Neutrophils are inhibited from gathering at the site of infection by Mycobacterium tuberculosis by what virulence factor of the pathogen?
A) mycolic acid
B) cord factor
C) kinase
D) the capsule
E) hemolysin
B
Bloom's Taxonomy: Comprehension
Section: Bacterial Diseases of the Lower Respiratory System
Learning Outcome: 22.16
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In most cases, cancer-causing mutations ____
a. accumulate over a number of years b. accumulate very quickly within a single cell c. metastasize within a short time d. must all occur on the q arm of a chromosome e. occur during the G0 phase of the cell cycle
A slower than normal heart rate is called
a. tachycardia. b. bradycardia. c. hypocardia. d. hypercardia. e. hypothermia.
Helix-turn-helix and zinc fingers are secondary structural motifs in DNA and RNA, respectively.
Answer the following statement true (T) or false (F)
When a triplet of bases in the coding sequence of DNA is "GCA," the corresponding codon for the mRNA that is transcribed from it is:
a. CGU. b. CGT. c. GCA. d. TGC. e. UGC.