________ is the process whereby leukocytes move across the endothelial layer and through the blood vessel wall.
A) Diapedesis
B) Chemotaxis
C) Internalization
D) Margination
E) Attachment
Answer: A) Diapedesis
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Nucleotides have a phosphate group attached at the ___ carbon atom of the sugar.
A. 2' B. 3' C. 5' D. 1'
The initial product of transcription is referred to as the ____ transcript
What's the answer for this one?
Endogenous infections are caused by
A) normal biota in an unusual site. B) infection by indigenous biota in a healthy individual. C) parasitic flora that have been ingested into the gut. D) viral invasion
Which of the following statements concerning transcription in bacteria is FALSE?
A) It occurs in the nucleoid region. B) Sigma factors are parts of RNA polymerase that recognize promoter regions. C) Different RNA polymerases are required for synthesis of mRNA, rRNA, and tRNA. D) Termination is either self-induced or due to the presence of Rho protein. E) There are a variety of sigma factors that affect transcription.