Of the following species of mycobacterium, which causes a chronic disease of the skin, mucous membranes, and nerve tissue and has not yet been cultivated in vitro?
A. Mycobacterium paratuberculosis
B. Mycobacterium lepraemurium
C. Mycobacterium phlei
D. Mycobacterium leprae
Ans: D. Mycobacterium leprae
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Bicoid protein is a transcription factor that promotes transcription of the hunchback gene. This is an example of:
A. translational control of gene expression during development. B. translational control of development. C. hierarchical control of gene regulation during development. D. maternal developmental effect. E. oocyte polarization.
he route that most accurately describes secretory protein movement through the endomembrane system would be
A. Golgi apparatus?smooth endoplasmic reticulum ?lysosome?vesicles?plasma membrane B. plasmid?plasma membrane?nuclear envelope?smooth endoplasmic reticulum?vesicles C. nuclear envelope?vesicles?Golgi apparatus?rough endoplasmic reticulum?plasma membrane D. lysosomes?rough endoplasmic reticulum?smooth endoplasmic reticulum?vesicles?plasma membrane E. rough endoplasmic reticulum?vesicles? Golgi apparatus?vesicles ?plasma membrane
Ultraviolet signals in swordtail fishes and electrical signals in weakly electrical fishes are examples of
____ communication.
a. network b. private channel c. sensory drive d. overheard e. sensory overdrive
In striated muscle contraction, the Ca2+-ATPase pump
A) releases Ca2+ from the T tubule. B) secretes Ca2+ from the axon terminal. C) is voltage-gated. D) decreases Ca2+ in the sarcoplasm. E) increases Ca2+ binding to TnC.