Which of the following is NOT a mechanism by which antibodies can protect the body from foreign
antigens?
a. neutralization
b. agglutination
c. stimulation of cytotoxic T cells
d. enhancing of phagocytosis
e. activation of complement
C
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During which cellular process do all three forms of RNA associate?
A. ribosome assembly B. chromatin formation C. formation of the nucleolus D. protein synthesis
The most obvious characteristic of annelids is the repeated segments that make up their bodies. They also have a complete digestive system, and a coelom. Which of the following is true of an annelid?
A. They have cephalization and an open circulatory system. B. Their gut is separated from their body wall. C. They have cephalization. D. Their gut is separated from their body wall and they have cephalization. E. They have an open circulatory system.
With regards to operons, which of the following is incorrect?
A. operons have a promoter that contains an operator B. are typically controlled by a regulatory gene that is located far from the actual operon C. results in several different RNA molecules each leading to the protein specified by each gene segment in the operon D. may be turned on or off E. may be repressible or inducible
What is a transmembrane protein?
What will be an ideal response?