulate synthesis of glycogen C. increase blood pressure D. reduce blood flow to the skin and digestive organs E. increase blood sugar
Pain is
a. detected by certain free nerve endings. b. the perception of tissue injury. c. dependent on interpretation by the brain. d. the perception of injury and dependent on interpretation by the brain. e. all of these.
In the presence of glucose, where is the lac repressor bound?
A) lacZ B) lacO C) lacP D) lacI E) The lac repressor is not bound to the operon.
Which of type of information is not communicated by proprioceptors?
A. Limb movement B. Muscle temperature C. Muscle contraction D. Muscle stretch E. Muscle position