The signal recognition particle (SRP) functions in
A. binding to a newly translated protein and escorting it to the cell membrane, the cytoplasm, or the Golgi.
B. binding to a signal rRNA molecule and allowing it to exit the nucleus and associate with ribosomal proteins.
C. marking an organelle for destruction by lysosomes.
D. recognizing an ER signal sequence and binding to an SRP receptor in the ER.
E. determining the destination of a vesicle that buds from the Golgi.
Answer: D
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Paul Ehrlich discovered the first antibiotic.
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Fill in the blank(s) with the appropriate word(s).
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